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17.9125 8.46625C18.6138 9.23625 19.04 10.2125 19.04 11.4225C19.04 15.6437 16.4688 16.5787 14.0213 16.8537C14.42 17.1975 14.7638 17.8575 14.7638 18.8887C14.7638 20.36 14.75 21.5425 14.75 21.9137C14.75 22.2025 14.9563 22.5462 15.5063 22.4362C19.8513 20.9787 23 16.8537 23 12C23 5.9225 18.0775 1 12 1Z"></path> </svg> </a> <div class="flex-1 flex-order-2 text-right"> <a href="/login?return_to=https%3A%2F%2Fgithub.com%2Funifiedjs%2Funified" class="HeaderMenu-link HeaderMenu-button d-inline-flex d-lg-none flex-order-1 f5 no-underline border color-border-default rounded-2 px-2 py-1 color-fg-inherit js-prevent-focus-on-mobile-nav" data-hydro-click="{"event_type":"authentication.click","payload":{"location_in_page":"site header menu","repository_id":null,"auth_type":"SIGN_UP","originating_url":"https://github.com/unifiedjs/unified","user_id":null}}" data-hydro-click-hmac="d85483dc2a7f713f1310a0477344360077db82a531694d9fc7e5031896cdfd36" data-analytics-event="{"category":"Marketing nav","action":"click to Sign in","label":"ref_page:Marketing;ref_cta:Sign in;ref_loc:Header"}" > Sign in </a> </div> </div> <div class="HeaderMenu js-header-menu height-fit position-lg-relative d-lg-flex flex-column flex-auto top-0"> <div class="HeaderMenu-wrapper d-flex flex-column flex-self-start flex-lg-row flex-auto rounded rounded-lg-0"> <nav class="HeaderMenu-nav" aria-label="Global"> <ul class="d-lg-flex list-style-none"> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Product <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 pb-2 pb-lg-4 d-lg-flex flex-wrap dropdown-menu-wide"> <div class="HeaderMenu-column px-lg-4 border-lg-right mb-4 mb-lg-0 pr-lg-7"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"github_copilot","context":"product","tag":"link","label":"github_copilot_link_product_navbar"}" href="https://github.com/features/copilot"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-copilot color-fg-subtle mr-3"> <path d="M23.922 16.992c-.861 1.495-5.859 5.023-11.922 5.023-6.063 0-11.061-3.528-11.922-5.023A.641.641 0 0 1 0 16.736v-2.869a.841.841 0 0 1 .053-.22c.372-.935 1.347-2.292 2.605-2.656.167-.429.414-1.055.644-1.517a10.195 10.195 0 0 1-.052-1.086c0-1.331.282-2.499 1.132-3.368.397-.406.89-.717 1.474-.952 1.399-1.136 3.392-2.093 6.122-2.093 2.731 0 4.767.957 6.166 2.093.584.235 1.077.546 1.474.952.85.869 1.132 2.037 1.132 3.368 0 .368-.014.733-.052 1.086.23.462.477 1.088.644 1.517 1.258.364 2.233 1.721 2.605 2.656a.832.832 0 0 1 .053.22v2.869a.641.641 0 0 1-.078.256ZM12.172 11h-.344a4.323 4.323 0 0 1-.355.508C10.703 12.455 9.555 13 7.965 13c-1.725 0-2.989-.359-3.782-1.259a2.005 2.005 0 0 1-.085-.104L4 11.741v6.585c1.435.779 4.514 2.179 8 2.179 3.486 0 6.565-1.4 8-2.179v-6.585l-.098-.104s-.033.045-.085.104c-.793.9-2.057 1.259-3.782 1.259-1.59 0-2.738-.545-3.508-1.492a4.323 4.323 0 0 1-.355-.508h-.016.016Zm.641-2.935c.136 1.057.403 1.913.878 2.497.442.544 1.134.938 2.344.938 1.573 0 2.292-.337 2.657-.751.384-.435.558-1.15.558-2.361 0-1.14-.243-1.847-.705-2.319-.477-.488-1.319-.862-2.824-1.025-1.487-.161-2.192.138-2.533.529-.269.307-.437.808-.438 1.578v.021c0 .265.021.562.063.893Zm-1.626 0c.042-.331.063-.628.063-.894v-.02c-.001-.77-.169-1.271-.438-1.578-.341-.391-1.046-.69-2.533-.529-1.505.163-2.347.537-2.824 1.025-.462.472-.705 1.179-.705 2.319 0 1.211.175 1.926.558 2.361.365.414 1.084.751 2.657.751 1.21 0 1.902-.394 2.344-.938.475-.584.742-1.44.878-2.497Z"></path><path d="M14.5 14.25a1 1 0 0 1 1 1v2a1 1 0 0 1-2 0v-2a1 1 0 0 1 1-1Zm-5 0a1 1 0 0 1 1 1v2a1 1 0 0 1-2 0v-2a1 1 0 0 1 1-1Z"></path> </svg> <div> <div class="color-fg-default h4">GitHub Copilot</div> Write better code with AI </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" 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</a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"actions","context":"product","tag":"link","label":"actions_link_product_navbar"}" href="https://github.com/features/actions"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-workflow color-fg-subtle mr-3"> <path d="M1 3a2 2 0 0 1 2-2h6.5a2 2 0 0 1 2 2v6.5a2 2 0 0 1-2 2H7v4.063C7 16.355 7.644 17 8.438 17H12.5v-2.5a2 2 0 0 1 2-2H21a2 2 0 0 1 2 2V21a2 2 0 0 1-2 2h-6.5a2 2 0 0 1-2-2v-2.5H8.437A2.939 2.939 0 0 1 5.5 15.562V11.5H3a2 2 0 0 1-2-2Zm2-.5a.5.5 0 0 0-.5.5v6.5a.5.5 0 0 0 .5.5h6.5a.5.5 0 0 0 .5-.5V3a.5.5 0 0 0-.5-.5ZM14.5 14a.5.5 0 0 0-.5.5V21a.5.5 0 0 0 .5.5H21a.5.5 0 0 0 .5-.5v-6.5a.5.5 0 0 0-.5-.5Z"></path> </svg> <div> <div class="color-fg-default h4">Actions</div> Automate any 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0-.25-.25Z"></path><path d="M10 17.75a.75.75 0 0 1 .75-.75h6.5a.75.75 0 0 1 0 1.5h-6.5a.75.75 0 0 1-.75-.75Zm-4 0a.75.75 0 0 1 .75-.75h.5a.75.75 0 0 1 0 1.5h-.5a.75.75 0 0 1-.75-.75Z"></path> </svg> <div> <div class="color-fg-default h4">Codespaces</div> Instant dev environments </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"issues","context":"product","tag":"link","label":"issues_link_product_navbar"}" href="https://github.com/features/issues"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-issue-opened color-fg-subtle mr-3"> <path d="M12 1c6.075 0 11 4.925 11 11s-4.925 11-11 11S1 18.075 1 12 5.925 1 12 1ZM2.5 12a9.5 9.5 0 0 0 9.5 9.5 9.5 9.5 0 0 0 9.5-9.5A9.5 9.5 0 0 0 12 2.5 9.5 9.5 0 0 0 2.5 12Zm9.5 2a2 2 0 1 1-.001-3.999A2 2 0 0 1 12 14Z"></path> </svg> <div> <div class="color-fg-default h4">Issues</div> Plan and track work </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"code_review","context":"product","tag":"link","label":"code_review_link_product_navbar"}" href="https://github.com/features/code-review"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-code-review color-fg-subtle mr-3"> <path d="M10.3 6.74a.75.75 0 0 1-.04 1.06l-2.908 2.7 2.908 2.7a.75.75 0 1 1-1.02 1.1l-3.5-3.25a.75.75 0 0 1 0-1.1l3.5-3.25a.75.75 0 0 1 1.06.04Zm3.44 1.06a.75.75 0 1 1 1.02-1.1l3.5 3.25a.75.75 0 0 1 0 1.1l-3.5 3.25a.75.75 0 1 1-1.02-1.1l2.908-2.7-2.908-2.7Z"></path><path d="M1.5 4.25c0-.966.784-1.75 1.75-1.75h17.5c.966 0 1.75.784 1.75 1.75v12.5a1.75 1.75 0 0 1-1.75 1.75h-9.69l-3.573 3.573A1.458 1.458 0 0 1 5 21.043V18.5H3.25a1.75 1.75 0 0 1-1.75-1.75ZM3.25 4a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h2.5a.75.75 0 0 1 .75.75v3.19l3.72-3.72a.749.749 0 0 1 .53-.22h10a.25.25 0 0 0 .25-.25V4.25a.25.25 0 0 0-.25-.25Z"></path> </svg> <div> <div class="color-fg-default h4">Code Review</div> Manage code changes </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"discussions","context":"product","tag":"link","label":"discussions_link_product_navbar"}" href="https://github.com/features/discussions"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-comment-discussion color-fg-subtle mr-3"> <path d="M1.75 1h12.5c.966 0 1.75.784 1.75 1.75v9.5A1.75 1.75 0 0 1 14.25 14H8.061l-2.574 2.573A1.458 1.458 0 0 1 3 15.543V14H1.75A1.75 1.75 0 0 1 0 12.25v-9.5C0 1.784.784 1 1.75 1ZM1.5 2.75v9.5c0 .138.112.25.25.25h2a.75.75 0 0 1 .75.75v2.19l2.72-2.72a.749.749 0 0 1 .53-.22h6.5a.25.25 0 0 0 .25-.25v-9.5a.25.25 0 0 0-.25-.25H1.75a.25.25 0 0 0-.25.25Z"></path><path d="M22.5 8.75a.25.25 0 0 0-.25-.25h-3.5a.75.75 0 0 1 0-1.5h3.5c.966 0 1.75.784 1.75 1.75v9.5A1.75 1.75 0 0 1 22.25 20H21v1.543a1.457 1.457 0 0 1-2.487 1.03L15.939 20H10.75A1.75 1.75 0 0 1 9 18.25v-1.465a.75.75 0 0 1 1.5 0v1.465c0 .138.112.25.25.25h5.5a.75.75 0 0 1 .53.22l2.72 2.72v-2.19a.75.75 0 0 1 .75-.75h2a.25.25 0 0 0 .25-.25v-9.5Z"></path> </svg> <div> <div class="color-fg-default h4">Discussions</div> Collaborate outside of code </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"code_search","context":"product","tag":"link","label":"code_search_link_product_navbar"}" href="https://github.com/features/code-search"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-code-square color-fg-subtle mr-3"> <path d="M10.3 8.24a.75.75 0 0 1-.04 1.06L7.352 12l2.908 2.7a.75.75 0 1 1-1.02 1.1l-3.5-3.25a.75.75 0 0 1 0-1.1l3.5-3.25a.75.75 0 0 1 1.06.04Zm3.44 1.06a.75.75 0 1 1 1.02-1.1l3.5 3.25a.75.75 0 0 1 0 1.1l-3.5 3.25a.75.75 0 1 1-1.02-1.1l2.908-2.7-2.908-2.7Z"></path><path d="M2 3.75C2 2.784 2.784 2 3.75 2h16.5c.966 0 1.75.784 1.75 1.75v16.5A1.75 1.75 0 0 1 20.25 22H3.75A1.75 1.75 0 0 1 2 20.25Zm1.75-.25a.25.25 0 0 0-.25.25v16.5c0 .138.112.25.25.25h16.5a.25.25 0 0 0 .25-.25V3.75a.25.25 0 0 0-.25-.25Z"></path> </svg> <div> <div class="color-fg-default h4">Code Search</div> Find more, search less </div> </a></li> </ul> </div> </div> <div class="HeaderMenu-column px-lg-4"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0 border-bottom-0"> <span class="d-block h4 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12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> </ul> </div> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Solutions <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 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Link--secondary" data-analytics-event="{"location":"navbar","action":"view_all_industries","context":"solutions","tag":"link","label":"view_all_industries_link_solutions_navbar"}" href="/solutions/industry"> View all industries </a></li> </ul> </div> </div> <div class="HeaderMenu-trailing-link rounded-bottom-2 flex-shrink-0 mt-lg-4 px-lg-4 py-4 py-lg-3 f5 text-semibold"> <a href="/solutions"> View all solutions <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-right HeaderMenu-trailing-link-icon"> <path d="M6.22 3.22a.75.75 0 0 1 1.06 0l4.25 4.25a.75.75 0 0 1 0 1.06l-4.25 4.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L9.94 8 6.22 4.28a.75.75 0 0 1 0-1.06Z"></path> </svg> </a> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Resources <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 pb-2 pb-lg-4 d-lg-flex flex-wrap dropdown-menu-wide"> <div class="HeaderMenu-column px-lg-4 border-lg-right mb-4 mb-lg-0 pr-lg-7"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0"> <span class="d-block h4 color-fg-default my-1" id="resources-topics-heading">Topics</span> <ul 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data-view-component="true" class="octicon octicon-link-external HeaderMenu-external-icon color-fg-subtle"> <path d="M3.75 2h3.5a.75.75 0 0 1 0 1.5h-3.5a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h8.5a.25.25 0 0 0 .25-.25v-3.5a.75.75 0 0 1 1.5 0v3.5A1.75 1.75 0 0 1 12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"executive_insights","context":"resources","tag":"link","label":"executive_insights_link_resources_navbar"}" href="https://github.com/solutions/executive-insights"> Executive Insights </a></li> </ul> </div> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Open Source <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 pb-2 pb-lg-4 px-lg-4"> <div class="HeaderMenu-column"> <div class="border-bottom pb-3 pb-lg-0 pb-lg-3 mb-3 mb-lg-0 mb-lg-3"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"github_sponsors","context":"open_source","tag":"link","label":"github_sponsors_link_open_source_navbar"}" href="/sponsors"> <div> <div class="color-fg-default h4">GitHub Sponsors</div> Fund open source developers </div> </a></li> </ul> </div> <div class="border-bottom pb-3 pb-lg-0 pb-lg-3 mb-3 mb-lg-0 mb-lg-3"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"the_readme_project","context":"open_source","tag":"link","label":"the_readme_project_link_open_source_navbar"}" href="https://github.com/readme"> <div> <div class="color-fg-default h4">The ReadME Project</div> GitHub community articles </div> </a></li> </ul> </div> <div class="border-bottom pb-3 pb-lg-0 border-bottom-0"> <span class="d-block h4 color-fg-default my-1" id="open-source-repositories-heading">Repositories</span> <ul class="list-style-none f5" aria-labelledby="open-source-repositories-heading"> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"topics","context":"open_source","tag":"link","label":"topics_link_open_source_navbar"}" href="https://github.com/topics"> Topics </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"trending","context":"open_source","tag":"link","label":"trending_link_open_source_navbar"}" href="https://github.com/trending"> Trending </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" 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1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path> </svg> <span class="flex-auto min-width-0 css-truncate css-truncate-target width-fit"> <a title="https://unifiedjs.com" role="link" target="_blank" class="text-bold" rel="noopener noreferrer" href="https://unifiedjs.com">unifiedjs.com</a> </span> </div> <h3 class="sr-only">License</h3> <div class="mb-2"> <a href="/unifiedjs/unified/blob/main/license" class="Link--muted" data-analytics-event="{"category":"Repository Overview","action":"click","label":"location:sidebar;file:license"}" > <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" 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href=\"https://unifiedjs.com\" rel=\"nofollow\"\u003e\u003cimg src=\"https://raw.githubusercontent.com/unifiedjs/unified/93862e5/logo.svg?sanitize=true\" alt=\"unified\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/h1\u003e\u003ca id=\"\" class=\"anchor\" aria-label=\"Permalink: \" href=\"#\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 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src=\"https://camo.githubusercontent.com/d1952fce43bb6e3da87a19c4f073333f64664936a1d79e4c7d96ee1aa0577300/68747470733a2f2f696d672e736869656c64732e696f2f6e706d2f646d2f756e69666965642e737667\" alt=\"Downloads\" data-canonical-src=\"https://img.shields.io/npm/dm/unified.svg\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003ca href=\"https://bundlejs.com/?q=unified\" rel=\"nofollow\"\u003e\u003cimg src=\"https://camo.githubusercontent.com/d5c6debb50de17e8c25666ac0b43a15ce5ef7278c7650da0e255fe19c0bd80a8/68747470733a2f2f696d672e736869656c64732e696f2f62756e646c656a732f73697a652f756e6966696564\" alt=\"Size\" data-canonical-src=\"https://img.shields.io/bundlejs/size/unified\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003ca href=\"https://opencollective.com/unified\" rel=\"nofollow\"\u003e\u003cimg src=\"https://camo.githubusercontent.com/e03ac3fb98194bae06ced94bbe385156b836c258a931ceb49361eabb758477bd/68747470733a2f2f6f70656e636f6c6c6563746976652e636f6d2f756e69666965642f73706f6e736f72732f62616467652e737667\" alt=\"Sponsors\" data-canonical-src=\"https://opencollective.com/unified/sponsors/badge.svg\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003ca href=\"https://opencollective.com/unified\" rel=\"nofollow\"\u003e\u003cimg src=\"https://camo.githubusercontent.com/6a27a556e720f7a532a9cdc63d0e62f584a886ca5b3a48029d1747e5b74b6523/68747470733a2f2f6f70656e636f6c6c6563746976652e636f6d2f756e69666965642f6261636b6572732f62616467652e737667\" alt=\"Backers\" data-canonical-src=\"https://opencollective.com/unified/backers/badge.svg\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003ca href=\"https://github.com/unifiedjs/unified/discussions\"\u003e\u003cimg src=\"https://camo.githubusercontent.com/869bb464c3a7c8b0d983c3838284c1cfb7620418f109816805119e8a8d681b9f/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f636861742d64697363757373696f6e732d737563636573732e737667\" alt=\"Chat\" data-canonical-src=\"https://img.shields.io/badge/chat-discussions-success.svg\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eunified\u003c/strong\u003e lets you inspect and transform content with plugins.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eContents\u003c/h2\u003e\u003ca id=\"user-content-contents\" class=\"anchor\" aria-label=\"Permalink: Contents\" href=\"#contents\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#what-is-this\"\u003eWhat is this?\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#when-should-i-use-this\"\u003eWhen should I use this?\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#install\"\u003eInstall\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#use\"\u003eUse\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#overview\"\u003eOverview\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#api\"\u003eAPI\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#processor\"\u003e\u003ccode\u003eprocessor()\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorcompiler\"\u003e\u003ccode\u003eprocessor.compiler\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processordatakey-value\"\u003e\u003ccode\u003eprocessor.data([key[, value]])\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorfreeze\"\u003e\u003ccode\u003eprocessor.freeze()\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorparsefile\"\u003e\u003ccode\u003eprocessor.parse(file)\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorparser\"\u003e\u003ccode\u003eprocessor.parser\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorprocessfile-done\"\u003e\u003ccode\u003eprocessor.process(file[, done])\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorprocesssyncfile\"\u003e\u003ccode\u003eprocessor.processSync(file)\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorruntree-file-done\"\u003e\u003ccode\u003eprocessor.run(tree[, file][, done])\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorrunsynctree-file\"\u003e\u003ccode\u003eprocessor.runSync(tree[, file])\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processorstringifytree-file\"\u003e\u003ccode\u003eprocessor.stringify(tree[, file])\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processoruseplugin-options\"\u003e\u003ccode\u003eprocessor.use(plugin[, options])\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#compileresultmap\"\u003e\u003ccode\u003eCompileResultMap\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#compileresults\"\u003e\u003ccode\u003eCompileResults\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#compiler\"\u003e\u003ccode\u003eCompiler\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#data\"\u003e\u003ccode\u003eData\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#parser\"\u003e\u003ccode\u003eParser\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#pluggable\"\u003e\u003ccode\u003ePluggable\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#pluggablelist\"\u003e\u003ccode\u003ePluggableList\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#plugin\"\u003e\u003ccode\u003ePlugin\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#plugintuple\"\u003e\u003ccode\u003ePluginTuple\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#preset\"\u003e\u003ccode\u003ePreset\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processcallback\"\u003e\u003ccode\u003eProcessCallback\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#processor-1\"\u003e\u003ccode\u003eProcessor\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#runcallback\"\u003e\u003ccode\u003eRunCallback\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#settings\"\u003e\u003ccode\u003eSettings\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#transformcallback\"\u003e\u003ccode\u003eTransformCallback\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#transformer\"\u003e\u003ccode\u003eTransformer\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#types\"\u003eTypes\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#compatibility\"\u003eCompatibility\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#contribute\"\u003eContribute\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#sponsor\"\u003eSponsor\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#acknowledgments\"\u003eAcknowledgments\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#license\"\u003eLicense\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWhat is this?\u003c/h2\u003e\u003ca id=\"user-content-what-is-this\" class=\"anchor\" aria-label=\"Permalink: What is this?\" href=\"#what-is-this\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eunified is two things:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003cstrong\u003eunified\u003c/strong\u003e is a collective of 500+ free and open source packages that work\nwith content as structured data (ASTs)\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eunified\u003c/code\u003e (this project) is the core package, used in 1.3m+ projects on GH,\nto process content with plugins\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eSeveral ecosystems are built on unified around different kinds of content.\nNotably, \u003ca href=\"https://github.com/remarkjs/remark\"\u003eremark\u003c/a\u003e (markdown), \u003ca href=\"https://github.com/rehypejs/rehype\"\u003erehype\u003c/a\u003e (HTML), and \u003ca href=\"https://github.com/retextjs/retext\"\u003eretext\u003c/a\u003e (natural\nlanguage).\nThese ecosystems can be connected together.\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003efor more about us, see \u003ca href=\"https://unifiedjs.com\" rel=\"nofollow\"\u003e\u003ccode\u003eunifiedjs.com\u003c/code\u003e\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003efor questions, see \u003ca href=\"https://github.com/unifiedjs/.github/blob/main/support.md\"\u003esupport\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eto help, see \u003ca href=\"#contribute\"\u003econtribute\u003c/a\u003e and \u003ca href=\"#sponsor\"\u003esponsor\u003c/a\u003e below\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eWhen should I use this?\u003c/h2\u003e\u003ca id=\"user-content-when-should-i-use-this\" class=\"anchor\" aria-label=\"Permalink: When should I use this?\" href=\"#when-should-i-use-this\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn some cases, you are already using unified.\nFor example, it’s used in MDX, Gatsby, Docusaurus, etc.\nIn those cases, you don’t need to add \u003ccode\u003eunified\u003c/code\u003e yourself but you can include\nplugins into those projects.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eBut the real fun (for some) is to get your hands dirty and work with syntax\ntrees and build with it yourself.\nYou can create those projects, or things like Prettier, or your own site\ngenerator.\nYou can connect utilities together and make your own plugins that check for\nproblems and transform from one thing to another.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWhen you are dealing with one type of content (such as markdown), you can use\nthe main package of that ecosystem instead (so \u003ccode\u003eremark\u003c/code\u003e).\nWhen you are dealing with different kinds of content (such as markdown and\nHTML), it’s recommended to use \u003ccode\u003eunified\u003c/code\u003e itself, and pick and choose the plugins\nyou need.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eInstall\u003c/h2\u003e\u003ca id=\"user-content-install\" class=\"anchor\" aria-label=\"Permalink: Install\" href=\"#install\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis package is \u003ca href=\"https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c\"\u003eESM only\u003c/a\u003e.\nIn Node.js (version 16+), install with \u003ca href=\"https://docs.npmjs.com/cli/install\" rel=\"nofollow\"\u003enpm\u003c/a\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"npm install unified\"\u003e\u003cpre\u003enpm install unified\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn Deno with \u003ca href=\"https://esm.sh\" rel=\"nofollow\"\u003e\u003ccode\u003eesm.sh\u003c/code\u003e\u003c/a\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import {unified} from 'https://esm.sh/unified@11'\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'https://esm.sh/unified@11'\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn browsers with \u003ca href=\"https://esm.sh\" rel=\"nofollow\"\u003e\u003ccode\u003eesm.sh\u003c/code\u003e\u003c/a\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;script type=\u0026quot;module\u0026quot;\u0026gt;\n import {unified} from 'https://esm.sh/unified@11?bundle'\n\u0026lt;/script\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003escript\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003etype\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003emodule\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'https://esm.sh/unified@11?bundle'\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003escript\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUse\u003c/h2\u003e\u003ca id=\"user-content-use\" class=\"anchor\" aria-label=\"Permalink: Use\" href=\"#use\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import rehypeDocument from 'rehype-document'\nimport rehypeFormat from 'rehype-format'\nimport rehypeStringify from 'rehype-stringify'\nimport remarkParse from 'remark-parse'\nimport remarkRehype from 'remark-rehype'\nimport {unified} from 'unified'\nimport {reporter} from 'vfile-reporter'\n\nconst file = await unified()\n .use(remarkParse)\n .use(remarkRehype)\n .use(rehypeDocument, {title: '👋🌍'})\n .use(rehypeFormat)\n .use(rehypeStringify)\n .process('# Hello world!')\n\nconsole.error(reporter(file))\nconsole.log(String(file))\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeDocument\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-document'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-format'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-stringify'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-parse'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-rehype'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'vfile-reporter'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeDocument\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003etitle\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'👋🌍'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eprocess\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'# Hello world!'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eerror\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-en\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003elog\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eString\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-adblock notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"no issues found\"\u003e\u003cpre\u003eno issues found\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;!doctype html\u0026gt;\n\u0026lt;html lang=\u0026quot;en\u0026quot;\u0026gt;\n \u0026lt;head\u0026gt;\n \u0026lt;meta charset=\u0026quot;utf-8\u0026quot;\u0026gt;\n \u0026lt;title\u0026gt;👋🌍\u0026lt;/title\u0026gt;\n \u0026lt;meta name=\u0026quot;viewport\u0026quot; content=\u0026quot;width=device-width, initial-scale=1\u0026quot;\u0026gt;\n \u0026lt;/head\u0026gt;\n \u0026lt;body\u0026gt;\n \u0026lt;h1\u0026gt;Hello world!\u0026lt;/h1\u0026gt;\n \u0026lt;/body\u0026gt;\n\u0026lt;/html\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;!doctype html\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehtml\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003elang\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003een\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehead\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003emeta\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003echarset\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003eutf-8\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003etitle\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e👋🌍\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003etitle\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003emeta\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003ename\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003eviewport\u003c/span\u003e\" \u003cspan class=\"pl-c1\"\u003econtent\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003ewidth=device-width, initial-scale=1\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehead\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ebody\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003eHello world!\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ebody\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehtml\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\n\u003cp dir=\"auto\"\u003e\u003ca name=\"user-content-description\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eOverview\u003c/h2\u003e\u003ca id=\"user-content-overview\" class=\"anchor\" aria-label=\"Permalink: Overview\" href=\"#overview\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eunified\u003c/code\u003e is an interface for processing content with syntax trees.\nSyntax trees are a representation of content understandable to programs.\nThose programs, called \u003cem\u003e\u003ca href=\"#plugin\"\u003eplugins\u003c/a\u003e\u003c/em\u003e, take these trees and inspect and\nmodify them.\nTo get to the syntax tree from text, there is a \u003cem\u003e\u003ca href=\"#parser\"\u003eparser\u003c/a\u003e\u003c/em\u003e.\nTo get from that back to text, there is a \u003cem\u003e\u003ca href=\"#compiler\"\u003ecompiler\u003c/a\u003e\u003c/em\u003e.\nThis is the \u003cem\u003e\u003ca href=\"#processorprocessfile-done\"\u003eprocess\u003c/a\u003e\u003c/em\u003e of a \u003cem\u003eprocessor\u003c/em\u003e.\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"| ........................ process ........................... |\n| .......... parse ... | ... run ... | ... stringify ..........|\n\n +--------+ +----------+\nInput -\u0026gt;- | Parser | -\u0026gt;- Syntax Tree -\u0026gt;- | Compiler | -\u0026gt;- Output\n +--------+ | +----------+\n X\n |\n +--------------+\n | Transformers |\n +--------------+\"\u003e\u003cpre lang=\"ascii\" class=\"notranslate\"\u003e\u003ccode\u003e| ........................ process ........................... |\n| .......... parse ... | ... run ... | ... stringify ..........|\n\n +--------+ +----------+\nInput -\u0026gt;- | Parser | -\u0026gt;- Syntax Tree -\u0026gt;- | Compiler | -\u0026gt;- Output\n +--------+ | +----------+\n X\n |\n +--------------+\n | Transformers |\n +--------------+\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eProcessors\u003c/h6\u003e\u003ca id=\"user-content-processors\" class=\"anchor\" aria-label=\"Permalink: Processors\" href=\"#processors\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eProcessors process content.\nOn its own, \u003ccode\u003eunified\u003c/code\u003e (the root processor) doesn’t work.\nIt needs to be configured with plugins to work.\nFor example:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"const processor = unified()\n .use(remarkParse)\n .use(remarkRehype)\n .use(rehypeDocument, {title: '👋🌍'})\n .use(rehypeFormat)\n .use(rehypeStringify)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eprocessor\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeDocument\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003etitle\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'👋🌍'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThat processor can do different things.\nIt can:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e…parse markdown (\u003ccode\u003eparse\u003c/code\u003e)\u003c/li\u003e\n\u003cli\u003e…turn parsed markdown into HTML and format the HTML (\u003ccode\u003erun\u003c/code\u003e)\u003c/li\u003e\n\u003cli\u003e…compile HTML (\u003ccode\u003estringify\u003c/code\u003e)\u003c/li\u003e\n\u003cli\u003e…do all of the above (\u003ccode\u003eprocess\u003c/code\u003e)\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eEvery processor implements another processor.\nTo create a processor, call another processor.\nThe new processor is configured to work the same as its ancestor.\nBut when the descendant processor is configured in the future it does not affect\nthe ancestral processor.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWhen processors are exposed from a module (for example, \u003ccode\u003eunified\u003c/code\u003e itself) they\nshould not be configured directly, as that would change their behavior for all\nmodule users.\nThose processors are \u003cem\u003e\u003ca href=\"#processorfreeze\"\u003efrozen\u003c/a\u003e\u003c/em\u003e and they should be called to create\na new processor before they are used.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFile\u003c/h6\u003e\u003ca id=\"user-content-file\" class=\"anchor\" aria-label=\"Permalink: File\" href=\"#file\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWhen processing a document, metadata is gathered about that document.\n\u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003evfile\u003c/code\u003e\u003c/a\u003e is the file format that stores data, metadata, and messages\nabout files for unified and plugins.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThere are several \u003ca href=\"https://github.com/vfile/vfile#list-of-utilities\"\u003eutilities\u003c/a\u003e for working with these files.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSyntax tree\u003c/h6\u003e\u003ca id=\"user-content-syntax-tree\" class=\"anchor\" aria-label=\"Permalink: Syntax tree\" href=\"#syntax-tree\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe syntax trees used in unified are \u003ca href=\"https://github.com/syntax-tree/unist\"\u003eunist\u003c/a\u003e nodes.\nA tree represents a whole document and each \u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003enode\u003c/a\u003e is a plain JavaScript\nobject with a \u003ccode\u003etype\u003c/code\u003e field.\nThe semantics of nodes and the format of syntax trees is defined by other\nprojects:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/syntax-tree/esast\"\u003eesast\u003c/a\u003e — JavaScript\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/syntax-tree/hast\"\u003ehast\u003c/a\u003e — HTML\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/syntax-tree/mdast\"\u003emdast\u003c/a\u003e — markdown\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/syntax-tree/nlcst\"\u003enlcst\u003c/a\u003e — natural language\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/syntax-tree/xast\"\u003exast\u003c/a\u003e — XML\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eThere are many utilities for working with trees listed in each aforementioned\nproject and maintained in the \u003ca href=\"https://github.com/syntax-tree\"\u003e\u003ccode\u003esyntax-tree\u003c/code\u003e\u003c/a\u003e organization.\nThese utilities are a level lower than unified itself and are building blocks\nthat can be used to make plugins.\u003c/p\u003e\n\n\u003cp dir=\"auto\"\u003e\u003ca name=\"user-content-list-of-processors\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEcosystems\u003c/h6\u003e\u003ca id=\"user-content-ecosystems\" class=\"anchor\" aria-label=\"Permalink: Ecosystems\" href=\"#ecosystems\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAround each syntax tree is an ecosystem that focusses on that particular kind\nof content.\nAt their core, they parse text to a tree and compile that tree back to text.\nThey also provide plugins that work with the syntax tree, without requiring\nthat the end user has knowledge about that tree.\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/rehypejs/rehype\"\u003erehype\u003c/a\u003e (hast) — HTML\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/remarkjs/remark\"\u003eremark\u003c/a\u003e (mdast) — markdown\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/retextjs/retext\"\u003eretext\u003c/a\u003e (nlcst) — natural language\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003e\u003ca name=\"user-content-list-of-plugins\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003ePlugins\u003c/h6\u003e\u003ca id=\"user-content-plugins\" class=\"anchor\" aria-label=\"Permalink: Plugins\" href=\"#plugins\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eEach aforementioned ecosystem comes with a large set of plugins that you can\npick and choose from to do all kinds of things.\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/remarkjs/remark/blob/main/doc/plugins.md#list-of-plugins\"\u003eList of remark plugins\u003c/a\u003e ·\n\u003ca href=\"https://github.com/remarkjs/awesome-remark\"\u003e\u003ccode\u003eremarkjs/awesome-remark\u003c/code\u003e\u003c/a\u003e ·\n\u003ca href=\"https://github.com/topics/remark-plugin\"\u003e\u003ccode\u003eremark-plugin\u003c/code\u003e topic\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/rehypejs/rehype/blob/main/doc/plugins.md#list-of-plugins\"\u003eList of rehype plugins\u003c/a\u003e ·\n\u003ca href=\"https://github.com/rehypejs/awesome-rehype\"\u003e\u003ccode\u003erehypejs/awesome-rehype\u003c/code\u003e\u003c/a\u003e ·\n\u003ca href=\"https://github.com/topics/rehype-plugin\"\u003e\u003ccode\u003erehype-plugin\u003c/code\u003e topic\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/retextjs/retext/blob/main/doc/plugins.md#list-of-plugins\"\u003eList of retext plugins\u003c/a\u003e ·\n\u003ca href=\"https://github.com/retextjs/awesome-retext\"\u003e\u003ccode\u003eretextjs/awesome-retext\u003c/code\u003e\u003c/a\u003e ·\n\u003ca href=\"https://github.com/topics/retext-plugin\"\u003e\u003ccode\u003eretext-plugin\u003c/code\u003e topic\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eThere are also a few plugins that work in any ecosystem:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/unifiedjs/unified-diff\"\u003e\u003ccode\u003eunified-diff\u003c/code\u003e\u003c/a\u003e\n— ignore unrelated messages in GitHub Actions and Travis\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/unifiedjs/unified-infer-git-meta\"\u003e\u003ccode\u003eunified-infer-git-meta\u003c/code\u003e\u003c/a\u003e\n— infer metadata of a document from Git\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/unifiedjs/unified-message-control\"\u003e\u003ccode\u003eunified-message-control\u003c/code\u003e\u003c/a\u003e\n— enable, disable, and ignore messages from content\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eConfiguration\u003c/h6\u003e\u003ca id=\"user-content-configuration\" class=\"anchor\" aria-label=\"Permalink: Configuration\" href=\"#configuration\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eProcessors are configured with \u003ca href=\"#plugin\"\u003eplugins\u003c/a\u003e or with the\n\u003ca href=\"#data\"\u003e\u003ccode\u003edata\u003c/code\u003e\u003c/a\u003e method.\nMost plugins also accept configuration through options.\nSee each plugin’s readme for more info.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eIntegrations\u003c/h6\u003e\u003ca id=\"user-content-integrations\" class=\"anchor\" aria-label=\"Permalink: Integrations\" href=\"#integrations\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eunified can integrate with the file system through\n\u003ca href=\"https://github.com/unifiedjs/unified-engine\"\u003e\u003ccode\u003eunified-engine\u003c/code\u003e\u003c/a\u003e.\nCLI apps can be created with \u003ca href=\"https://github.com/unifiedjs/unified-args\"\u003e\u003ccode\u003eunified-args\u003c/code\u003e\u003c/a\u003e, Gulp plugins with\n\u003ca href=\"https://github.com/unifiedjs/unified-engine-gulp\"\u003e\u003ccode\u003eunified-engine-gulp\u003c/code\u003e\u003c/a\u003e, and language servers with\n\u003ca href=\"https://github.com/unifiedjs/unified-language-server\"\u003e\u003ccode\u003eunified-language-server\u003c/code\u003e\u003c/a\u003e.\nA streaming interface can be created with \u003ca href=\"https://github.com/unifiedjs/unified-stream\"\u003e\u003ccode\u003eunified-stream\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eProgramming interface\u003c/h6\u003e\u003ca id=\"user-content-programming-interface\" class=\"anchor\" aria-label=\"Permalink: Programming interface\" href=\"#programming-interface\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ca href=\"#api\"\u003eAPI\u003c/a\u003e provided by \u003ccode\u003eunified\u003c/code\u003e allows multiple files to be processed and\ngives access to metadata (such as lint messages):\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import rehypeStringify from 'rehype-stringify'\nimport remarkParse from 'remark-parse'\nimport remarkPresetLintMarkdownStyleGuide from 'remark-preset-lint-markdown-style-guide'\nimport remarkRehype from 'remark-rehype'\nimport remarkRetext from 'remark-retext'\nimport retextEnglish from 'retext-english'\nimport retextEquality from 'retext-equality'\nimport {unified} from 'unified'\nimport {reporter} from 'vfile-reporter'\n\nconst file = await unified()\n .use(remarkParse)\n .use(remarkPresetLintMarkdownStyleGuide)\n .use(remarkRetext, unified().use(retextEnglish).use(retextEquality))\n .use(remarkRehype)\n .use(rehypeStringify)\n .process('*Emphasis* and _stress_, you guys!')\n\nconsole.error(reporter(file))\nconsole.log(String(file))\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-stringify'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-parse'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkPresetLintMarkdownStyleGuide\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-preset-lint-markdown-style-guide'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-rehype'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkRetext\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-retext'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eretextEnglish\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'retext-english'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eretextEquality\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'retext-equality'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'vfile-reporter'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkPresetLintMarkdownStyleGuide\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkRetext\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eretextEnglish\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eretextEquality\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eprocess\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'*Emphasis* and _stress_, you guys!'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eerror\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-en\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003elog\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eString\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-adblock notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"1:16-1:24 warning Emphasis should use `*` as a marker emphasis-marker remark-lint\n1:30-1:34 warning `guys` may be insensitive, use `people`, `persons`, `folks` instead gals-man retext-equality\n\n⚠ 2 warnings\"\u003e\u003cpre\u003e1:16-1:24 warning Emphasis should use `\u003cspan class=\"pl-k\"\u003e*\u003c/span\u003e` as a marker emphasis-marker remark-lint\n1:30-1:34 warning `guys` may be insensitive, use `people`, `persons`, `folks` instead gals-man retext-equality\n\n⚠ 2 warnings\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;p\u0026gt;\u0026lt;em\u0026gt;Emphasis\u0026lt;/em\u0026gt; and \u0026lt;em\u0026gt;stress\u0026lt;/em\u0026gt;, you guys!\u0026lt;/p\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eem\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003eEmphasis\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eem\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e and \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eem\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003estress\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eem\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e, you guys!\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ep\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\n\u003cp dir=\"auto\"\u003e\u003ca name=\"user-content-processing-between-syntaxes\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTransforming between ecosystems\u003c/h6\u003e\u003ca id=\"user-content-transforming-between-ecosystems\" class=\"anchor\" aria-label=\"Permalink: Transforming between ecosystems\" href=\"#transforming-between-ecosystems\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eEcosystems can be combined in two modes.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eBridge\u003c/strong\u003e mode transforms the tree from one format (\u003cem\u003eorigin\u003c/em\u003e) to another\n(\u003cem\u003edestination\u003c/em\u003e).\nA different processor runs on the destination tree.\nAfterwards, the original processor continues with the origin tree.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eMutate\u003c/strong\u003e mode also transforms the syntax tree from one format to another.\nBut the original processor continues transforming the destination tree.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIn the previous example (“Programming interface”), \u003ccode\u003eremark-retext\u003c/code\u003e is used in\nbridge mode: the origin syntax tree is kept after retext is done; whereas\n\u003ccode\u003eremark-rehype\u003c/code\u003e is used in mutate mode: it sets a new syntax tree and discards\nthe origin tree.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe following plugins lets you combine ecosystems:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/remarkjs/remark-retext\"\u003e\u003ccode\u003eremark-retext\u003c/code\u003e\u003c/a\u003e — turn markdown into natural language\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/remarkjs/remark-rehype\"\u003e\u003ccode\u003eremark-rehype\u003c/code\u003e\u003c/a\u003e — turn markdown into HTML\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/rehypejs/rehype-retext\"\u003e\u003ccode\u003erehype-retext\u003c/code\u003e\u003c/a\u003e — turn HTML into natural language\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/rehypejs/rehype-remark\"\u003e\u003ccode\u003erehype-remark\u003c/code\u003e\u003c/a\u003e — turn HTML into markdown\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAPI\u003c/h2\u003e\u003ca id=\"user-content-api\" class=\"anchor\" aria-label=\"Permalink: API\" href=\"#api\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis package exports the identifier \u003ccode\u003eunified\u003c/code\u003e (the root \u003ccode\u003eprocessor\u003c/code\u003e).\nThere is no default export.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor()\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processor\" class=\"anchor\" aria-label=\"Permalink: processor()\" href=\"#processor\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCreate a new processor.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eNew \u003cem\u003e\u003ca href=\"#processorfreeze\"\u003eunfrozen\u003c/a\u003e\u003c/em\u003e processor (\u003ca href=\"#processor\"\u003e\u003ccode\u003eprocessor\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThis processor is configured to work the same as its ancestor.\nWhen the descendant processor is configured in the future it does not affect\nthe ancestral processor.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example shows how a new processor can be created (from \u003ccode\u003eremark\u003c/code\u003e) and linked\nto \u003cstrong\u003estdin\u003c/strong\u003e(4) and \u003cstrong\u003estdout\u003c/strong\u003e(4).\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import process from 'node:process'\nimport concatStream from 'concat-stream'\nimport {remark} from 'remark'\n\nprocess.stdin.pipe(\n concatStream(function (buf) {\n process.stdout.write(String(remark().processSync(buf)))\n })\n)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eprocess\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'node:process'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003econcatStream\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'concat-stream'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremark\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark'\u003c/span\u003e\n\n\u003cspan class=\"pl-s1\"\u003eprocess\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003estdin\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003epipe\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\n \u003cspan class=\"pl-en\"\u003econcatStream\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003ebuf\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003eprocess\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003estdout\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003ewrite\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eString\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eremark\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eprocessSync\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003ebuf\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.compiler\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorcompiler\" class=\"anchor\" aria-label=\"Permalink: processor.compiler\" href=\"#processorcompiler\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCompiler to use (\u003ca href=\"#compiler\"\u003e\u003ccode\u003eCompiler\u003c/code\u003e\u003c/a\u003e, optional).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.data([key[, value]])\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processordatakey-value\" class=\"anchor\" aria-label=\"Permalink: processor.data([key[, value]])\" href=\"#processordatakey-value\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eConfigure the processor with info available to all plugins.\nInformation is stored in an object.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTypically, options can be given to a specific plugin, but sometimes it makes\nsense to have information shared with several plugins.\nFor example, a list of HTML elements that are self-closing, which is needed\nduring all \u003ca href=\"#overview\"\u003ephases\u003c/a\u003e.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: setting information cannot occur on \u003cem\u003e\u003ca href=\"#processorfreeze\"\u003efrozen\u003c/a\u003e\u003c/em\u003e\nprocessors.\nCall the processor first to create a new unfrozen processor.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: to register custom data in TypeScript, augment the\n\u003ca href=\"#data\"\u003e\u003ccode\u003eData\u003c/code\u003e\u003c/a\u003e interface.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSignatures\u003c/h6\u003e\u003ca id=\"user-content-signatures\" class=\"anchor\" aria-label=\"Permalink: Signatures\" href=\"#signatures\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eprocessor = processor.data(key, value)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eprocessor = processor.data(dataset)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003evalue = processor.data(key)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edataset = processor.data()\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003ekey\u003c/code\u003e (\u003ca href=\"#data\"\u003e\u003ccode\u003ekeyof Data\u003c/code\u003e\u003c/a\u003e, optional) — field to get\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003evalue\u003c/code\u003e (\u003ca href=\"#data\"\u003e\u003ccode\u003eData[key]\u003c/code\u003e\u003c/a\u003e) — value to set\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003evalues\u003c/code\u003e (\u003ca href=\"#data\"\u003e\u003ccode\u003eData\u003c/code\u003e\u003c/a\u003e) — values to set\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-1\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-1\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe current processor when setting (\u003ca href=\"#processor\"\u003e\u003ccode\u003eprocessor\u003c/code\u003e\u003c/a\u003e), the value at\n\u003ccode\u003ekey\u003c/code\u003e when getting (\u003ca href=\"#data\"\u003e\u003ccode\u003eData[key]\u003c/code\u003e\u003c/a\u003e), or the entire dataset when\ngetting without key (\u003ca href=\"#data\"\u003e\u003ccode\u003eData\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-1\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-1\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example show how to get and set info:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import {unified} from 'unified'\n\nconst processor = unified().data('alpha', 'bravo')\n\nprocessor.data('alpha') // =\u0026gt; 'bravo'\n\nprocessor.data() // =\u0026gt; {alpha: 'bravo'}\n\nprocessor.data({charlie: 'delta'})\n\nprocessor.data() // =\u0026gt; {charlie: 'delta'}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eprocessor\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003edata\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'alpha'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'bravo'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-s1\"\u003eprocessor\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003edata\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'alpha'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// =\u0026gt; 'bravo'\u003c/span\u003e\n\n\u003cspan class=\"pl-s1\"\u003eprocessor\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003edata\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// =\u0026gt; {alpha: 'bravo'}\u003c/span\u003e\n\n\u003cspan class=\"pl-s1\"\u003eprocessor\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003edata\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003echarlie\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'delta'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-s1\"\u003eprocessor\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003edata\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// =\u0026gt; {charlie: 'delta'}\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.freeze()\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorfreeze\" class=\"anchor\" aria-label=\"Permalink: processor.freeze()\" href=\"#processorfreeze\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eFreeze a processor.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFrozen processors are meant to be extended and not to be configured directly.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWhen a processor is frozen it cannot be unfrozen.\nNew processors working the same way can be created by calling the processor.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIt’s possible to freeze processors explicitly by calling \u003ccode\u003e.freeze()\u003c/code\u003e.\nProcessors freeze automatically when \u003ccode\u003e.parse()\u003c/code\u003e, \u003ccode\u003e.run()\u003c/code\u003e, \u003ccode\u003e.runSync()\u003c/code\u003e,\n\u003ccode\u003e.stringify()\u003c/code\u003e, \u003ccode\u003e.process()\u003c/code\u003e, or \u003ccode\u003e.processSync()\u003c/code\u003e are called.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-2\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-2\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe current processor (\u003ca href=\"#processor\"\u003e\u003ccode\u003eprocessor\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-2\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-2\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example, \u003ccode\u003eindex.js\u003c/code\u003e, shows how \u003ccode\u003erehype\u003c/code\u003e prevents extensions to itself:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import rehypeParse from 'rehype-parse'\nimport rehypeStringify from 'rehype-stringify'\nimport {unified} from 'unified'\n\nexport const rehype = unified().use(rehypeParse).use(rehypeStringify).freeze()\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeParse\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-parse'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-stringify'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehype\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003efreeze\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThat processor can be used and configured like so:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import {rehype} from 'rehype'\nimport rehypeFormat from 'rehype-format'\n// …\n\nrehype()\n .use(rehypeFormat)\n // …\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-format'\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e// …\u003c/span\u003e\n\n\u003cspan class=\"pl-en\"\u003erehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// …\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eA similar looking example is broken as operates on the frozen interface.\nIf this behavior was allowed it would result in unexpected behavior so an error\nis thrown.\n\u003cstrong\u003eThis is not valid\u003c/strong\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import {rehype} from 'rehype'\nimport rehypeFormat from 'rehype-format'\n// …\n\nrehype\n .use(rehypeFormat)\n // …\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-format'\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e// …\u003c/span\u003e\n\n\u003cspan class=\"pl-s1\"\u003erehype\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// …\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-adblock notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"~/node_modules/unified/index.js:426\n throw new Error(\n ^\n\nError: Cannot call `use` on a frozen processor.\nCreate a new processor first, by calling it: use `processor()` instead of `processor`.\n at assertUnfrozen (~/node_modules/unified/index.js:426:11)\n at Function.use (~/node_modules/unified/index.js:165:5)\n …\"\u003e\u003cpre\u003e~/node_modules/unified/index.js:426\n throw new Error(\n \u003cspan class=\"pl-k\"\u003e^\u003c/span\u003e\n\nError: Cannot call `use` on a frozen processor.\nCreate a new processor first, by calling it: use `processor()` instead of `processor`.\n at assertUnfrozen (~/node_modules/unified/index.js:426:11)\n at Function.use (~/node_modules/unified/index.js:165:5)\n …\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.parse(file)\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorparsefile\" class=\"anchor\" aria-label=\"Permalink: processor.parse(file)\" href=\"#processorparsefile\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eParse text to a syntax tree.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003eparse\u003c/code\u003e freezes the processor if not already\n\u003cem\u003e\u003ca href=\"#processorfreeze\"\u003efrozen\u003c/a\u003e\u003c/em\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003eparse\u003c/code\u003e performs the \u003ca href=\"#overview\"\u003eparse phase\u003c/a\u003e, not the run phase\nor other phases.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-1\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-1\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile#compatible\"\u003e\u003ccode\u003eCompatible\u003c/code\u003e\u003c/a\u003e) — file to parse; typically\n\u003ccode\u003estring\u003c/code\u003e or \u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e; any value accepted as \u003ccode\u003ex\u003c/code\u003e in \u003ccode\u003enew VFile(x)\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-3\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-3\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSyntax tree representing \u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-3\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-3\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example shows how \u003ccode\u003eparse\u003c/code\u003e can be used to create a tree from a file.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import remarkParse from 'remark-parse'\nimport {unified} from 'unified'\n\nconst tree = unified().use(remarkParse).parse('# Hello world!')\n\nconsole.log(tree)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-parse'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eparse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'# Hello world!'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003elog\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"{\n type: 'root',\n children: [\n {type: 'heading', depth: 1, children: [Array], position: [Object]}\n ],\n position: {\n start: {line: 1, column: 1, offset: 0},\n end: {line: 1, column: 15, offset: 14}\n }\n}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003etype\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'root'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003echildren\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003etype\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'heading'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003edepth\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003echildren\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eArray\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eposition\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eObject\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003eposition\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003estart\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eline\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003ecolumn\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eoffset\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e0\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003eend\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eline\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003ecolumn\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e15\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eoffset\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e14\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.parser\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorparser\" class=\"anchor\" aria-label=\"Permalink: processor.parser\" href=\"#processorparser\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eParser to use (\u003ca href=\"#parser\"\u003e\u003ccode\u003eParser\u003c/code\u003e\u003c/a\u003e, optional).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.process(file[, done])\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorprocessfile-done\" class=\"anchor\" aria-label=\"Permalink: processor.process(file[, done])\" href=\"#processorprocessfile-done\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eProcess the given file as configured on the processor.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003eprocess\u003c/code\u003e freezes the processor if not already\n\u003cem\u003e\u003ca href=\"#processorfreeze\"\u003efrozen\u003c/a\u003e\u003c/em\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003eprocess\u003c/code\u003e performs the \u003ca href=\"#overview\"\u003eparse, run, and stringify\nphases\u003c/a\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSignatures\u003c/h6\u003e\u003ca id=\"user-content-signatures-1\" class=\"anchor\" aria-label=\"Permalink: Signatures\" href=\"#signatures-1\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eprocessor.process(file, done)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ePromise\u0026lt;VFile\u0026gt; = processor.process(file?)\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-2\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-2\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile#compatible\"\u003e\u003ccode\u003eCompatible\u003c/code\u003e\u003c/a\u003e, optional) — file; typically\n\u003ccode\u003estring\u003c/code\u003e or \u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e; any value accepted as \u003ccode\u003ex\u003c/code\u003e in \u003ccode\u003enew VFile(x)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edone\u003c/code\u003e (\u003ca href=\"#processcallback\"\u003e\u003ccode\u003eProcessCallback\u003c/code\u003e\u003c/a\u003e, optional) — callback\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-4\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-4\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eNothing if \u003ccode\u003edone\u003c/code\u003e is given (\u003ccode\u003eundefined\u003c/code\u003e).\nOtherwise a promise, rejected with a fatal error or resolved with the\nprocessed file (\u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003ePromise\u0026lt;VFile\u0026gt;\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe parsed, transformed, and compiled value is available at \u003ccode\u003efile.value\u003c/code\u003e (see\nnote).\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: unified typically compiles by serializing: most\ncompilers return \u003ccode\u003estring\u003c/code\u003e (or \u003ccode\u003eUint8Array\u003c/code\u003e).\nSome compilers, such as the one configured with\n\u003ca href=\"https://github.com/rehypejs/rehype-react\"\u003e\u003ccode\u003erehype-react\u003c/code\u003e\u003c/a\u003e, return other values (in this case, a React\ntree).\nIf you’re using a compiler that doesn’t serialize, expect different result\nvalues.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo register custom results in TypeScript, add them to\n\u003ca href=\"#compileresultmap\"\u003e\u003ccode\u003eCompileResultMap\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-4\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-4\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example shows how \u003ccode\u003eprocess\u003c/code\u003e can be used to process a file:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import rehypeDocument from 'rehype-document'\nimport rehypeFormat from 'rehype-format'\nimport rehypeStringify from 'rehype-stringify'\nimport remarkParse from 'remark-parse'\nimport remarkRehype from 'remark-rehype'\nimport {unified} from 'unified'\n\nconst file = await unified()\n .use(remarkParse)\n .use(remarkRehype)\n .use(rehypeDocument, {title: '👋🌍'})\n .use(rehypeFormat)\n .use(rehypeStringify)\n .process('# Hello world!')\n\nconsole.log(String(file))\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeDocument\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-document'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-format'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-stringify'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-parse'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-rehype'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeDocument\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003etitle\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'👋🌍'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eprocess\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'# Hello world!'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003elog\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eString\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;!doctype html\u0026gt;\n\u0026lt;html lang=\u0026quot;en\u0026quot;\u0026gt;\n \u0026lt;head\u0026gt;\n \u0026lt;meta charset=\u0026quot;utf-8\u0026quot;\u0026gt;\n \u0026lt;title\u0026gt;👋🌍\u0026lt;/title\u0026gt;\n \u0026lt;meta name=\u0026quot;viewport\u0026quot; content=\u0026quot;width=device-width, initial-scale=1\u0026quot;\u0026gt;\n \u0026lt;/head\u0026gt;\n \u0026lt;body\u0026gt;\n \u0026lt;h1\u0026gt;Hello world!\u0026lt;/h1\u0026gt;\n \u0026lt;/body\u0026gt;\n\u0026lt;/html\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;!doctype html\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehtml\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003elang\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003een\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehead\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003emeta\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003echarset\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003eutf-8\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003etitle\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e👋🌍\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003etitle\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003emeta\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003ename\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003eviewport\u003c/span\u003e\" \u003cspan class=\"pl-c1\"\u003econtent\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003ewidth=device-width, initial-scale=1\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehead\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ebody\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003eHello world!\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ebody\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehtml\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.processSync(file)\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorprocesssyncfile\" class=\"anchor\" aria-label=\"Permalink: processor.processSync(file)\" href=\"#processorprocesssyncfile\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eProcess the given file as configured on the processor.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAn error is thrown if asynchronous transforms are configured.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003eprocessSync\u003c/code\u003e freezes the processor if not already\n\u003cem\u003e\u003ca href=\"#processorfreeze\"\u003efrozen\u003c/a\u003e\u003c/em\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003eprocessSync\u003c/code\u003e performs the \u003ca href=\"#overview\"\u003eparse, run, and stringify\nphases\u003c/a\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-3\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-3\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile#compatible\"\u003e\u003ccode\u003eCompatible\u003c/code\u003e\u003c/a\u003e, optional) — file; typically\n\u003ccode\u003estring\u003c/code\u003e or \u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e; any value accepted as \u003ccode\u003ex\u003c/code\u003e in \u003ccode\u003enew VFile(x)\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-5\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-5\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe processed file (\u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe parsed, transformed, and compiled value is available at \u003ccode\u003efile.value\u003c/code\u003e (see\nnote).\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: unified typically compiles by serializing: most\ncompilers return \u003ccode\u003estring\u003c/code\u003e (or \u003ccode\u003eUint8Array\u003c/code\u003e).\nSome compilers, such as the one configured with\n\u003ca href=\"https://github.com/rehypejs/rehype-react\"\u003e\u003ccode\u003erehype-react\u003c/code\u003e\u003c/a\u003e, return other values (in this case, a React\ntree).\nIf you’re using a compiler that doesn’t serialize, expect different result\nvalues.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo register custom results in TypeScript, add them to\n\u003ca href=\"#compileresultmap\"\u003e\u003ccode\u003eCompileResultMap\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-5\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-5\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example shows how \u003ccode\u003eprocessSync\u003c/code\u003e can be used to process a file, if all\ntransformers are synchronous.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import rehypeDocument from 'rehype-document'\nimport rehypeFormat from 'rehype-format'\nimport rehypeStringify from 'rehype-stringify'\nimport remarkParse from 'remark-parse'\nimport remarkRehype from 'remark-rehype'\nimport {unified} from 'unified'\n\nconst processor = unified()\n .use(remarkParse)\n .use(remarkRehype)\n .use(rehypeDocument, {title: '👋🌍'})\n .use(rehypeFormat)\n .use(rehypeStringify)\n\nconsole.log(String(processor.processSync('# Hello world!')))\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeDocument\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-document'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-format'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-stringify'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-parse'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-rehype'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eprocessor\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeDocument\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003etitle\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'👋🌍'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeFormat\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003elog\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eString\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eprocessor\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eprocessSync\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'# Hello world!'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;!doctype html\u0026gt;\n\u0026lt;html lang=\u0026quot;en\u0026quot;\u0026gt;\n \u0026lt;head\u0026gt;\n \u0026lt;meta charset=\u0026quot;utf-8\u0026quot;\u0026gt;\n \u0026lt;title\u0026gt;👋🌍\u0026lt;/title\u0026gt;\n \u0026lt;meta name=\u0026quot;viewport\u0026quot; content=\u0026quot;width=device-width, initial-scale=1\u0026quot;\u0026gt;\n \u0026lt;/head\u0026gt;\n \u0026lt;body\u0026gt;\n \u0026lt;h1\u0026gt;Hello world!\u0026lt;/h1\u0026gt;\n \u0026lt;/body\u0026gt;\n\u0026lt;/html\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;!doctype html\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehtml\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003elang\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003een\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehead\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003emeta\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003echarset\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003eutf-8\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003etitle\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e👋🌍\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003etitle\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003emeta\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003ename\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003eviewport\u003c/span\u003e\" \u003cspan class=\"pl-c1\"\u003econtent\u003c/span\u003e=\"\u003cspan class=\"pl-s\"\u003ewidth=device-width, initial-scale=1\u003c/span\u003e\"\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehead\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ebody\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003eHello world!\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ebody\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003ehtml\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.run(tree[, file][, done])\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorruntree-file-done\" class=\"anchor\" aria-label=\"Permalink: processor.run(tree[, file][, done])\" href=\"#processorruntree-file-done\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eRun \u003cem\u003e\u003ca href=\"#transformer\"\u003etransformers\u003c/a\u003e\u003c/em\u003e on a syntax tree.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003erun\u003c/code\u003e freezes the processor if not already\n\u003cem\u003e\u003ca href=\"#processorfreeze\"\u003efrozen\u003c/a\u003e\u003c/em\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003erun\u003c/code\u003e performs the \u003ca href=\"#overview\"\u003erun phase\u003c/a\u003e, not other phases.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSignatures\u003c/h6\u003e\u003ca id=\"user-content-signatures-2\" class=\"anchor\" aria-label=\"Permalink: Signatures\" href=\"#signatures-2\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eprocessor.run(tree, done)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eprocessor.run(tree, file, done)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ePromise\u0026lt;Node\u0026gt; = processor.run(tree, file?)\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-4\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-4\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etree\u003c/code\u003e (\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e) — tree to transform and inspect\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile#compatible\"\u003e\u003ccode\u003eCompatible\u003c/code\u003e\u003c/a\u003e, optional) — file associated\nwith \u003ccode\u003enode\u003c/code\u003e; any value accepted as \u003ccode\u003ex\u003c/code\u003e in \u003ccode\u003enew VFile(x)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003edone\u003c/code\u003e (\u003ca href=\"#runcallback\"\u003e\u003ccode\u003eRunCallback\u003c/code\u003e\u003c/a\u003e, optional) — callback\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-6\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-6\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eNothing if \u003ccode\u003edone\u003c/code\u003e is given (\u003ccode\u003eundefined\u003c/code\u003e).\nOtherwise, a promise rejected with a fatal error or resolved with the\ntransformed tree (\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003ePromise\u0026lt;Node\u0026gt;\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-6\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-6\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example shows how \u003ccode\u003erun\u003c/code\u003e can be used to transform a tree:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import remarkReferenceLinks from 'remark-reference-links'\nimport {unified} from 'unified'\nimport {u} from 'unist-builder'\n\nconst tree = u('root', [\n u('paragraph', [\n u('link', {href: 'https://example.com'}, [u('text', 'Example Domain')])\n ])\n])\n\nconst changedTree = await unified().use(remarkReferenceLinks).run(tree)\n\nconsole.log(changedTree)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkReferenceLinks\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-reference-links'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eu\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unist-builder'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eu\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'root'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\n \u003cspan class=\"pl-en\"\u003eu\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'paragraph'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\n \u003cspan class=\"pl-en\"\u003eu\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'link'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003ehref\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'https://example.com'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eu\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'text'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'Example Domain'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003echangedTree\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkReferenceLinks\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003erun\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003elog\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003echangedTree\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"{\n type: 'root',\n children: [\n {type: 'paragraph', children: [Array]},\n {type: 'definition', identifier: '1', title: '', url: undefined}\n ]\n}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003etype\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'root'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003echildren\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003etype\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'paragraph'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003echildren\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eArray\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003etype\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'definition'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eidentifier\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'1'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003etitle\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e''\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eurl\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.runSync(tree[, file])\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorrunsynctree-file\" class=\"anchor\" aria-label=\"Permalink: processor.runSync(tree[, file])\" href=\"#processorrunsynctree-file\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eRun \u003cem\u003e\u003ca href=\"#transformer\"\u003etransformers\u003c/a\u003e\u003c/em\u003e on a syntax tree.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAn error is thrown if asynchronous transforms are configured.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003erunSync\u003c/code\u003e freezes the processor if not already\n\u003cem\u003e\u003ca href=\"#processorfreeze\"\u003efrozen\u003c/a\u003e\u003c/em\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003erunSync\u003c/code\u003e performs the \u003ca href=\"#overview\"\u003erun phase\u003c/a\u003e, not other phases.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-5\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-5\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etree\u003c/code\u003e (\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e) — tree to transform and inspect\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile#compatible\"\u003e\u003ccode\u003eCompatible\u003c/code\u003e\u003c/a\u003e, optional) — file associated\nwith \u003ccode\u003enode\u003c/code\u003e; any value accepted as \u003ccode\u003ex\u003c/code\u003e in \u003ccode\u003enew VFile(x)\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-7\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-7\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTransformed tree (\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.stringify(tree[, file])\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processorstringifytree-file\" class=\"anchor\" aria-label=\"Permalink: processor.stringify(tree[, file])\" href=\"#processorstringifytree-file\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCompile a syntax tree.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003estringify\u003c/code\u003e freezes the processor if not already\n\u003cem\u003e\u003ca href=\"#processorfreeze\"\u003efrozen\u003c/a\u003e\u003c/em\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003estringify\u003c/code\u003e performs the \u003ca href=\"#overview\"\u003estringify phase\u003c/a\u003e, not the run\nphase or other phases.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-6\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-6\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003etree\u003c/code\u003e (\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e) — tree to compile\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile#compatible\"\u003e\u003ccode\u003eCompatible\u003c/code\u003e\u003c/a\u003e, optional) — file associated\nwith \u003ccode\u003enode\u003c/code\u003e; any value accepted as \u003ccode\u003ex\u003c/code\u003e in \u003ccode\u003enew VFile(x)\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-8\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-8\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTextual representation of the tree (\u003ccode\u003eUint8Array\u003c/code\u003e or \u003ccode\u003estring\u003c/code\u003e, see note).\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: unified typically compiles by serializing: most compilers\nreturn \u003ccode\u003estring\u003c/code\u003e (or \u003ccode\u003eUint8Array\u003c/code\u003e).\nSome compilers, such as the one configured with\n\u003ca href=\"https://github.com/rehypejs/rehype-react\"\u003e\u003ccode\u003erehype-react\u003c/code\u003e\u003c/a\u003e, return other values (in this case, a\nReact tree).\nIf you’re using a compiler that doesn’t serialize, expect different\nresult values.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo register custom results in TypeScript, add them to\n\u003ca href=\"#compileresultmap\"\u003e\u003ccode\u003eCompileResultMap\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-7\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-7\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example shows how \u003ccode\u003estringify\u003c/code\u003e can be used to serialize a syntax tree:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import {h} from 'hastscript'\nimport rehypeStringify from 'rehype-stringify'\nimport {unified} from 'unified'\n\nconst tree = h('h1', 'Hello world!')\n\nconst document = unified().use(rehypeStringify).stringify(tree)\n\nconsole.log(document)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eh\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'hastscript'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-stringify'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eh\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'h1'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'Hello world!'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003edocument\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003estringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003elog\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003edocument\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;h1\u0026gt;Hello world!\u0026lt;/h1\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003eHello world!\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eprocessor.use(plugin[, options])\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processoruseplugin-options\" class=\"anchor\" aria-label=\"Permalink: processor.use(plugin[, options])\" href=\"#processoruseplugin-options\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eConfigure the processor to use a plugin, a list of usable values, or a preset.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIf the processor is already using a plugin, the previous plugin configuration\nis changed based on the options that are passed in.\nIn other words, the plugin is not added a second time.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: \u003ccode\u003euse\u003c/code\u003e cannot be called on \u003ca href=\"#processorfreeze\"\u003e\u003cem\u003efrozen\u003c/em\u003e\u003c/a\u003e processors.\nCall the processor first to create a new unfrozen processor.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSignatures\u003c/h6\u003e\u003ca id=\"user-content-signatures-3\" class=\"anchor\" aria-label=\"Permalink: Signatures\" href=\"#signatures-3\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eprocessor.use(preset?)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eprocessor.use(list)\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eprocessor.use(plugin[, ...parameters])\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-7\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-7\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003epreset\u003c/code\u003e (\u003ca href=\"#preset\"\u003e\u003ccode\u003ePreset\u003c/code\u003e\u003c/a\u003e) — plugins and settings\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003elist\u003c/code\u003e (\u003ca href=\"#pluggablelist\"\u003e\u003ccode\u003ePluggableList\u003c/code\u003e\u003c/a\u003e) — list of usable things\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eplugin\u003c/code\u003e (\u003ca href=\"#plugin\"\u003e\u003ccode\u003ePlugin\u003c/code\u003e\u003c/a\u003e) — plugin\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eparameters\u003c/code\u003e (\u003ccode\u003eArray\u0026lt;unknown\u0026gt;\u003c/code\u003e) — configuration for \u003ccode\u003eplugin\u003c/code\u003e, typically a\nsingle options object\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-9\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-9\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCurrent processor (\u003ca href=\"#processor\"\u003e\u003ccode\u003eprocessor\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-8\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-8\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThere are many ways to pass plugins to \u003ccode\u003e.use()\u003c/code\u003e.\nThis example gives an overview:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import {unified} from 'unified'\n\nunified()\n // Plugin with options:\n .use(pluginA, {x: true, y: true})\n // Passing the same plugin again merges configuration (to `{x: true, y: false, z: true}`):\n .use(pluginA, {y: false, z: true})\n // Plugins:\n .use([pluginB, pluginC])\n // Two plugins, the second with options:\n .use([pluginD, [pluginE, {}]])\n // Preset with plugins and settings:\n .use({plugins: [pluginF, [pluginG, {}]], settings: {position: false}})\n // Settings only:\n .use({settings: {position: false}})\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\n\u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Plugin with options:\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003epluginA\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003ex\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003etrue\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003ey\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003etrue\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Passing the same plugin again merges configuration (to `{x: true, y: false, z: true}`):\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003epluginA\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003ey\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003efalse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003ez\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003etrue\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Plugins:\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003epluginB\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003epluginC\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Two plugins, the second with options:\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003epluginD\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003epluginE\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Preset with plugins and settings:\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eplugins\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003epluginF\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003epluginG\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003esettings\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eposition\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003efalse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Settings only:\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003esettings\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eposition\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003efalse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eCompileResultMap\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-compileresultmap\" class=\"anchor\" aria-label=\"Permalink: CompileResultMap\" href=\"#compileresultmap\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eInterface of known results from compilers (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eNormally, compilers result in text (\u003ca href=\"https://github.com/vfile/vfile#value\"\u003e\u003ccode\u003eValue\u003c/code\u003e\u003c/a\u003e of \u003ccode\u003evfile\u003c/code\u003e).\nWhen you compile to something else, such as a React node (as in,\n\u003ccode\u003erehype-react\u003c/code\u003e), you can augment this interface to include that type.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import type {ReactNode} from 'somewhere'\n\ndeclare module 'unified' {\n interface CompileResultMap {\n // Register a new result (value is used, key should match it).\n ReactNode: ReactNode\n }\n}\n\nexport {} // You may not need this, but it makes sure the file is a module.\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eReactNode\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'somewhere'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003edeclare\u003c/span\u003e module \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003einterface\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompileResultMap\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Register a new result (value is used, key should match it).\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003eReactNode\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eReactNode\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// You may not need this, but it makes sure the file is a module.\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eUse \u003ca href=\"#compileresults\"\u003e\u003ccode\u003eCompileResults\u003c/code\u003e\u003c/a\u003e to access the values.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"interface CompileResultMap {\n // Note: if `Value` from `VFile` is changed, this should too.\n Uint8Array: Uint8Array\n string: string\n}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003einterface\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompileResultMap\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Note: if `Value` from `VFile` is changed, this should too.\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003eUint8Array\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eUint8Array\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003estring\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003estring\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eCompileResults\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-compileresults\" class=\"anchor\" aria-label=\"Permalink: CompileResults\" href=\"#compileresults\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAcceptable results from compilers (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo register custom results, add them to\n\u003ca href=\"#compileresultmap\"\u003e\u003ccode\u003eCompileResultMap\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-1\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-1\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"type CompileResults = CompileResultMap[keyof CompileResultMap]\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompileResults\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompileResultMap\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-k\"\u003ekeyof\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompileResultMap\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eCompiler\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-compiler\" class=\"anchor\" aria-label=\"Permalink: Compiler\" href=\"#compiler\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eA \u003cstrong\u003ecompiler\u003c/strong\u003e handles the compiling of a syntax tree to something else\n(in most cases, text) (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIt is used in the stringify phase and called with a \u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e\nand \u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e representation of the document to compile.\nIt should return the textual representation of the given tree (typically\n\u003ccode\u003estring\u003c/code\u003e).\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: unified typically compiles by serializing: most compilers\nreturn \u003ccode\u003estring\u003c/code\u003e (or \u003ccode\u003eUint8Array\u003c/code\u003e).\nSome compilers, such as the one configured with\n\u003ca href=\"https://github.com/rehypejs/rehype-react\"\u003e\u003ccode\u003erehype-react\u003c/code\u003e\u003c/a\u003e, return other values (in this case, a\nReact tree).\nIf you’re using a compiler that doesn’t serialize, expect different\nresult values.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo register custom results in TypeScript, add them to\n\u003ca href=\"#compileresultmap\"\u003e\u003ccode\u003eCompileResultMap\u003c/code\u003e\u003c/a\u003e.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-2\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-2\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"type Compiler\u0026lt;\n Tree extends Node = Node,\n Result extends CompileResults = CompileResults\n\u0026gt; = (tree: Tree, file: VFile) =\u0026gt; Result\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompiler\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eTree\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eResult\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompileResults\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompileResults\u003c/span\u003e\n\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eTree\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eVFile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eResult\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eData\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-data\" class=\"anchor\" aria-label=\"Permalink: Data\" href=\"#data\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eInterface of known data that can be supported by all plugins (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTypically, options can be given to a specific plugin, but sometimes it makes\nsense to have information shared with several plugins.\nFor example, a list of HTML elements that are self-closing, which is needed\nduring all phases.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo type this, do something like:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"declare module 'unified' {\n interface Data {\n htmlVoidElements?: Array\u0026lt;string\u0026gt; | undefined\n }\n}\n\nexport {} // You may not need this, but it makes sure the file is a module.\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003edeclare\u003c/span\u003e module \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003einterface\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eData\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003ehtmlVoidElements\u003c/span\u003e?: \u003cspan class=\"pl-smi\"\u003eArray\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003estring\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// You may not need this, but it makes sure the file is a module.\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-3\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-3\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"interface Data {\n settings?: Settings | undefined\n}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003einterface\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eData\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003esettings\u003c/span\u003e?: \u003cspan class=\"pl-smi\"\u003eSettings\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSee \u003ca href=\"#settings\"\u003e\u003ccode\u003eSettings\u003c/code\u003e\u003c/a\u003e for more info.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eParser\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-parser\" class=\"anchor\" aria-label=\"Permalink: Parser\" href=\"#parser\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eA \u003cstrong\u003eparser\u003c/strong\u003e handles the parsing of text to a syntax tree (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIt is used in the parse phase and is called with a \u003ccode\u003estring\u003c/code\u003e and\n\u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e of the document to parse.\nIt must return the syntax tree representation of the given file\n(\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-4\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-4\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"type Parser\u0026lt;Tree extends Node = Node\u0026gt; = (document: string, file: VFile) =\u0026gt; Tree\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eParser\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003eTree\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003edocument\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003estring\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eVFile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eTree\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003ePluggable\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-pluggable\" class=\"anchor\" aria-label=\"Permalink: Pluggable\" href=\"#pluggable\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eUnion of the different ways to add plugins and settings (TypeScript type).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-5\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-5\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"type Pluggable =\n | Plugin\u0026lt;Array\u0026lt;any\u0026gt;, any, any\u0026gt;\n | PluginTuple\u0026lt;Array\u0026lt;any\u0026gt;, any, any\u0026gt;\n | Preset\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ePluggable\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ePlugin\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003eArray\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003eany\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eany\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eany\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ePluginTuple\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003eArray\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003eany\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eany\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eany\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ePreset\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSee \u003ca href=\"#plugin\"\u003e\u003ccode\u003ePlugin\u003c/code\u003e\u003c/a\u003e, \u003ca href=\"#plugintuple\"\u003e\u003ccode\u003ePluginTuple\u003c/code\u003e\u003c/a\u003e,\nand \u003ca href=\"#preset\"\u003e\u003ccode\u003ePreset\u003c/code\u003e\u003c/a\u003e for more info.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003ePluggableList\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-pluggablelist\" class=\"anchor\" aria-label=\"Permalink: PluggableList\" href=\"#pluggablelist\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eList of plugins and presets (TypeScript type).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-6\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-6\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"type PluggableList = Array\u0026lt;Pluggable\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ePluggableList\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eArray\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003ePluggable\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSee \u003ca href=\"#pluggable\"\u003e\u003ccode\u003ePluggable\u003c/code\u003e\u003c/a\u003e for more info.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003ePlugin\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-plugin\" class=\"anchor\" aria-label=\"Permalink: Plugin\" href=\"#plugin\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSingle plugin (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003ePlugins configure the processors they are applied on in the following ways:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003ethey change the processor, such as the parser, the compiler, or by\nconfiguring data\u003c/li\u003e\n\u003cli\u003ethey specify how to handle trees and files\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eIn practice, they are functions that can receive options and configure the\nprocessor (\u003ccode\u003ethis\u003c/code\u003e).\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: plugins are called when the processor is \u003cem\u003efrozen\u003c/em\u003e, not when they\nare applied.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-7\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-7\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"type Plugin\u0026lt;\n PluginParameters extends unknown[] = [],\n Input extends Node | string | undefined = Node,\n Output = Input\n\u0026gt; = (\n this: Processor,\n ...parameters: PluginParameters\n) =\u0026gt; Input extends string // Parser.\n ? Output extends Node | undefined\n ? undefined | void\n : never\n : Output extends CompileResults // Compiler.\n ? Input extends Node | undefined\n ? undefined | void\n : never\n : // Inspect/transform.\n | Transformer\u0026lt;\n Input extends Node ? Input : Node,\n Output extends Node ? Output : Node\n \u0026gt;\n | undefined\n | void\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ePlugin\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003ePluginParameters\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eunknown\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003estring\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e\n\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003ethis\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eProcessor\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n ...\u003cspan class=\"pl-s1\"\u003eparameters\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003ePluginParameters\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003estring\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// Parser.\u003c/span\u003e\n ? \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\n ? \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003e\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e\u003c/span\u003e\n : \u003cspan class=\"pl-smi\"\u003enever\u003c/span\u003e\n : \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eCompileResults\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// Compiler.\u003c/span\u003e\n ? \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\n ? \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003e\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e\u003c/span\u003e\n : \u003cspan class=\"pl-smi\"\u003enever\u003c/span\u003e\n : \u003cspan class=\"pl-c\"\u003e// Inspect/transform.\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eTransformer\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e ? \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e : \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e ? \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e : \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003e\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSee \u003ca href=\"#transformer\"\u003e\u003ccode\u003eTransformer\u003c/code\u003e\u003c/a\u003e for more info.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-9\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-9\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003emove.js\u003c/code\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"/**\n * @import {Plugin} from 'unified'\n */\n\n/**\n * @typedef Options\n * Configuration (required).\n * @property {string} extname\n * File extension to use (must start with `.`).\n */\n\n/** @type {Plugin\u0026lt;[Options]\u0026gt;} */\nexport function move(options) {\n if (!options || !options.extname) {\n throw new Error('Missing `options.extname`')\n }\n\n return function (_, file) {\n if (file.extname \u0026amp;\u0026amp; file.extname !== options.extname) {\n file.extname = options.extname\n }\n }\n}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e/**\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@import\u003c/span\u003e {Plugin} from 'unified'\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e */\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e/**\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@typedef\u003c/span\u003e Options\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * Configuration (required).\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@property\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003estring\u003c/span\u003e} extname\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * File extension to use (must start with `.`).\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e */\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e/** \u003cspan class=\"pl-k\"\u003e@type\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003ePlugin\u0026lt;[Options]\u0026gt;\u003c/span\u003e} */\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-en\"\u003emove\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003eif\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e!\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e||\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e!\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eextname\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003ethrow\u003c/span\u003e \u003cspan class=\"pl-k\"\u003enew\u003c/span\u003e \u003cspan class=\"pl-v\"\u003eError\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'Missing `options.extname`'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n \u003cspan class=\"pl-k\"\u003ereturn\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003e_\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003eif\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eextname\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e\u0026amp;\u0026amp;\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eextname\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e!==\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eextname\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eextname\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eextname\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eexample.md\u003c/code\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-md notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"# Hello, world!\"\u003e\u003cpre\u003e\u003cspan class=\"pl-mh\"\u003e# \u003cspan class=\"pl-en\"\u003eHello, world!\u003c/span\u003e\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eexample.js\u003c/code\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import rehypeStringify from 'rehype-stringify'\nimport remarkParse from 'remark-parse'\nimport remarkRehype from 'remark-rehype'\nimport {read, write} from 'to-vfile'\nimport {unified} from 'unified'\nimport {reporter} from 'vfile-reporter'\nimport {move} from './move.js'\n\nconst file = await unified()\n .use(remarkParse)\n .use(remarkRehype)\n .use(move, {extname: '.html'})\n .use(rehypeStringify)\n .process(await read('example.md'))\n\nconsole.error(reporter(file))\nawait write(file) // Written to `example.html`.\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'rehype-stringify'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-parse'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-rehype'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eread\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003ewrite\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'to-vfile'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'vfile-reporter'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003emove\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'./move.js'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkRehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003emove\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003eextname\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'.html'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eprocess\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eread\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'example.md'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eerror\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-en\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003ewrite\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// Written to `example.html`.\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-adblock notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"example.md: no issues found\"\u003e\u003cpre\u003eexample.md: no issues found\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e…and in \u003ccode\u003eexample.html\u003c/code\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-html-basic notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"\u0026lt;h1\u0026gt;Hello, world!\u0026lt;/h1\u0026gt;\"\u003e\u003cpre\u003e\u003cspan class=\"pl-kos\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003eHello, world!\u003cspan class=\"pl-kos\"\u003e\u0026lt;/\u003c/span\u003e\u003cspan class=\"pl-ent\"\u003eh1\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e\u0026gt;\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003ePluginTuple\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-plugintuple\" class=\"anchor\" aria-label=\"Permalink: PluginTuple\" href=\"#plugintuple\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTuple of a plugin and its configuration (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe first item is a plugin, the rest are its parameters.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-8\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-8\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"type PluginTuple\u0026lt;\n TupleParameters extends unknown[] = [],\n Input extends Node | string | undefined = undefined,\n Output = undefined\n\u0026gt; = [\n plugin: Plugin\u0026lt;TupleParameters, Input, Output\u0026gt;,\n ...parameters: TupleParameters\n]\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ePluginTuple\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eTupleParameters\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eunknown\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003estring\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\n\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003eplugin\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003ePlugin\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003eTupleParameters\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n ...\u003cspan class=\"pl-s1\"\u003eparameters\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eTupleParameters\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSee \u003ca href=\"#plugin\"\u003e\u003ccode\u003ePlugin\u003c/code\u003e\u003c/a\u003e for more info.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003ePreset\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-preset\" class=\"anchor\" aria-label=\"Permalink: Preset\" href=\"#preset\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSharable configuration (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThey can contain plugins and settings.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFields\u003c/h6\u003e\u003ca id=\"user-content-fields\" class=\"anchor\" aria-label=\"Permalink: Fields\" href=\"#fields\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eplugins\u003c/code\u003e (\u003ca href=\"#pluggablelist\"\u003e\u003ccode\u003ePluggableList\u003c/code\u003e\u003c/a\u003e, optional)\n— list of plugins and presets\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esettings\u003c/code\u003e (\u003ca href=\"#data\"\u003e\u003ccode\u003eData\u003c/code\u003e\u003c/a\u003e, optional)\n— shared settings for parsers and compilers\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-10\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-10\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003epreset.js\u003c/code\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"/**\n * @import {Preset} from 'unified'\n */\n\nimport remarkCommentConfig from 'remark-comment-config'\nimport remarkLicense from 'remark-license'\nimport remarkPresetLintConsistent from 'remark-preset-lint-consistent'\nimport remarkPresetLintRecommended from 'remark-preset-lint-recommended'\nimport remarkToc from 'remark-toc'\n\n/** @type {Preset} */\nconst preset = {\n plugins: [\n remarkPresetLintRecommended,\n remarkPresetLintConsistent,\n remarkCommentConfig,\n [remarkToc, {maxDepth: 3, tight: true}],\n remarkLicense\n ],\n settings: {bullet: '*', emphasis: '*', fences: true},\n}\n\nexport default preset\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e/**\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@import\u003c/span\u003e {Preset} from 'unified'\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e */\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkCommentConfig\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-comment-config'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkLicense\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-license'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkPresetLintConsistent\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-preset-lint-consistent'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkPresetLintRecommended\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-preset-lint-recommended'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkToc\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-toc'\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e/** \u003cspan class=\"pl-k\"\u003e@type\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003ePreset\u003c/span\u003e} */\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003epreset\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003eplugins\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003eremarkPresetLintRecommended\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003eremarkPresetLintConsistent\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003eremarkCommentConfig\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkToc\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003emaxDepth\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003e3\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003etight\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003etrue\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003eremarkLicense\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003esettings\u003c/span\u003e: \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003ebullet\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'*'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eemphasis\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'*'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003efences\u003c/span\u003e: \u003cspan class=\"pl-c1\"\u003etrue\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003edefault\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003epreset\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eexample.md\u003c/code\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-md notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"# Hello, world!\n\n_Emphasis_ and **importance**.\n\n## Table of contents\n\n## API\n\n## License\"\u003e\u003cpre\u003e\u003cspan class=\"pl-mh\"\u003e# \u003cspan class=\"pl-en\"\u003eHello, world!\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-s\"\u003e_\u003c/span\u003eEmphasis\u003cspan class=\"pl-s\"\u003e_\u003c/span\u003e and \u003cspan class=\"pl-s\"\u003e**\u003c/span\u003eimportance\u003cspan class=\"pl-s\"\u003e**\u003c/span\u003e.\n\n\u003cspan class=\"pl-mh\"\u003e## \u003cspan class=\"pl-en\"\u003eTable of contents\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-mh\"\u003e## \u003cspan class=\"pl-en\"\u003eAPI\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-mh\"\u003e## \u003cspan class=\"pl-en\"\u003eLicense\u003c/span\u003e\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eexample.js\u003c/code\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import {remark} from 'remark'\nimport {read, write} from 'to-vfile'\nimport {reporter} from 'vfile-reporter'\nimport preset from './preset.js'\n\nconst file = await remark()\n .use(preset)\n .process(await read('example.md'))\n\nconsole.error(reporter(file))\nawait write(file)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremark\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eread\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003ewrite\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'to-vfile'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'vfile-reporter'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003epreset\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'./preset.js'\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eremark\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003epreset\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eprocess\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eread\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'example.md'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eerror\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-en\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eawait\u003c/span\u003e \u003cspan class=\"pl-en\"\u003ewrite\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-adblock notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"example.md: no issues found\"\u003e\u003cpre\u003eexample.md: no issues found\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eexample.md\u003c/code\u003e now contains:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-md notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"# Hello, world!\n\n*Emphasis* and **importance**.\n\n## Table of contents\n\n* [API](#api)\n* [License](#license)\n\n## API\n\n## License\n\n[MIT](license) © [Titus Wormer](https://wooorm.com)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-mh\"\u003e# \u003cspan class=\"pl-en\"\u003eHello, world!\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-s\"\u003e*\u003c/span\u003eEmphasis\u003cspan class=\"pl-s\"\u003e*\u003c/span\u003e and \u003cspan class=\"pl-s\"\u003e**\u003c/span\u003eimportance\u003cspan class=\"pl-s\"\u003e**\u003c/span\u003e.\n\n\u003cspan class=\"pl-mh\"\u003e## \u003cspan class=\"pl-en\"\u003eTable of contents\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-v\"\u003e*\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e[\u003c/span\u003eAPI\u003cspan class=\"pl-s\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-corl\"\u003e#api\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e)\u003c/span\u003e\n\u003cspan class=\"pl-v\"\u003e*\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e[\u003c/span\u003eLicense\u003cspan class=\"pl-s\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-corl\"\u003e#license\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e)\u003c/span\u003e\n\n\u003cspan class=\"pl-mh\"\u003e## \u003cspan class=\"pl-en\"\u003eAPI\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-mh\"\u003e## \u003cspan class=\"pl-en\"\u003eLicense\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-s\"\u003e[\u003c/span\u003eMIT\u003cspan class=\"pl-s\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-corl\"\u003elicense\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e)\u003c/span\u003e © \u003cspan class=\"pl-s\"\u003e[\u003c/span\u003eTitus Wormer\u003cspan class=\"pl-s\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-corl\"\u003ehttps://wooorm.com\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eProcessCallback\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processcallback\" class=\"anchor\" aria-label=\"Permalink: ProcessCallback\" href=\"#processcallback\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCallback called when the process is done (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eCalled with either an error or a result.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-8\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-8\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eerror\u003c/code\u003e (\u003ccode\u003eError\u003c/code\u003e, optional)\n— fatal error\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e, optional)\n— processed file\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-10\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-10\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eNothing (\u003ccode\u003eundefined\u003c/code\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h6\u003e\u003ca id=\"user-content-example-11\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example-11\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis example shows how \u003ccode\u003eprocess\u003c/code\u003e can be used to process a file with a callback.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"import remarkGithub from 'remark-github'\nimport remarkParse from 'remark-parse'\nimport remarkStringify from 'remark-stringify'\nimport {unified} from 'unified'\nimport {reporter} from 'vfile-reporter'\n\nunified()\n .use(remarkParse)\n .use(remarkGithub)\n .use(remarkStringify)\n .process('@unifiedjs', function (error, file) {\n if (error) throw error\n if (file) {\n console.error(reporter(file))\n console.log(String(file))\n }\n })\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkGithub\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-github'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-parse'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eremarkStringify\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'remark-stringify'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eimport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efrom\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'vfile-reporter'\u003c/span\u003e\n\n\u003cspan class=\"pl-en\"\u003eunified\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkGithub\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003euse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eremarkStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eprocess\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e'@unifiedjs'\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eerror\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003eif\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eerror\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-k\"\u003ethrow\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eerror\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003eif\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003eerror\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-en\"\u003ereporter\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003econsole\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e.\u003c/span\u003e\u003cspan class=\"pl-en\"\u003elog\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-v\"\u003eString\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYields:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-text-adblock notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"no issues found\"\u003e\u003cpre\u003eno issues found\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-text-md notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"[**@unifiedjs**](https://github.com/unifiedjs)\"\u003e\u003cpre\u003e\u003cspan class=\"pl-s\"\u003e[\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e**\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e@\u003cspan class=\"pl-corl\"\u003eunifiedjs\u003c/span\u003e\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e**\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e]\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-corl\"\u003ehttps://github.com/unifiedjs\u003c/span\u003e\u003cspan class=\"pl-s\"\u003e)\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eProcessor\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-processor-1\" class=\"anchor\" aria-label=\"Permalink: Processor\" href=\"#processor-1\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eType of a \u003ca href=\"#processor\"\u003e\u003ccode\u003eprocessor\u003c/code\u003e\u003c/a\u003e (TypeScript type).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eRunCallback\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-runcallback\" class=\"anchor\" aria-label=\"Permalink: RunCallback\" href=\"#runcallback\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCallback called when transformers are done (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eCalled with either an error or results.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-9\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-9\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eerror\u003c/code\u003e (\u003ccode\u003eError\u003c/code\u003e, optional)\n— fatal error\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etree\u003c/code\u003e (\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e, optional)\n— transformed tree\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e, optional)\n— file\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-11\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-11\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eNothing (\u003ccode\u003eundefined\u003c/code\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eSettings\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-settings\" class=\"anchor\" aria-label=\"Permalink: Settings\" href=\"#settings\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eInterface of known extra options, that can be supported by parser and\ncompilers.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThis exists so that users can use packages such as \u003ccode\u003eremark\u003c/code\u003e, which configure\nboth parsers and compilers (in this case \u003ccode\u003eremark-parse\u003c/code\u003e and\n\u003ccode\u003eremark-stringify\u003c/code\u003e), and still provide options for them.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWhen you make parsers or compilers, that could be packaged up together, you\nshould support \u003ccode\u003ethis.data('settings')\u003c/code\u003e as input and merge it with explicitly\npassed \u003ccode\u003eoptions\u003c/code\u003e.\nThen, to type it, using \u003ccode\u003eremark-stringify\u003c/code\u003e as an example, do something like:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"declare module 'unified' {\n interface Settings {\n bullet: '*' | '+' | '-'\n // …\n }\n}\n\nexport {} // You may not need this, but it makes sure the file is a module.\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003edeclare\u003c/span\u003e module \u003cspan class=\"pl-s\"\u003e'unified'\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003einterface\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eSettings\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003ebullet\u003c/span\u003e: \u003cspan class=\"pl-s\"\u003e'*'\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'+'\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e'-'\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// …\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e \u003cspan class=\"pl-c\"\u003e// You may not need this, but it makes sure the file is a module.\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-9\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-9\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"interface Settings {}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003einterface\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eSettings\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eTransformCallback\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-transformcallback\" class=\"anchor\" aria-label=\"Permalink: TransformCallback\" href=\"#transformcallback\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCallback passed to transforms (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIf the signature of a \u003ccode\u003etransformer\u003c/code\u003e accepts a third argument, the transformer\nmay perform asynchronous operations, and must call it.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParameters\u003c/h6\u003e\u003ca id=\"user-content-parameters-10\" class=\"anchor\" aria-label=\"Permalink: Parameters\" href=\"#parameters-10\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eerror\u003c/code\u003e (\u003ccode\u003eError\u003c/code\u003e, optional)\n— fatal error to stop the process\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003etree\u003c/code\u003e (\u003ca href=\"https://github.com/syntax-tree/unist#node\"\u003e\u003ccode\u003eNode\u003c/code\u003e\u003c/a\u003e, optional)\n— new, changed, tree\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003efile\u003c/code\u003e (\u003ca href=\"https://github.com/vfile/vfile\"\u003e\u003ccode\u003eVFile\u003c/code\u003e\u003c/a\u003e, optional)\n— new, changed, file\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReturns\u003c/h6\u003e\u003ca id=\"user-content-returns-12\" class=\"anchor\" aria-label=\"Permalink: Returns\" href=\"#returns-12\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eNothing (\u003ccode\u003eundefined\u003c/code\u003e).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003e\u003ccode\u003eTransformer\u003c/code\u003e\u003c/h3\u003e\u003ca id=\"user-content-transformer\" class=\"anchor\" aria-label=\"Permalink: Transformer\" href=\"#transformer\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTransformers handle syntax trees and files (TypeScript type).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThey are functions that are called each time a syntax tree and file are\npassed through the run phase.\nWhen an error occurs in them (either because it’s thrown, returned,\nrejected, or passed to \u003ccode\u003enext\u003c/code\u003e), the process stops.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe run phase is handled by \u003ca href=\"https://github.com/wooorm/trough#function-fninput-next\"\u003e\u003ccode\u003etrough\u003c/code\u003e\u003c/a\u003e, see its documentation for\nthe exact semantics of these functions.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003e👉 \u003cstrong\u003eNote\u003c/strong\u003e: you should likely ignore \u003ccode\u003enext\u003c/code\u003e: don’t accept it.\nit supports callback-style async work.\nBut promises are likely easier to reason about.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch6 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eType\u003c/h6\u003e\u003ca id=\"user-content-type-10\" class=\"anchor\" aria-label=\"Permalink: Type\" href=\"#type-10\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-ts notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"type Transformer\u0026lt;\n Input extends Node = Node,\n Output extends Node = Input\n\u0026gt; = (\n tree: Input,\n file: VFile,\n next: TransformCallback\u0026lt;Output\u0026gt;\n) =\u0026gt;\n | Promise\u0026lt;Output | undefined\u0026gt;\n | Output\n | Error\n | undefined\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003etype\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eTransformer\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eextends\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eNode\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e\n\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eInput\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eVFile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e\n \u003cspan class=\"pl-s1\"\u003enext\u003c/span\u003e: \u003cspan class=\"pl-smi\"\u003eTransformCallback\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003ePromise\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026lt;\u003c/span\u003e\u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\u003cspan class=\"pl-c1\"\u003e\u0026gt;\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eOutput\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-smi\"\u003eError\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003e|\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003eundefined\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTypes\u003c/h2\u003e\u003ca id=\"user-content-types\" class=\"anchor\" aria-label=\"Permalink: Types\" href=\"#types\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis package is fully typed with \u003ca href=\"https://www.typescriptlang.org\" rel=\"nofollow\"\u003eTypeScript\u003c/a\u003e.\nIt exports the additional types\n\u003ca href=\"#compileresultmap\"\u003e\u003ccode\u003eCompileResultMap\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#compileresults\"\u003e\u003ccode\u003eCompileResults\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#compiler\"\u003e\u003ccode\u003eCompiler\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#data\"\u003e\u003ccode\u003eData\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#parser\"\u003e\u003ccode\u003eParser\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#pluggable\"\u003e\u003ccode\u003ePluggable\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#pluggablelist\"\u003e\u003ccode\u003ePluggableList\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#plugin\"\u003e\u003ccode\u003ePlugin\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#plugintuple\"\u003e\u003ccode\u003ePluginTuple\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#preset\"\u003e\u003ccode\u003ePreset\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#processcallback\"\u003e\u003ccode\u003eProcessCallback\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#processor\"\u003e\u003ccode\u003eProcessor\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#runcallback\"\u003e\u003ccode\u003eRunCallback\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#settings\"\u003e\u003ccode\u003eSettings\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"#transformcallback\"\u003e\u003ccode\u003eTransformCallback\u003c/code\u003e\u003c/a\u003e,\nand \u003ca href=\"#transformer\"\u003e\u003ccode\u003eTransformer\u003c/code\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFor TypeScript to work, it is particularly important to type your plugins\ncorrectly.\nWe strongly recommend using the \u003ccode\u003ePlugin\u003c/code\u003e type with its generics and to use the\nnode types for the syntax trees provided by our packages (as in,\n\u003ca href=\"https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/hast\"\u003e\u003ccode\u003e@types/hast\u003c/code\u003e\u003c/a\u003e, \u003ca href=\"https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/mdast\"\u003e\u003ccode\u003e@types/mdast\u003c/code\u003e\u003c/a\u003e,\n\u003ca href=\"https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/nlcst\"\u003e\u003ccode\u003e@types/nlcst\u003c/code\u003e\u003c/a\u003e).\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-js notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"/**\n * @import {Root as HastRoot} from 'hast'\n * @import {Root as MdastRoot} from 'mdast'\n * @import {Plugin} from 'unified'\n */\n\n/**\n * @typedef Options\n * Configuration (optional).\n * @property {boolean | null | undefined} [someField]\n * Some option (optional).\n */\n\n// To type options:\n/** @type {Plugin\u0026lt;[(Options | null | undefined)?]\u0026gt;} */\nexport function myPluginAcceptingOptions(options) {\n const settings = options || {}\n // `settings` is now `Options`.\n}\n\n// To type a plugin that works on a certain tree, without options:\n/** @type {Plugin\u0026lt;[], MdastRoot\u0026gt;} */\nexport function myRemarkPlugin() {\n return function (tree, file) {\n // `tree` is `MdastRoot`.\n }\n}\n\n// To type a plugin that transforms one tree into another:\n/** @type {Plugin\u0026lt;[], MdastRoot, HastRoot\u0026gt;} */\nexport function remarkRehype() {\n return function (tree) {\n // `tree` is `MdastRoot`.\n // Result must be `HastRoot`.\n }\n}\n\n// To type a plugin that defines a parser:\n/** @type {Plugin\u0026lt;[], string, MdastRoot\u0026gt;} */\nexport function remarkParse(options) {}\n\n// To type a plugin that defines a compiler:\n/** @type {Plugin\u0026lt;[], HastRoot, string\u0026gt;} */\nexport function rehypeStringify(options) {}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e/**\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@import\u003c/span\u003e {Root as HastRoot} from 'hast'\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@import\u003c/span\u003e {Root as MdastRoot} from 'mdast'\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@import\u003c/span\u003e {Plugin} from 'unified'\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e */\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e/**\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@typedef\u003c/span\u003e Options\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * Configuration (optional).\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * \u003cspan class=\"pl-k\"\u003e@property\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003eboolean | null | undefined\u003c/span\u003e} [someField]\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e * Some option (optional).\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e */\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e// To type options:\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e/** \u003cspan class=\"pl-k\"\u003e@type\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003ePlugin\u0026lt;[(Options | null | undefined)?]\u0026gt;\u003c/span\u003e} */\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-en\"\u003emyPluginAcceptingOptions\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003esettings\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e=\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e||\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// `settings` is now `Options`.\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e// To type a plugin that works on a certain tree, without options:\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e/** \u003cspan class=\"pl-k\"\u003e@type\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003ePlugin\u0026lt;[], MdastRoot\u0026gt;\u003c/span\u003e} */\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-en\"\u003emyRemarkPlugin\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003ereturn\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e,\u003c/span\u003e \u003cspan class=\"pl-s1\"\u003efile\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// `tree` is `MdastRoot`.\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e// To type a plugin that transforms one tree into another:\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e/** \u003cspan class=\"pl-k\"\u003e@type\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003ePlugin\u0026lt;[], MdastRoot, HastRoot\u0026gt;\u003c/span\u003e} */\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eremarkRehype\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003ereturn\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003etree\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// `tree` is `MdastRoot`.\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e// Result must be `HastRoot`.\u003c/span\u003e\n \u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e// To type a plugin that defines a parser:\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e/** \u003cspan class=\"pl-k\"\u003e@type\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003ePlugin\u0026lt;[], string, MdastRoot\u0026gt;\u003c/span\u003e} */\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eremarkParse\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e// To type a plugin that defines a compiler:\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e/** \u003cspan class=\"pl-k\"\u003e@type\u003c/span\u003e {\u003cspan class=\"pl-smi\"\u003ePlugin\u0026lt;[], HastRoot, string\u0026gt;\u003c/span\u003e} */\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eexport\u003c/span\u003e \u003cspan class=\"pl-k\"\u003efunction\u003c/span\u003e \u003cspan class=\"pl-en\"\u003erehypeStringify\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e(\u003c/span\u003e\u003cspan class=\"pl-s1\"\u003eoptions\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e)\u003c/span\u003e \u003cspan class=\"pl-kos\"\u003e{\u003c/span\u003e\u003cspan class=\"pl-kos\"\u003e}\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCompatibility\u003c/h2\u003e\u003ca id=\"user-content-compatibility\" class=\"anchor\" aria-label=\"Permalink: Compatibility\" href=\"#compatibility\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eProjects maintained by the unified collective are compatible with maintained\nversions of Node.js.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWhen we cut a new major release, we drop support for unmaintained versions of\nNode.\nThis means we try to keep the current release line, \u003ccode\u003eunified@^11\u003c/code\u003e, compatible\nwith Node.js 16.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eContribute\u003c/h2\u003e\u003ca id=\"user-content-contribute\" class=\"anchor\" aria-label=\"Permalink: Contribute\" href=\"#contribute\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSee \u003ca href=\"https://github.com/unifiedjs/.github/blob/main/contributing.md\"\u003e\u003ccode\u003econtributing.md\u003c/code\u003e\u003c/a\u003e in \u003ca href=\"https://github.com/unifiedjs/.github\"\u003e\u003ccode\u003eunifiedjs/.github\u003c/code\u003e\u003c/a\u003e for ways\nto get started.\nSee \u003ca href=\"https://github.com/unifiedjs/.github/blob/main/support.md\"\u003e\u003ccode\u003esupport.md\u003c/code\u003e\u003c/a\u003e for ways to get help.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThis project has a \u003ca href=\"https://github.com/unifiedjs/.github/blob/main/code-of-conduct.md\"\u003ecode of conduct\u003c/a\u003e.\nBy interacting with this repository, organization, or community you agree to\nabide by its terms.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFor info on how to submit a security report, see our\n\u003ca href=\"https://github.com/unifiedjs/.github/blob/main/security.md\"\u003esecurity policy\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSponsor\u003c/h2\u003e\u003ca id=\"user-content-sponsor\" class=\"anchor\" aria-label=\"Permalink: Sponsor\" href=\"#sponsor\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSupport this effort and give back by sponsoring on \u003ca href=\"https://opencollective.com/unified\" rel=\"nofollow\"\u003eOpenCollective\u003c/a\u003e!\u003c/p\u003e\n\u003cmarkdown-accessiblity-table\u003e\u003ctable\u003e\n\u003ctbody\u003e\u003ctr valign=\"middle\"\u003e\n\u003ctd width=\"20%\" align=\"center\" rowspan=\"2\" colspan=\"2\"\u003e\n \u003ca href=\"https://vercel.com\" rel=\"nofollow\"\u003eVercel\u003c/a\u003e\u003cbr\u003e\u003cbr\u003e\n \u003ca href=\"https://vercel.com\" rel=\"nofollow\"\u003e\u003cimg src=\"https://avatars1.githubusercontent.com/u/14985020?s=256\u0026amp;v=4\" width=\"128\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003c/td\u003e\n\u003ctd width=\"20%\" align=\"center\" rowspan=\"2\" colspan=\"2\"\u003e\n \u003ca href=\"https://motif.land\" rel=\"nofollow\"\u003eMotif\u003c/a\u003e\u003cbr\u003e\u003cbr\u003e\n \u003ca href=\"https://motif.land\" rel=\"nofollow\"\u003e\u003cimg src=\"https://avatars1.githubusercontent.com/u/74457950?s=256\u0026amp;v=4\" width=\"128\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003c/td\u003e\n\u003ctd width=\"20%\" align=\"center\" rowspan=\"2\" colspan=\"2\"\u003e\n \u003ca href=\"https://www.hashicorp.com\" rel=\"nofollow\"\u003eHashiCorp\u003c/a\u003e\u003cbr\u003e\u003cbr\u003e\n \u003ca href=\"https://www.hashicorp.com\" rel=\"nofollow\"\u003e\u003cimg src=\"https://avatars1.githubusercontent.com/u/761456?s=256\u0026amp;v=4\" width=\"128\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003c/td\u003e\n\u003ctd width=\"20%\" align=\"center\" rowspan=\"2\" colspan=\"2\"\u003e\n \u003ca href=\"https://americanexpress.io\" rel=\"nofollow\"\u003eAmerican Express\u003c/a\u003e\u003cbr\u003e\u003cbr\u003e\n \u003ca href=\"https://americanexpress.io\" rel=\"nofollow\"\u003e\u003cimg src=\"https://avatars1.githubusercontent.com/u/3853301?s=256\u0026amp;v=4\" width=\"128\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003c/td\u003e\n\u003ctd width=\"20%\" align=\"center\" rowspan=\"2\" colspan=\"2\"\u003e\n \u003ca 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style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003c/td\u003e\n\u003ctd width=\"10%\" align=\"center\"\u003e\n \u003ca href=\"https://www.holloway.com\" rel=\"nofollow\"\u003eHolloway\u003c/a\u003e\u003cbr\u003e\u003cbr\u003e\n \u003ca href=\"https://www.holloway.com\" rel=\"nofollow\"\u003e\u003cimg src=\"https://avatars1.githubusercontent.com/u/35904294?s=128\u0026amp;v=4\" width=\"64\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr valign=\"middle\"\u003e\n\u003ctd width=\"100%\" align=\"center\" colspan=\"6\"\u003e\n \u003cbr\u003e\n \u003ca href=\"https://opencollective.com/unified\" rel=\"nofollow\"\u003e\u003cstrong\u003eYou?\u003c/strong\u003e\u003c/a\u003e\n \u003cbr\u003e\u003cbr\u003e\n\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/tbody\u003e\u003c/table\u003e\u003c/markdown-accessiblity-table\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAcknowledgments\u003c/h2\u003e\u003ca id=\"user-content-acknowledgments\" class=\"anchor\" aria-label=\"Permalink: Acknowledgments\" href=\"#acknowledgments\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003ePreliminary work for unified was done \u003ca href=\"https://github.com/retextjs/retext/commit/8fcb1f\"\u003ein 2014\u003c/a\u003e for\n\u003cstrong\u003e\u003ca href=\"https://github.com/retextjs/retext\"\u003eretext\u003c/a\u003e\u003c/strong\u003e and inspired by \u003ca href=\"https://github.com/segmentio/ware\"\u003e\u003ccode\u003eware\u003c/code\u003e\u003c/a\u003e.\nFurther incubation happened in \u003cstrong\u003e\u003ca href=\"https://github.com/remarkjs/remark\"\u003eremark\u003c/a\u003e\u003c/strong\u003e.\nThe project was finally \u003ca href=\"https://github.com/remarkjs/remark/commit/9892ec\"\u003eexternalised\u003c/a\u003e in 2015 and \u003ca href=\"https://github.com/unifiedjs/unified/commit/2ba1cf\"\u003epublished\u003c/a\u003e as \u003ccode\u003eunified\u003c/code\u003e.\nThe project was authored by \u003cstrong\u003e\u003ca href=\"https://github.com/wooorm\"\u003e@wooorm\u003c/a\u003e\u003c/strong\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAlthough \u003ccode\u003eunified\u003c/code\u003e since moved its plugin architecture to \u003ca href=\"https://github.com/wooorm/trough#function-fninput-next\"\u003e\u003ccode\u003etrough\u003c/code\u003e\u003c/a\u003e,\nthanks to \u003cstrong\u003e\u003ca href=\"https://github.com/calvinfo\"\u003e@calvinfo\u003c/a\u003e\u003c/strong\u003e,\n\u003cstrong\u003e\u003ca href=\"https://github.com/ianstormtaylor\"\u003e@ianstormtaylor\u003c/a\u003e\u003c/strong\u003e, and others for their\nwork on \u003ca href=\"https://github.com/segmentio/ware\"\u003e\u003ccode\u003eware\u003c/code\u003e\u003c/a\u003e, as it was a huge initial inspiration.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLicense\u003c/h2\u003e\u003ca id=\"user-content-license\" class=\"anchor\" aria-label=\"Permalink: License\" href=\"#license\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"/unifiedjs/unified/blob/main/license\"\u003eMIT\u003c/a\u003e © \u003ca href=\"https://wooorm.com\" rel=\"nofollow\"\u003eTitus Wormer\u003c/a\u003e\u003c/p\u003e\n\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"","anchor":"","htmlText":""},{"level":2,"text":"Contents","anchor":"contents","htmlText":"Contents"},{"level":2,"text":"What is this?","anchor":"what-is-this","htmlText":"What is this?"},{"level":2,"text":"When should I use this?","anchor":"when-should-i-use-this","htmlText":"When should I use this?"},{"level":2,"text":"Install","anchor":"install","htmlText":"Install"},{"level":2,"text":"Use","anchor":"use","htmlText":"Use"},{"level":2,"text":"Overview","anchor":"overview","htmlText":"Overview"},{"level":6,"text":"Processors","anchor":"processors","htmlText":"Processors"},{"level":6,"text":"File","anchor":"file","htmlText":"File"},{"level":6,"text":"Syntax tree","anchor":"syntax-tree","htmlText":"Syntax 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value]])","anchor":"processordatakey-value","htmlText":"processor.data([key[, 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options])"},{"level":6,"text":"Signatures","anchor":"signatures-3","htmlText":"Signatures"},{"level":6,"text":"Parameters","anchor":"parameters-7","htmlText":"Parameters"},{"level":6,"text":"Returns","anchor":"returns-9","htmlText":"Returns"},{"level":6,"text":"Example","anchor":"example-8","htmlText":"Example"},{"level":3,"text":"CompileResultMap","anchor":"compileresultmap","htmlText":"CompileResultMap"},{"level":6,"text":"Type","anchor":"type","htmlText":"Type"},{"level":3,"text":"CompileResults","anchor":"compileresults","htmlText":"CompileResults"},{"level":6,"text":"Type","anchor":"type-1","htmlText":"Type"},{"level":3,"text":"Compiler","anchor":"compiler","htmlText":"Compiler"},{"level":6,"text":"Type","anchor":"type-2","htmlText":"Type"},{"level":3,"text":"Data","anchor":"data","htmlText":"Data"},{"level":6,"text":"Type","anchor":"type-3","htmlText":"Type"},{"level":3,"text":"Parser","anchor":"parser","htmlText":"Parser"},{"level":6,"text":"Type","anchor":"type-4","htmlText":"Type"},{"level":3,"text":"Pluggable","anchor":"pluggable","htmlText":"Pluggable"},{"level":6,"text":"Type","anchor":"type-5","htmlText":"Type"},{"level":3,"text":"PluggableList","anchor":"pluggablelist","htmlText":"PluggableList"},{"level":6,"text":"Type","anchor":"type-6","htmlText":"Type"},{"level":3,"text":"Plugin","anchor":"plugin","htmlText":"Plugin"},{"level":6,"text":"Type","anchor":"type-7","htmlText":"Type"},{"level":6,"text":"Example","anchor":"example-9","htmlText":"Example"},{"level":3,"text":"PluginTuple","anchor":"plugintuple","htmlText":"PluginTuple"},{"level":6,"text":"Type","anchor":"type-8","htmlText":"Type"},{"level":3,"text":"Preset","anchor":"preset","htmlText":"Preset"},{"level":6,"text":"Fields","anchor":"fields","htmlText":"Fields"},{"level":6,"text":"Example","anchor":"example-10","htmlText":"Example"},{"level":3,"text":"ProcessCallback","anchor":"processcallback","htmlText":"ProcessCallback"},{"level":6,"text":"Parameters","anchor":"parameters-8","htmlText":"Parameters"},{"level":6,"text":"Returns","anchor":"returns-10","htmlText":"Returns"},{"level":6,"text":"Example","anchor":"example-11","htmlText":"Example"},{"level":3,"text":"Processor","anchor":"processor-1","htmlText":"Processor"},{"level":3,"text":"RunCallback","anchor":"runcallback","htmlText":"RunCallback"},{"level":6,"text":"Parameters","anchor":"parameters-9","htmlText":"Parameters"},{"level":6,"text":"Returns","anchor":"returns-11","htmlText":"Returns"},{"level":3,"text":"Settings","anchor":"settings","htmlText":"Settings"},{"level":6,"text":"Type","anchor":"type-9","htmlText":"Type"},{"level":3,"text":"TransformCallback","anchor":"transformcallback","htmlText":"TransformCallback"},{"level":6,"text":"Parameters","anchor":"parameters-10","htmlText":"Parameters"},{"level":6,"text":"Returns","anchor":"returns-12","htmlText":"Returns"},{"level":3,"text":"Transformer","anchor":"transformer","htmlText":"Transformer"},{"level":6,"text":"Type","anchor":"type-10","htmlText":"Type"},{"level":2,"text":"Types","anchor":"types","htmlText":"Types"},{"level":2,"text":"Compatibility","anchor":"compatibility","htmlText":"Compatibility"},{"level":2,"text":"Contribute","anchor":"contribute","htmlText":"Contribute"},{"level":2,"text":"Sponsor","anchor":"sponsor","htmlText":"Sponsor"},{"level":2,"text":"Acknowledgments","anchor":"acknowledgments","htmlText":"Acknowledgments"},{"level":2,"text":"License","anchor":"license","htmlText":"License"}],"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Funifiedjs%2Funified"}},{"displayName":"code-of-conduct.md","repoName":".github","refName":"main","path":"code-of-conduct.md","preferredFileType":"code_of_conduct","tabName":"Code 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1-.154.838l-.53-.53.529.531-.001.002-.002.002-.006.006-.016.015-.045.04c-.21.176-.441.327-.686.45C4.556 10.78 3.88 11 3 11a4.498 4.498 0 0 1-2.023-.454 3.544 3.544 0 0 1-.686-.45l-.045-.04-.016-.015-.006-.006-.004-.004v-.001a.75.75 0 0 1-.154-.838L2.178 4.5H1.75a.75.75 0 0 1 0-1.5h2.234a.249.249 0 0 0 .125-.033l1.288-.737c.265-.15.564-.23.869-.23h.984V.75a.75.75 0 0 1 1.5 0Zm2.945 8.477c.285.135.718.273 1.305.273s1.02-.138 1.305-.273L13 6.327Zm-10 0c.285.135.718.273 1.305.273s1.02-.138 1.305-.273L3 6.327Z"></path></svg></span><span data-component="text" data-content="Security">Security</span></a></li></ul></nav><button style="--button-color:fg.subtle" type="button" aria-label="Outline" aria-haspopup="true" aria-expanded="false" tabindex="0" class="Box-sc-g0xbh4-0 cwoBXV prc-Button-ButtonBase-c50BI" data-loading="false" data-size="medium" data-variant="invisible" aria-describedby=":Rr9ab:-loading-announcement" id=":Rr9ab:"><svg aria-hidden="true" focusable="false" class="octicon 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octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="https://github.com/unifiedjs/unified/actions"><img src="https://github.com/unifiedjs/unified/workflows/main/badge.svg" alt="Build" style="max-width: 100%;"></a> <a href="https://codecov.io/github/unifiedjs/unified" rel="nofollow"><img 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data-canonical-src="https://img.shields.io/bundlejs/size/unified" style="max-width: 100%;"></a> <a href="https://opencollective.com/unified" rel="nofollow"><img src="https://camo.githubusercontent.com/e03ac3fb98194bae06ced94bbe385156b836c258a931ceb49361eabb758477bd/68747470733a2f2f6f70656e636f6c6c6563746976652e636f6d2f756e69666965642f73706f6e736f72732f62616467652e737667" alt="Sponsors" data-canonical-src="https://opencollective.com/unified/sponsors/badge.svg" style="max-width: 100%;"></a> <a href="https://opencollective.com/unified" rel="nofollow"><img src="https://camo.githubusercontent.com/6a27a556e720f7a532a9cdc63d0e62f584a886ca5b3a48029d1747e5b74b6523/68747470733a2f2f6f70656e636f6c6c6563746976652e636f6d2f756e69666965642f6261636b6572732f62616467652e737667" alt="Backers" data-canonical-src="https://opencollective.com/unified/backers/badge.svg" style="max-width: 100%;"></a> <a href="https://github.com/unifiedjs/unified/discussions"><img src="https://camo.githubusercontent.com/869bb464c3a7c8b0d983c3838284c1cfb7620418f109816805119e8a8d681b9f/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f636861742d64697363757373696f6e732d737563636573732e737667" alt="Chat" data-canonical-src="https://img.shields.io/badge/chat-discussions-success.svg" style="max-width: 100%;"></a></p> <p dir="auto"><strong>unified</strong> lets you inspect and transform content with plugins.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Contents</h2><a id="user-content-contents" class="anchor" aria-label="Permalink: Contents" href="#contents"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="#what-is-this">What is this?</a></li> <li><a href="#when-should-i-use-this">When should I use this?</a></li> <li><a href="#install">Install</a></li> <li><a href="#use">Use</a></li> <li><a href="#overview">Overview</a></li> <li><a href="#api">API</a> <ul dir="auto"> <li><a href="#processor"><code>processor()</code></a></li> <li><a href="#processorcompiler"><code>processor.compiler</code></a></li> <li><a href="#processordatakey-value"><code>processor.data([key[, value]])</code></a></li> <li><a href="#processorfreeze"><code>processor.freeze()</code></a></li> <li><a href="#processorparsefile"><code>processor.parse(file)</code></a></li> <li><a href="#processorparser"><code>processor.parser</code></a></li> <li><a href="#processorprocessfile-done"><code>processor.process(file[, done])</code></a></li> <li><a href="#processorprocesssyncfile"><code>processor.processSync(file)</code></a></li> <li><a href="#processorruntree-file-done"><code>processor.run(tree[, file][, done])</code></a></li> <li><a href="#processorrunsynctree-file"><code>processor.runSync(tree[, file])</code></a></li> <li><a href="#processorstringifytree-file"><code>processor.stringify(tree[, file])</code></a></li> <li><a href="#processoruseplugin-options"><code>processor.use(plugin[, options])</code></a></li> <li><a href="#compileresultmap"><code>CompileResultMap</code></a></li> <li><a href="#compileresults"><code>CompileResults</code></a></li> <li><a href="#compiler"><code>Compiler</code></a></li> <li><a href="#data"><code>Data</code></a></li> <li><a href="#parser"><code>Parser</code></a></li> <li><a href="#pluggable"><code>Pluggable</code></a></li> <li><a href="#pluggablelist"><code>PluggableList</code></a></li> <li><a href="#plugin"><code>Plugin</code></a></li> <li><a href="#plugintuple"><code>PluginTuple</code></a></li> <li><a href="#preset"><code>Preset</code></a></li> <li><a href="#processcallback"><code>ProcessCallback</code></a></li> <li><a href="#processor-1"><code>Processor</code></a></li> <li><a href="#runcallback"><code>RunCallback</code></a></li> <li><a href="#settings"><code>Settings</code></a></li> <li><a href="#transformcallback"><code>TransformCallback</code></a></li> <li><a href="#transformer"><code>Transformer</code></a></li> </ul> </li> <li><a href="#types">Types</a></li> <li><a href="#compatibility">Compatibility</a></li> <li><a href="#contribute">Contribute</a></li> <li><a href="#sponsor">Sponsor</a></li> <li><a href="#acknowledgments">Acknowledgments</a></li> <li><a href="#license">License</a></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">What is this?</h2><a id="user-content-what-is-this" class="anchor" aria-label="Permalink: What is this?" href="#what-is-this"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">unified is two things:</p> <ul dir="auto"> <li><strong>unified</strong> is a collective of 500+ free and open source packages that work with content as structured data (ASTs)</li> <li><code>unified</code> (this project) is the core package, used in 1.3m+ projects on GH, to process content with plugins</li> </ul> <p dir="auto">Several ecosystems are built on unified around different kinds of content. Notably, <a href="https://github.com/remarkjs/remark">remark</a> (markdown), <a href="https://github.com/rehypejs/rehype">rehype</a> (HTML), and <a href="https://github.com/retextjs/retext">retext</a> (natural language). These ecosystems can be connected together.</p> <ul dir="auto"> <li>for more about us, see <a href="https://unifiedjs.com" rel="nofollow"><code>unifiedjs.com</code></a></li> <li>for questions, see <a href="https://github.com/unifiedjs/.github/blob/main/support.md">support</a></li> <li>to help, see <a href="#contribute">contribute</a> and <a href="#sponsor">sponsor</a> below</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">When should I use this?</h2><a id="user-content-when-should-i-use-this" class="anchor" aria-label="Permalink: When should I use this?" href="#when-should-i-use-this"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In some cases, you are already using unified. For example, it’s used in MDX, Gatsby, Docusaurus, etc. In those cases, you don’t need to add <code>unified</code> yourself but you can include plugins into those projects.</p> <p dir="auto">But the real fun (for some) is to get your hands dirty and work with syntax trees and build with it yourself. You can create those projects, or things like Prettier, or your own site generator. You can connect utilities together and make your own plugins that check for problems and transform from one thing to another.</p> <p dir="auto">When you are dealing with one type of content (such as markdown), you can use the main package of that ecosystem instead (so <code>remark</code>). When you are dealing with different kinds of content (such as markdown and HTML), it’s recommended to use <code>unified</code> itself, and pick and choose the plugins you need.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Install</h2><a id="user-content-install" class="anchor" aria-label="Permalink: Install" href="#install"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This package is <a href="https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c">ESM only</a>. In Node.js (version 16+), install with <a href="https://docs.npmjs.com/cli/install" rel="nofollow">npm</a>:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="npm install unified"><pre>npm install unified</pre></div> <p dir="auto">In Deno with <a href="https://esm.sh" rel="nofollow"><code>esm.sh</code></a>:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import {unified} from 'https://esm.sh/unified@11'"><pre><span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'https://esm.sh/unified@11'</span></pre></div> <p dir="auto">In browsers with <a href="https://esm.sh" rel="nofollow"><code>esm.sh</code></a>:</p> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<script type="module"> import {unified} from 'https://esm.sh/unified@11?bundle' </script>"><pre><span class="pl-kos"><</span><span class="pl-ent">script</span> <span class="pl-c1">type</span>="<span class="pl-s">module</span>"<span class="pl-kos">></span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'https://esm.sh/unified@11?bundle'</span> <span class="pl-kos"></</span><span class="pl-ent">script</span><span class="pl-kos">></span></pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Use</h2><a id="user-content-use" class="anchor" aria-label="Permalink: Use" href="#use"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import rehypeDocument from 'rehype-document' import rehypeFormat from 'rehype-format' import rehypeStringify from 'rehype-stringify' import remarkParse from 'remark-parse' import remarkRehype from 'remark-rehype' import {unified} from 'unified' import {reporter} from 'vfile-reporter' const file = await unified() .use(remarkParse) .use(remarkRehype) .use(rehypeDocument, {title: '👋🌍'}) .use(rehypeFormat) .use(rehypeStringify) .process('# Hello world!') console.error(reporter(file)) console.log(String(file))"><pre><span class="pl-k">import</span> <span class="pl-s1">rehypeDocument</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-document'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeFormat</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-format'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeStringify</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-stringify'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkParse</span> <span class="pl-k">from</span> <span class="pl-s">'remark-parse'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkRehype</span> <span class="pl-k">from</span> <span class="pl-s">'remark-rehype'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">reporter</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'vfile-reporter'</span> <span class="pl-k">const</span> <span class="pl-s1">file</span> <span class="pl-c1">=</span> <span class="pl-k">await</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkParse</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkRehype</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeDocument</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">title</span>: <span class="pl-s">'👋🌍'</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeFormat</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeStringify</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">process</span><span class="pl-kos">(</span><span class="pl-s">'# Hello world!'</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">error</span><span class="pl-kos">(</span><span class="pl-en">reporter</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-v">String</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-adblock notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="no issues found"><pre>no issues found</pre></div> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>👋🌍</title> <meta name="viewport" content="width=device-width, initial-scale=1"> </head> <body> <h1>Hello world!</h1> </body> </html>"><pre><span class="pl-c1"><!doctype html<span class="pl-kos">></span></span> <span class="pl-kos"><</span><span class="pl-ent">html</span> <span class="pl-c1">lang</span>="<span class="pl-s">en</span>"<span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">head</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">meta</span> <span class="pl-c1">charset</span>="<span class="pl-s">utf-8</span>"<span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">title</span><span class="pl-kos">></span>👋🌍<span class="pl-kos"></</span><span class="pl-ent">title</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">meta</span> <span class="pl-c1">name</span>="<span class="pl-s">viewport</span>" <span class="pl-c1">content</span>="<span class="pl-s">width=device-width, initial-scale=1</span>"<span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">head</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">body</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">h1</span><span class="pl-kos">></span>Hello world!<span class="pl-kos"></</span><span class="pl-ent">h1</span><span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">body</span><span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">html</span><span class="pl-kos">></span></pre></div> <p dir="auto"><a name="user-content-description"></a></p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Overview</h2><a id="user-content-overview" class="anchor" aria-label="Permalink: Overview" href="#overview"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><code>unified</code> is an interface for processing content with syntax trees. Syntax trees are a representation of content understandable to programs. Those programs, called <em><a href="#plugin">plugins</a></em>, take these trees and inspect and modify them. To get to the syntax tree from text, there is a <em><a href="#parser">parser</a></em>. To get from that back to text, there is a <em><a href="#compiler">compiler</a></em>. This is the <em><a href="#processorprocessfile-done">process</a></em> of a <em>processor</em>.</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="| ........................ process ........................... | | .......... parse ... | ... run ... | ... stringify ..........| +--------+ +----------+ Input ->- | Parser | ->- Syntax Tree ->- | Compiler | ->- Output +--------+ | +----------+ X | +--------------+ | Transformers | +--------------+"><pre lang="ascii" class="notranslate"><code>| ........................ process ........................... | | .......... parse ... | ... run ... | ... stringify ..........| +--------+ +----------+ Input ->- | Parser | ->- Syntax Tree ->- | Compiler | ->- Output +--------+ | +----------+ X | +--------------+ | Transformers | +--------------+ </code></pre></div> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Processors</h6><a id="user-content-processors" class="anchor" aria-label="Permalink: Processors" href="#processors"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Processors process content. On its own, <code>unified</code> (the root processor) doesn’t work. It needs to be configured with plugins to work. For example:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="const processor = unified() .use(remarkParse) .use(remarkRehype) .use(rehypeDocument, {title: '👋🌍'}) .use(rehypeFormat) .use(rehypeStringify)"><pre><span class="pl-k">const</span> <span class="pl-s1">processor</span> <span class="pl-c1">=</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkParse</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkRehype</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeDocument</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">title</span>: <span class="pl-s">'👋🌍'</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeFormat</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeStringify</span><span class="pl-kos">)</span></pre></div> <p dir="auto">That processor can do different things. It can:</p> <ul dir="auto"> <li>…parse markdown (<code>parse</code>)</li> <li>…turn parsed markdown into HTML and format the HTML (<code>run</code>)</li> <li>…compile HTML (<code>stringify</code>)</li> <li>…do all of the above (<code>process</code>)</li> </ul> <p dir="auto">Every processor implements another processor. To create a processor, call another processor. The new processor is configured to work the same as its ancestor. But when the descendant processor is configured in the future it does not affect the ancestral processor.</p> <p dir="auto">When processors are exposed from a module (for example, <code>unified</code> itself) they should not be configured directly, as that would change their behavior for all module users. Those processors are <em><a href="#processorfreeze">frozen</a></em> and they should be called to create a new processor before they are used.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">File</h6><a id="user-content-file" class="anchor" aria-label="Permalink: File" href="#file"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">When processing a document, metadata is gathered about that document. <a href="https://github.com/vfile/vfile"><code>vfile</code></a> is the file format that stores data, metadata, and messages about files for unified and plugins.</p> <p dir="auto">There are several <a href="https://github.com/vfile/vfile#list-of-utilities">utilities</a> for working with these files.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Syntax tree</h6><a id="user-content-syntax-tree" class="anchor" aria-label="Permalink: Syntax tree" href="#syntax-tree"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The syntax trees used in unified are <a href="https://github.com/syntax-tree/unist">unist</a> nodes. A tree represents a whole document and each <a href="https://github.com/syntax-tree/unist#node">node</a> is a plain JavaScript object with a <code>type</code> field. The semantics of nodes and the format of syntax trees is defined by other projects:</p> <ul dir="auto"> <li><a href="https://github.com/syntax-tree/esast">esast</a> — JavaScript</li> <li><a href="https://github.com/syntax-tree/hast">hast</a> — HTML</li> <li><a href="https://github.com/syntax-tree/mdast">mdast</a> — markdown</li> <li><a href="https://github.com/syntax-tree/nlcst">nlcst</a> — natural language</li> <li><a href="https://github.com/syntax-tree/xast">xast</a> — XML</li> </ul> <p dir="auto">There are many utilities for working with trees listed in each aforementioned project and maintained in the <a href="https://github.com/syntax-tree"><code>syntax-tree</code></a> organization. These utilities are a level lower than unified itself and are building blocks that can be used to make plugins.</p> <p dir="auto"><a name="user-content-list-of-processors"></a></p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Ecosystems</h6><a id="user-content-ecosystems" class="anchor" aria-label="Permalink: Ecosystems" href="#ecosystems"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Around each syntax tree is an ecosystem that focusses on that particular kind of content. At their core, they parse text to a tree and compile that tree back to text. They also provide plugins that work with the syntax tree, without requiring that the end user has knowledge about that tree.</p> <ul dir="auto"> <li><a href="https://github.com/rehypejs/rehype">rehype</a> (hast) — HTML</li> <li><a href="https://github.com/remarkjs/remark">remark</a> (mdast) — markdown</li> <li><a href="https://github.com/retextjs/retext">retext</a> (nlcst) — natural language</li> </ul> <p dir="auto"><a name="user-content-list-of-plugins"></a></p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Plugins</h6><a id="user-content-plugins" class="anchor" aria-label="Permalink: Plugins" href="#plugins"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Each aforementioned ecosystem comes with a large set of plugins that you can pick and choose from to do all kinds of things.</p> <ul dir="auto"> <li><a href="https://github.com/remarkjs/remark/blob/main/doc/plugins.md#list-of-plugins">List of remark plugins</a> · <a href="https://github.com/remarkjs/awesome-remark"><code>remarkjs/awesome-remark</code></a> · <a href="https://github.com/topics/remark-plugin"><code>remark-plugin</code> topic</a></li> <li><a href="https://github.com/rehypejs/rehype/blob/main/doc/plugins.md#list-of-plugins">List of rehype plugins</a> · <a href="https://github.com/rehypejs/awesome-rehype"><code>rehypejs/awesome-rehype</code></a> · <a href="https://github.com/topics/rehype-plugin"><code>rehype-plugin</code> topic</a></li> <li><a href="https://github.com/retextjs/retext/blob/main/doc/plugins.md#list-of-plugins">List of retext plugins</a> · <a href="https://github.com/retextjs/awesome-retext"><code>retextjs/awesome-retext</code></a> · <a href="https://github.com/topics/retext-plugin"><code>retext-plugin</code> topic</a></li> </ul> <p dir="auto">There are also a few plugins that work in any ecosystem:</p> <ul dir="auto"> <li><a href="https://github.com/unifiedjs/unified-diff"><code>unified-diff</code></a> — ignore unrelated messages in GitHub Actions and Travis</li> <li><a href="https://github.com/unifiedjs/unified-infer-git-meta"><code>unified-infer-git-meta</code></a> — infer metadata of a document from Git</li> <li><a href="https://github.com/unifiedjs/unified-message-control"><code>unified-message-control</code></a> — enable, disable, and ignore messages from content</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Configuration</h6><a id="user-content-configuration" class="anchor" aria-label="Permalink: Configuration" href="#configuration"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Processors are configured with <a href="#plugin">plugins</a> or with the <a href="#data"><code>data</code></a> method. Most plugins also accept configuration through options. See each plugin’s readme for more info.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Integrations</h6><a id="user-content-integrations" class="anchor" aria-label="Permalink: Integrations" href="#integrations"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">unified can integrate with the file system through <a href="https://github.com/unifiedjs/unified-engine"><code>unified-engine</code></a>. CLI apps can be created with <a href="https://github.com/unifiedjs/unified-args"><code>unified-args</code></a>, Gulp plugins with <a href="https://github.com/unifiedjs/unified-engine-gulp"><code>unified-engine-gulp</code></a>, and language servers with <a href="https://github.com/unifiedjs/unified-language-server"><code>unified-language-server</code></a>. A streaming interface can be created with <a href="https://github.com/unifiedjs/unified-stream"><code>unified-stream</code></a>.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Programming interface</h6><a id="user-content-programming-interface" class="anchor" aria-label="Permalink: Programming interface" href="#programming-interface"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The <a href="#api">API</a> provided by <code>unified</code> allows multiple files to be processed and gives access to metadata (such as lint messages):</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import rehypeStringify from 'rehype-stringify' import remarkParse from 'remark-parse' import remarkPresetLintMarkdownStyleGuide from 'remark-preset-lint-markdown-style-guide' import remarkRehype from 'remark-rehype' import remarkRetext from 'remark-retext' import retextEnglish from 'retext-english' import retextEquality from 'retext-equality' import {unified} from 'unified' import {reporter} from 'vfile-reporter' const file = await unified() .use(remarkParse) .use(remarkPresetLintMarkdownStyleGuide) .use(remarkRetext, unified().use(retextEnglish).use(retextEquality)) .use(remarkRehype) .use(rehypeStringify) .process('*Emphasis* and _stress_, you guys!') console.error(reporter(file)) console.log(String(file))"><pre><span class="pl-k">import</span> <span class="pl-s1">rehypeStringify</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-stringify'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkParse</span> <span class="pl-k">from</span> <span class="pl-s">'remark-parse'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkPresetLintMarkdownStyleGuide</span> <span class="pl-k">from</span> <span class="pl-s">'remark-preset-lint-markdown-style-guide'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkRehype</span> <span class="pl-k">from</span> <span class="pl-s">'remark-rehype'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkRetext</span> <span class="pl-k">from</span> <span class="pl-s">'remark-retext'</span> <span class="pl-k">import</span> <span class="pl-s1">retextEnglish</span> <span class="pl-k">from</span> <span class="pl-s">'retext-english'</span> <span class="pl-k">import</span> <span class="pl-s1">retextEquality</span> <span class="pl-k">from</span> <span class="pl-s">'retext-equality'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">reporter</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'vfile-reporter'</span> <span class="pl-k">const</span> <span class="pl-s1">file</span> <span class="pl-c1">=</span> <span class="pl-k">await</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkParse</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkPresetLintMarkdownStyleGuide</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkRetext</span><span class="pl-kos">,</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">retextEnglish</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">retextEquality</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkRehype</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeStringify</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">process</span><span class="pl-kos">(</span><span class="pl-s">'*Emphasis* and _stress_, you guys!'</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">error</span><span class="pl-kos">(</span><span class="pl-en">reporter</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-v">String</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-adblock notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="1:16-1:24 warning Emphasis should use `*` as a marker emphasis-marker remark-lint 1:30-1:34 warning `guys` may be insensitive, use `people`, `persons`, `folks` instead gals-man retext-equality ⚠ 2 warnings"><pre>1:16-1:24 warning Emphasis should use `<span class="pl-k">*</span>` as a marker emphasis-marker remark-lint 1:30-1:34 warning `guys` may be insensitive, use `people`, `persons`, `folks` instead gals-man retext-equality ⚠ 2 warnings</pre></div> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<p><em>Emphasis</em> and <em>stress</em>, you guys!</p>"><pre><span class="pl-kos"><</span><span class="pl-ent">p</span><span class="pl-kos">></span><span class="pl-kos"><</span><span class="pl-ent">em</span><span class="pl-kos">></span>Emphasis<span class="pl-kos"></</span><span class="pl-ent">em</span><span class="pl-kos">></span> and <span class="pl-kos"><</span><span class="pl-ent">em</span><span class="pl-kos">></span>stress<span class="pl-kos"></</span><span class="pl-ent">em</span><span class="pl-kos">></span>, you guys!<span class="pl-kos"></</span><span class="pl-ent">p</span><span class="pl-kos">></span></pre></div> <p dir="auto"><a name="user-content-processing-between-syntaxes"></a></p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Transforming between ecosystems</h6><a id="user-content-transforming-between-ecosystems" class="anchor" aria-label="Permalink: Transforming between ecosystems" href="#transforming-between-ecosystems"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Ecosystems can be combined in two modes.</p> <p dir="auto"><strong>Bridge</strong> mode transforms the tree from one format (<em>origin</em>) to another (<em>destination</em>). A different processor runs on the destination tree. Afterwards, the original processor continues with the origin tree.</p> <p dir="auto"><strong>Mutate</strong> mode also transforms the syntax tree from one format to another. But the original processor continues transforming the destination tree.</p> <p dir="auto">In the previous example (“Programming interface”), <code>remark-retext</code> is used in bridge mode: the origin syntax tree is kept after retext is done; whereas <code>remark-rehype</code> is used in mutate mode: it sets a new syntax tree and discards the origin tree.</p> <p dir="auto">The following plugins lets you combine ecosystems:</p> <ul dir="auto"> <li><a href="https://github.com/remarkjs/remark-retext"><code>remark-retext</code></a> — turn markdown into natural language</li> <li><a href="https://github.com/remarkjs/remark-rehype"><code>remark-rehype</code></a> — turn markdown into HTML</li> <li><a href="https://github.com/rehypejs/rehype-retext"><code>rehype-retext</code></a> — turn HTML into natural language</li> <li><a href="https://github.com/rehypejs/rehype-remark"><code>rehype-remark</code></a> — turn HTML into markdown</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">API</h2><a id="user-content-api" class="anchor" aria-label="Permalink: API" href="#api"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This package exports the identifier <code>unified</code> (the root <code>processor</code>). There is no default export.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor()</code></h3><a id="user-content-processor" class="anchor" aria-label="Permalink: processor()" href="#processor"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Create a new processor.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns" class="anchor" aria-label="Permalink: Returns" href="#returns"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">New <em><a href="#processorfreeze">unfrozen</a></em> processor (<a href="#processor"><code>processor</code></a>).</p> <p dir="auto">This processor is configured to work the same as its ancestor. When the descendant processor is configured in the future it does not affect the ancestral processor.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example" class="anchor" aria-label="Permalink: Example" href="#example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example shows how a new processor can be created (from <code>remark</code>) and linked to <strong>stdin</strong>(4) and <strong>stdout</strong>(4).</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import process from 'node:process' import concatStream from 'concat-stream' import {remark} from 'remark' process.stdin.pipe( concatStream(function (buf) { process.stdout.write(String(remark().processSync(buf))) }) )"><pre><span class="pl-k">import</span> <span class="pl-s1">process</span> <span class="pl-k">from</span> <span class="pl-s">'node:process'</span> <span class="pl-k">import</span> <span class="pl-s1">concatStream</span> <span class="pl-k">from</span> <span class="pl-s">'concat-stream'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">remark</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'remark'</span> <span class="pl-s1">process</span><span class="pl-kos">.</span><span class="pl-c1">stdin</span><span class="pl-kos">.</span><span class="pl-en">pipe</span><span class="pl-kos">(</span> <span class="pl-en">concatStream</span><span class="pl-kos">(</span><span class="pl-k">function</span> <span class="pl-kos">(</span><span class="pl-s1">buf</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-s1">process</span><span class="pl-kos">.</span><span class="pl-c1">stdout</span><span class="pl-kos">.</span><span class="pl-en">write</span><span class="pl-kos">(</span><span class="pl-v">String</span><span class="pl-kos">(</span><span class="pl-en">remark</span><span class="pl-kos">(</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">processSync</span><span class="pl-kos">(</span><span class="pl-s1">buf</span><span class="pl-kos">)</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-kos">)</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.compiler</code></h3><a id="user-content-processorcompiler" class="anchor" aria-label="Permalink: processor.compiler" href="#processorcompiler"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Compiler to use (<a href="#compiler"><code>Compiler</code></a>, optional).</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.data([key[, value]])</code></h3><a id="user-content-processordatakey-value" class="anchor" aria-label="Permalink: processor.data([key[, value]])" href="#processordatakey-value"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Configure the processor with info available to all plugins. Information is stored in an object.</p> <p dir="auto">Typically, options can be given to a specific plugin, but sometimes it makes sense to have information shared with several plugins. For example, a list of HTML elements that are self-closing, which is needed during all <a href="#overview">phases</a>.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: setting information cannot occur on <em><a href="#processorfreeze">frozen</a></em> processors. Call the processor first to create a new unfrozen processor.</p> </blockquote> <blockquote> <p dir="auto">👉 <strong>Note</strong>: to register custom data in TypeScript, augment the <a href="#data"><code>Data</code></a> interface.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Signatures</h6><a id="user-content-signatures" class="anchor" aria-label="Permalink: Signatures" href="#signatures"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>processor = processor.data(key, value)</code></li> <li><code>processor = processor.data(dataset)</code></li> <li><code>value = processor.data(key)</code></li> <li><code>dataset = processor.data()</code></li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters" class="anchor" aria-label="Permalink: Parameters" href="#parameters"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>key</code> (<a href="#data"><code>keyof Data</code></a>, optional) — field to get</li> <li><code>value</code> (<a href="#data"><code>Data[key]</code></a>) — value to set</li> <li><code>values</code> (<a href="#data"><code>Data</code></a>) — values to set</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-1" class="anchor" aria-label="Permalink: Returns" href="#returns-1"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The current processor when setting (<a href="#processor"><code>processor</code></a>), the value at <code>key</code> when getting (<a href="#data"><code>Data[key]</code></a>), or the entire dataset when getting without key (<a href="#data"><code>Data</code></a>).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-1" class="anchor" aria-label="Permalink: Example" href="#example-1"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example show how to get and set info:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import {unified} from 'unified' const processor = unified().data('alpha', 'bravo') processor.data('alpha') // => 'bravo' processor.data() // => {alpha: 'bravo'} processor.data({charlie: 'delta'}) processor.data() // => {charlie: 'delta'}"><pre><span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">const</span> <span class="pl-s1">processor</span> <span class="pl-c1">=</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">data</span><span class="pl-kos">(</span><span class="pl-s">'alpha'</span><span class="pl-kos">,</span> <span class="pl-s">'bravo'</span><span class="pl-kos">)</span> <span class="pl-s1">processor</span><span class="pl-kos">.</span><span class="pl-en">data</span><span class="pl-kos">(</span><span class="pl-s">'alpha'</span><span class="pl-kos">)</span> <span class="pl-c">// => 'bravo'</span> <span class="pl-s1">processor</span><span class="pl-kos">.</span><span class="pl-en">data</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-c">// => {alpha: 'bravo'}</span> <span class="pl-s1">processor</span><span class="pl-kos">.</span><span class="pl-en">data</span><span class="pl-kos">(</span><span class="pl-kos">{</span><span class="pl-c1">charlie</span>: <span class="pl-s">'delta'</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-s1">processor</span><span class="pl-kos">.</span><span class="pl-en">data</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-c">// => {charlie: 'delta'}</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.freeze()</code></h3><a id="user-content-processorfreeze" class="anchor" aria-label="Permalink: processor.freeze()" href="#processorfreeze"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Freeze a processor.</p> <p dir="auto">Frozen processors are meant to be extended and not to be configured directly.</p> <p dir="auto">When a processor is frozen it cannot be unfrozen. New processors working the same way can be created by calling the processor.</p> <p dir="auto">It’s possible to freeze processors explicitly by calling <code>.freeze()</code>. Processors freeze automatically when <code>.parse()</code>, <code>.run()</code>, <code>.runSync()</code>, <code>.stringify()</code>, <code>.process()</code>, or <code>.processSync()</code> are called.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-2" class="anchor" aria-label="Permalink: Returns" href="#returns-2"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The current processor (<a href="#processor"><code>processor</code></a>).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-2" class="anchor" aria-label="Permalink: Example" href="#example-2"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example, <code>index.js</code>, shows how <code>rehype</code> prevents extensions to itself:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import rehypeParse from 'rehype-parse' import rehypeStringify from 'rehype-stringify' import {unified} from 'unified' export const rehype = unified().use(rehypeParse).use(rehypeStringify).freeze()"><pre><span class="pl-k">import</span> <span class="pl-s1">rehypeParse</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-parse'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeStringify</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-stringify'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">export</span> <span class="pl-k">const</span> <span class="pl-s1">rehype</span> <span class="pl-c1">=</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeParse</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeStringify</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">freeze</span><span class="pl-kos">(</span><span class="pl-kos">)</span></pre></div> <p dir="auto">That processor can be used and configured like so:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import {rehype} from 'rehype' import rehypeFormat from 'rehype-format' // … rehype() .use(rehypeFormat) // …"><pre><span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">rehype</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'rehype'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeFormat</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-format'</span> <span class="pl-c">// …</span> <span class="pl-en">rehype</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeFormat</span><span class="pl-kos">)</span> <span class="pl-c">// …</span></pre></div> <p dir="auto">A similar looking example is broken as operates on the frozen interface. If this behavior was allowed it would result in unexpected behavior so an error is thrown. <strong>This is not valid</strong>:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import {rehype} from 'rehype' import rehypeFormat from 'rehype-format' // … rehype .use(rehypeFormat) // …"><pre><span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">rehype</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'rehype'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeFormat</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-format'</span> <span class="pl-c">// …</span> <span class="pl-s1">rehype</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeFormat</span><span class="pl-kos">)</span> <span class="pl-c">// …</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-adblock notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="~/node_modules/unified/index.js:426 throw new Error( ^ Error: Cannot call `use` on a frozen processor. Create a new processor first, by calling it: use `processor()` instead of `processor`. at assertUnfrozen (~/node_modules/unified/index.js:426:11) at Function.use (~/node_modules/unified/index.js:165:5) …"><pre>~/node_modules/unified/index.js:426 throw new Error( <span class="pl-k">^</span> Error: Cannot call `use` on a frozen processor. Create a new processor first, by calling it: use `processor()` instead of `processor`. at assertUnfrozen (~/node_modules/unified/index.js:426:11) at Function.use (~/node_modules/unified/index.js:165:5) …</pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.parse(file)</code></h3><a id="user-content-processorparsefile" class="anchor" aria-label="Permalink: processor.parse(file)" href="#processorparsefile"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Parse text to a syntax tree.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>parse</code> freezes the processor if not already <em><a href="#processorfreeze">frozen</a></em>.</p> </blockquote> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>parse</code> performs the <a href="#overview">parse phase</a>, not the run phase or other phases.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-1" class="anchor" aria-label="Permalink: Parameters" href="#parameters-1"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>file</code> (<a href="https://github.com/vfile/vfile#compatible"><code>Compatible</code></a>) — file to parse; typically <code>string</code> or <a href="https://github.com/vfile/vfile"><code>VFile</code></a>; any value accepted as <code>x</code> in <code>new VFile(x)</code></li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-3" class="anchor" aria-label="Permalink: Returns" href="#returns-3"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Syntax tree representing <code>file</code> (<a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a>).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-3" class="anchor" aria-label="Permalink: Example" href="#example-3"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example shows how <code>parse</code> can be used to create a tree from a file.</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import remarkParse from 'remark-parse' import {unified} from 'unified' const tree = unified().use(remarkParse).parse('# Hello world!') console.log(tree)"><pre><span class="pl-k">import</span> <span class="pl-s1">remarkParse</span> <span class="pl-k">from</span> <span class="pl-s">'remark-parse'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">const</span> <span class="pl-s1">tree</span> <span class="pl-c1">=</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkParse</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">parse</span><span class="pl-kos">(</span><span class="pl-s">'# Hello world!'</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-s1">tree</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="{ type: 'root', children: [ {type: 'heading', depth: 1, children: [Array], position: [Object]} ], position: { start: {line: 1, column: 1, offset: 0}, end: {line: 1, column: 15, offset: 14} } }"><pre><span class="pl-kos">{</span> <span class="pl-c1">type</span>: <span class="pl-s">'root'</span><span class="pl-kos">,</span> <span class="pl-c1">children</span>: <span class="pl-kos">[</span> <span class="pl-kos">{</span><span class="pl-c1">type</span>: <span class="pl-s">'heading'</span><span class="pl-kos">,</span> <span class="pl-c1">depth</span>: <span class="pl-c1">1</span><span class="pl-kos">,</span> <span class="pl-c1">children</span>: <span class="pl-kos">[</span><span class="pl-v">Array</span><span class="pl-kos">]</span><span class="pl-kos">,</span> <span class="pl-c1">position</span>: <span class="pl-kos">[</span><span class="pl-v">Object</span><span class="pl-kos">]</span><span class="pl-kos">}</span> <span class="pl-kos">]</span><span class="pl-kos">,</span> <span class="pl-c1">position</span>: <span class="pl-kos">{</span> <span class="pl-c1">start</span>: <span class="pl-kos">{</span><span class="pl-c1">line</span>: <span class="pl-c1">1</span><span class="pl-kos">,</span> <span class="pl-c1">column</span>: <span class="pl-c1">1</span><span class="pl-kos">,</span> <span class="pl-c1">offset</span>: <span class="pl-c1">0</span><span class="pl-kos">}</span><span class="pl-kos">,</span> <span class="pl-c1">end</span>: <span class="pl-kos">{</span><span class="pl-c1">line</span>: <span class="pl-c1">1</span><span class="pl-kos">,</span> <span class="pl-c1">column</span>: <span class="pl-c1">15</span><span class="pl-kos">,</span> <span class="pl-c1">offset</span>: <span class="pl-c1">14</span><span class="pl-kos">}</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.parser</code></h3><a id="user-content-processorparser" class="anchor" aria-label="Permalink: processor.parser" href="#processorparser"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Parser to use (<a href="#parser"><code>Parser</code></a>, optional).</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.process(file[, done])</code></h3><a id="user-content-processorprocessfile-done" class="anchor" aria-label="Permalink: processor.process(file[, done])" href="#processorprocessfile-done"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Process the given file as configured on the processor.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>process</code> freezes the processor if not already <em><a href="#processorfreeze">frozen</a></em>.</p> </blockquote> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>process</code> performs the <a href="#overview">parse, run, and stringify phases</a>.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Signatures</h6><a id="user-content-signatures-1" class="anchor" aria-label="Permalink: Signatures" href="#signatures-1"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>processor.process(file, done)</code></li> <li><code>Promise<VFile> = processor.process(file?)</code></li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-2" class="anchor" aria-label="Permalink: Parameters" href="#parameters-2"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>file</code> (<a href="https://github.com/vfile/vfile#compatible"><code>Compatible</code></a>, optional) — file; typically <code>string</code> or <a href="https://github.com/vfile/vfile"><code>VFile</code></a>; any value accepted as <code>x</code> in <code>new VFile(x)</code></li> <li><code>done</code> (<a href="#processcallback"><code>ProcessCallback</code></a>, optional) — callback</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-4" class="anchor" aria-label="Permalink: Returns" href="#returns-4"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Nothing if <code>done</code> is given (<code>undefined</code>). Otherwise a promise, rejected with a fatal error or resolved with the processed file (<a href="https://github.com/vfile/vfile"><code>Promise<VFile></code></a>).</p> <p dir="auto">The parsed, transformed, and compiled value is available at <code>file.value</code> (see note).</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: unified typically compiles by serializing: most compilers return <code>string</code> (or <code>Uint8Array</code>). Some compilers, such as the one configured with <a href="https://github.com/rehypejs/rehype-react"><code>rehype-react</code></a>, return other values (in this case, a React tree). If you’re using a compiler that doesn’t serialize, expect different result values.</p> <p dir="auto">To register custom results in TypeScript, add them to <a href="#compileresultmap"><code>CompileResultMap</code></a>.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-4" class="anchor" aria-label="Permalink: Example" href="#example-4"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example shows how <code>process</code> can be used to process a file:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import rehypeDocument from 'rehype-document' import rehypeFormat from 'rehype-format' import rehypeStringify from 'rehype-stringify' import remarkParse from 'remark-parse' import remarkRehype from 'remark-rehype' import {unified} from 'unified' const file = await unified() .use(remarkParse) .use(remarkRehype) .use(rehypeDocument, {title: '👋🌍'}) .use(rehypeFormat) .use(rehypeStringify) .process('# Hello world!') console.log(String(file))"><pre><span class="pl-k">import</span> <span class="pl-s1">rehypeDocument</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-document'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeFormat</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-format'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeStringify</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-stringify'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkParse</span> <span class="pl-k">from</span> <span class="pl-s">'remark-parse'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkRehype</span> <span class="pl-k">from</span> <span class="pl-s">'remark-rehype'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">const</span> <span class="pl-s1">file</span> <span class="pl-c1">=</span> <span class="pl-k">await</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkParse</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkRehype</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeDocument</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">title</span>: <span class="pl-s">'👋🌍'</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeFormat</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeStringify</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">process</span><span class="pl-kos">(</span><span class="pl-s">'# Hello world!'</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-v">String</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>👋🌍</title> <meta name="viewport" content="width=device-width, initial-scale=1"> </head> <body> <h1>Hello world!</h1> </body> </html>"><pre><span class="pl-c1"><!doctype html<span class="pl-kos">></span></span> <span class="pl-kos"><</span><span class="pl-ent">html</span> <span class="pl-c1">lang</span>="<span class="pl-s">en</span>"<span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">head</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">meta</span> <span class="pl-c1">charset</span>="<span class="pl-s">utf-8</span>"<span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">title</span><span class="pl-kos">></span>👋🌍<span class="pl-kos"></</span><span class="pl-ent">title</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">meta</span> <span class="pl-c1">name</span>="<span class="pl-s">viewport</span>" <span class="pl-c1">content</span>="<span class="pl-s">width=device-width, initial-scale=1</span>"<span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">head</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">body</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">h1</span><span class="pl-kos">></span>Hello world!<span class="pl-kos"></</span><span class="pl-ent">h1</span><span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">body</span><span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">html</span><span class="pl-kos">></span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.processSync(file)</code></h3><a id="user-content-processorprocesssyncfile" class="anchor" aria-label="Permalink: processor.processSync(file)" href="#processorprocesssyncfile"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Process the given file as configured on the processor.</p> <p dir="auto">An error is thrown if asynchronous transforms are configured.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>processSync</code> freezes the processor if not already <em><a href="#processorfreeze">frozen</a></em>.</p> </blockquote> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>processSync</code> performs the <a href="#overview">parse, run, and stringify phases</a>.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-3" class="anchor" aria-label="Permalink: Parameters" href="#parameters-3"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>file</code> (<a href="https://github.com/vfile/vfile#compatible"><code>Compatible</code></a>, optional) — file; typically <code>string</code> or <a href="https://github.com/vfile/vfile"><code>VFile</code></a>; any value accepted as <code>x</code> in <code>new VFile(x)</code></li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-5" class="anchor" aria-label="Permalink: Returns" href="#returns-5"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The processed file (<a href="https://github.com/vfile/vfile"><code>VFile</code></a>).</p> <p dir="auto">The parsed, transformed, and compiled value is available at <code>file.value</code> (see note).</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: unified typically compiles by serializing: most compilers return <code>string</code> (or <code>Uint8Array</code>). Some compilers, such as the one configured with <a href="https://github.com/rehypejs/rehype-react"><code>rehype-react</code></a>, return other values (in this case, a React tree). If you’re using a compiler that doesn’t serialize, expect different result values.</p> <p dir="auto">To register custom results in TypeScript, add them to <a href="#compileresultmap"><code>CompileResultMap</code></a>.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-5" class="anchor" aria-label="Permalink: Example" href="#example-5"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example shows how <code>processSync</code> can be used to process a file, if all transformers are synchronous.</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import rehypeDocument from 'rehype-document' import rehypeFormat from 'rehype-format' import rehypeStringify from 'rehype-stringify' import remarkParse from 'remark-parse' import remarkRehype from 'remark-rehype' import {unified} from 'unified' const processor = unified() .use(remarkParse) .use(remarkRehype) .use(rehypeDocument, {title: '👋🌍'}) .use(rehypeFormat) .use(rehypeStringify) console.log(String(processor.processSync('# Hello world!')))"><pre><span class="pl-k">import</span> <span class="pl-s1">rehypeDocument</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-document'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeFormat</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-format'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeStringify</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-stringify'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkParse</span> <span class="pl-k">from</span> <span class="pl-s">'remark-parse'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkRehype</span> <span class="pl-k">from</span> <span class="pl-s">'remark-rehype'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">const</span> <span class="pl-s1">processor</span> <span class="pl-c1">=</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkParse</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkRehype</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeDocument</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">title</span>: <span class="pl-s">'👋🌍'</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeFormat</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeStringify</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-v">String</span><span class="pl-kos">(</span><span class="pl-s1">processor</span><span class="pl-kos">.</span><span class="pl-en">processSync</span><span class="pl-kos">(</span><span class="pl-s">'# Hello world!'</span><span class="pl-kos">)</span><span class="pl-kos">)</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>👋🌍</title> <meta name="viewport" content="width=device-width, initial-scale=1"> </head> <body> <h1>Hello world!</h1> </body> </html>"><pre><span class="pl-c1"><!doctype html<span class="pl-kos">></span></span> <span class="pl-kos"><</span><span class="pl-ent">html</span> <span class="pl-c1">lang</span>="<span class="pl-s">en</span>"<span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">head</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">meta</span> <span class="pl-c1">charset</span>="<span class="pl-s">utf-8</span>"<span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">title</span><span class="pl-kos">></span>👋🌍<span class="pl-kos"></</span><span class="pl-ent">title</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">meta</span> <span class="pl-c1">name</span>="<span class="pl-s">viewport</span>" <span class="pl-c1">content</span>="<span class="pl-s">width=device-width, initial-scale=1</span>"<span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">head</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">body</span><span class="pl-kos">></span> <span class="pl-kos"><</span><span class="pl-ent">h1</span><span class="pl-kos">></span>Hello world!<span class="pl-kos"></</span><span class="pl-ent">h1</span><span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">body</span><span class="pl-kos">></span> <span class="pl-kos"></</span><span class="pl-ent">html</span><span class="pl-kos">></span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.run(tree[, file][, done])</code></h3><a id="user-content-processorruntree-file-done" class="anchor" aria-label="Permalink: processor.run(tree[, file][, done])" href="#processorruntree-file-done"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Run <em><a href="#transformer">transformers</a></em> on a syntax tree.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>run</code> freezes the processor if not already <em><a href="#processorfreeze">frozen</a></em>.</p> </blockquote> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>run</code> performs the <a href="#overview">run phase</a>, not other phases.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Signatures</h6><a id="user-content-signatures-2" class="anchor" aria-label="Permalink: Signatures" href="#signatures-2"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>processor.run(tree, done)</code></li> <li><code>processor.run(tree, file, done)</code></li> <li><code>Promise<Node> = processor.run(tree, file?)</code></li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-4" class="anchor" aria-label="Permalink: Parameters" href="#parameters-4"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>tree</code> (<a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a>) — tree to transform and inspect</li> <li><code>file</code> (<a href="https://github.com/vfile/vfile#compatible"><code>Compatible</code></a>, optional) — file associated with <code>node</code>; any value accepted as <code>x</code> in <code>new VFile(x)</code></li> <li><code>done</code> (<a href="#runcallback"><code>RunCallback</code></a>, optional) — callback</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-6" class="anchor" aria-label="Permalink: Returns" href="#returns-6"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Nothing if <code>done</code> is given (<code>undefined</code>). Otherwise, a promise rejected with a fatal error or resolved with the transformed tree (<a href="https://github.com/syntax-tree/unist#node"><code>Promise<Node></code></a>).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-6" class="anchor" aria-label="Permalink: Example" href="#example-6"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example shows how <code>run</code> can be used to transform a tree:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import remarkReferenceLinks from 'remark-reference-links' import {unified} from 'unified' import {u} from 'unist-builder' const tree = u('root', [ u('paragraph', [ u('link', {href: 'https://example.com'}, [u('text', 'Example Domain')]) ]) ]) const changedTree = await unified().use(remarkReferenceLinks).run(tree) console.log(changedTree)"><pre><span class="pl-k">import</span> <span class="pl-s1">remarkReferenceLinks</span> <span class="pl-k">from</span> <span class="pl-s">'remark-reference-links'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">u</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unist-builder'</span> <span class="pl-k">const</span> <span class="pl-s1">tree</span> <span class="pl-c1">=</span> <span class="pl-en">u</span><span class="pl-kos">(</span><span class="pl-s">'root'</span><span class="pl-kos">,</span> <span class="pl-kos">[</span> <span class="pl-en">u</span><span class="pl-kos">(</span><span class="pl-s">'paragraph'</span><span class="pl-kos">,</span> <span class="pl-kos">[</span> <span class="pl-en">u</span><span class="pl-kos">(</span><span class="pl-s">'link'</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">href</span>: <span class="pl-s">'https://example.com'</span><span class="pl-kos">}</span><span class="pl-kos">,</span> <span class="pl-kos">[</span><span class="pl-en">u</span><span class="pl-kos">(</span><span class="pl-s">'text'</span><span class="pl-kos">,</span> <span class="pl-s">'Example Domain'</span><span class="pl-kos">)</span><span class="pl-kos">]</span><span class="pl-kos">)</span> <span class="pl-kos">]</span><span class="pl-kos">)</span> <span class="pl-kos">]</span><span class="pl-kos">)</span> <span class="pl-k">const</span> <span class="pl-s1">changedTree</span> <span class="pl-c1">=</span> <span class="pl-k">await</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkReferenceLinks</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">run</span><span class="pl-kos">(</span><span class="pl-s1">tree</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-s1">changedTree</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="{ type: 'root', children: [ {type: 'paragraph', children: [Array]}, {type: 'definition', identifier: '1', title: '', url: undefined} ] }"><pre><span class="pl-kos">{</span> <span class="pl-c1">type</span>: <span class="pl-s">'root'</span><span class="pl-kos">,</span> <span class="pl-c1">children</span>: <span class="pl-kos">[</span> <span class="pl-kos">{</span><span class="pl-c1">type</span>: <span class="pl-s">'paragraph'</span><span class="pl-kos">,</span> <span class="pl-c1">children</span>: <span class="pl-kos">[</span><span class="pl-v">Array</span><span class="pl-kos">]</span><span class="pl-kos">}</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">type</span>: <span class="pl-s">'definition'</span><span class="pl-kos">,</span> <span class="pl-c1">identifier</span>: <span class="pl-s">'1'</span><span class="pl-kos">,</span> <span class="pl-c1">title</span>: <span class="pl-s">''</span><span class="pl-kos">,</span> <span class="pl-c1">url</span>: <span class="pl-c1">undefined</span><span class="pl-kos">}</span> <span class="pl-kos">]</span> <span class="pl-kos">}</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.runSync(tree[, file])</code></h3><a id="user-content-processorrunsynctree-file" class="anchor" aria-label="Permalink: processor.runSync(tree[, file])" href="#processorrunsynctree-file"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Run <em><a href="#transformer">transformers</a></em> on a syntax tree.</p> <p dir="auto">An error is thrown if asynchronous transforms are configured.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>runSync</code> freezes the processor if not already <em><a href="#processorfreeze">frozen</a></em>.</p> </blockquote> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>runSync</code> performs the <a href="#overview">run phase</a>, not other phases.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-5" class="anchor" aria-label="Permalink: Parameters" href="#parameters-5"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>tree</code> (<a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a>) — tree to transform and inspect</li> <li><code>file</code> (<a href="https://github.com/vfile/vfile#compatible"><code>Compatible</code></a>, optional) — file associated with <code>node</code>; any value accepted as <code>x</code> in <code>new VFile(x)</code></li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-7" class="anchor" aria-label="Permalink: Returns" href="#returns-7"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Transformed tree (<a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a>).</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.stringify(tree[, file])</code></h3><a id="user-content-processorstringifytree-file" class="anchor" aria-label="Permalink: processor.stringify(tree[, file])" href="#processorstringifytree-file"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Compile a syntax tree.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>stringify</code> freezes the processor if not already <em><a href="#processorfreeze">frozen</a></em>.</p> </blockquote> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>stringify</code> performs the <a href="#overview">stringify phase</a>, not the run phase or other phases.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-6" class="anchor" aria-label="Permalink: Parameters" href="#parameters-6"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>tree</code> (<a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a>) — tree to compile</li> <li><code>file</code> (<a href="https://github.com/vfile/vfile#compatible"><code>Compatible</code></a>, optional) — file associated with <code>node</code>; any value accepted as <code>x</code> in <code>new VFile(x)</code></li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-8" class="anchor" aria-label="Permalink: Returns" href="#returns-8"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Textual representation of the tree (<code>Uint8Array</code> or <code>string</code>, see note).</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: unified typically compiles by serializing: most compilers return <code>string</code> (or <code>Uint8Array</code>). Some compilers, such as the one configured with <a href="https://github.com/rehypejs/rehype-react"><code>rehype-react</code></a>, return other values (in this case, a React tree). If you’re using a compiler that doesn’t serialize, expect different result values.</p> <p dir="auto">To register custom results in TypeScript, add them to <a href="#compileresultmap"><code>CompileResultMap</code></a>.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-7" class="anchor" aria-label="Permalink: Example" href="#example-7"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example shows how <code>stringify</code> can be used to serialize a syntax tree:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import {h} from 'hastscript' import rehypeStringify from 'rehype-stringify' import {unified} from 'unified' const tree = h('h1', 'Hello world!') const document = unified().use(rehypeStringify).stringify(tree) console.log(document)"><pre><span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">h</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'hastscript'</span> <span class="pl-k">import</span> <span class="pl-s1">rehypeStringify</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-stringify'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">const</span> <span class="pl-s1">tree</span> <span class="pl-c1">=</span> <span class="pl-en">h</span><span class="pl-kos">(</span><span class="pl-s">'h1'</span><span class="pl-kos">,</span> <span class="pl-s">'Hello world!'</span><span class="pl-kos">)</span> <span class="pl-k">const</span> <span class="pl-s1">document</span> <span class="pl-c1">=</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeStringify</span><span class="pl-kos">)</span><span class="pl-kos">.</span><span class="pl-en">stringify</span><span class="pl-kos">(</span><span class="pl-s1">tree</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-s1">document</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<h1>Hello world!</h1>"><pre><span class="pl-kos"><</span><span class="pl-ent">h1</span><span class="pl-kos">></span>Hello world!<span class="pl-kos"></</span><span class="pl-ent">h1</span><span class="pl-kos">></span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>processor.use(plugin[, options])</code></h3><a id="user-content-processoruseplugin-options" class="anchor" aria-label="Permalink: processor.use(plugin[, options])" href="#processoruseplugin-options"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Configure the processor to use a plugin, a list of usable values, or a preset.</p> <p dir="auto">If the processor is already using a plugin, the previous plugin configuration is changed based on the options that are passed in. In other words, the plugin is not added a second time.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: <code>use</code> cannot be called on <a href="#processorfreeze"><em>frozen</em></a> processors. Call the processor first to create a new unfrozen processor.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Signatures</h6><a id="user-content-signatures-3" class="anchor" aria-label="Permalink: Signatures" href="#signatures-3"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>processor.use(preset?)</code></li> <li><code>processor.use(list)</code></li> <li><code>processor.use(plugin[, ...parameters])</code></li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-7" class="anchor" aria-label="Permalink: Parameters" href="#parameters-7"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>preset</code> (<a href="#preset"><code>Preset</code></a>) — plugins and settings</li> <li><code>list</code> (<a href="#pluggablelist"><code>PluggableList</code></a>) — list of usable things</li> <li><code>plugin</code> (<a href="#plugin"><code>Plugin</code></a>) — plugin</li> <li><code>parameters</code> (<code>Array<unknown></code>) — configuration for <code>plugin</code>, typically a single options object</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-9" class="anchor" aria-label="Permalink: Returns" href="#returns-9"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Current processor (<a href="#processor"><code>processor</code></a>).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-8" class="anchor" aria-label="Permalink: Example" href="#example-8"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">There are many ways to pass plugins to <code>.use()</code>. This example gives an overview:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import {unified} from 'unified' unified() // Plugin with options: .use(pluginA, {x: true, y: true}) // Passing the same plugin again merges configuration (to `{x: true, y: false, z: true}`): .use(pluginA, {y: false, z: true}) // Plugins: .use([pluginB, pluginC]) // Two plugins, the second with options: .use([pluginD, [pluginE, {}]]) // Preset with plugins and settings: .use({plugins: [pluginF, [pluginG, {}]], settings: {position: false}}) // Settings only: .use({settings: {position: false}})"><pre><span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-c">// Plugin with options:</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">pluginA</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">x</span>: <span class="pl-c1">true</span><span class="pl-kos">,</span> <span class="pl-c1">y</span>: <span class="pl-c1">true</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-c">// Passing the same plugin again merges configuration (to `{x: true, y: false, z: true}`):</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">pluginA</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">y</span>: <span class="pl-c1">false</span><span class="pl-kos">,</span> <span class="pl-c1">z</span>: <span class="pl-c1">true</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-c">// Plugins:</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-kos">[</span><span class="pl-s1">pluginB</span><span class="pl-kos">,</span> <span class="pl-s1">pluginC</span><span class="pl-kos">]</span><span class="pl-kos">)</span> <span class="pl-c">// Two plugins, the second with options:</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-kos">[</span><span class="pl-s1">pluginD</span><span class="pl-kos">,</span> <span class="pl-kos">[</span><span class="pl-s1">pluginE</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-kos">}</span><span class="pl-kos">]</span><span class="pl-kos">]</span><span class="pl-kos">)</span> <span class="pl-c">// Preset with plugins and settings:</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-kos">{</span><span class="pl-c1">plugins</span>: <span class="pl-kos">[</span><span class="pl-s1">pluginF</span><span class="pl-kos">,</span> <span class="pl-kos">[</span><span class="pl-s1">pluginG</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-kos">}</span><span class="pl-kos">]</span><span class="pl-kos">]</span><span class="pl-kos">,</span> <span class="pl-c1">settings</span>: <span class="pl-kos">{</span><span class="pl-c1">position</span>: <span class="pl-c1">false</span><span class="pl-kos">}</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-c">// Settings only:</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-kos">{</span><span class="pl-c1">settings</span>: <span class="pl-kos">{</span><span class="pl-c1">position</span>: <span class="pl-c1">false</span><span class="pl-kos">}</span><span class="pl-kos">}</span><span class="pl-kos">)</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>CompileResultMap</code></h3><a id="user-content-compileresultmap" class="anchor" aria-label="Permalink: CompileResultMap" href="#compileresultmap"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Interface of known results from compilers (TypeScript type).</p> <p dir="auto">Normally, compilers result in text (<a href="https://github.com/vfile/vfile#value"><code>Value</code></a> of <code>vfile</code>). When you compile to something else, such as a React node (as in, <code>rehype-react</code>), you can augment this interface to include that type.</p> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import type {ReactNode} from 'somewhere' declare module 'unified' { interface CompileResultMap { // Register a new result (value is used, key should match it). ReactNode: ReactNode } } export {} // You may not need this, but it makes sure the file is a module."><pre><span class="pl-k">import</span> <span class="pl-k">type</span> <span class="pl-kos">{</span><span class="pl-v">ReactNode</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'somewhere'</span> <span class="pl-k">declare</span> module <span class="pl-s">'unified'</span> <span class="pl-kos">{</span> <span class="pl-k">interface</span> <span class="pl-smi">CompileResultMap</span> <span class="pl-kos">{</span> <span class="pl-c">// Register a new result (value is used, key should match it).</span> <span class="pl-c1">ReactNode</span>: <span class="pl-smi">ReactNode</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span> <span class="pl-k">export</span> <span class="pl-kos">{</span><span class="pl-kos">}</span> <span class="pl-c">// You may not need this, but it makes sure the file is a module.</span></pre></div> <p dir="auto">Use <a href="#compileresults"><code>CompileResults</code></a> to access the values.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type" class="anchor" aria-label="Permalink: Type" href="#type"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="interface CompileResultMap { // Note: if `Value` from `VFile` is changed, this should too. Uint8Array: Uint8Array string: string }"><pre><span class="pl-k">interface</span> <span class="pl-smi">CompileResultMap</span> <span class="pl-kos">{</span> <span class="pl-c">// Note: if `Value` from `VFile` is changed, this should too.</span> <span class="pl-c1">Uint8Array</span>: <span class="pl-smi">Uint8Array</span> <span class="pl-c1">string</span>: <span class="pl-smi">string</span> <span class="pl-kos">}</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>CompileResults</code></h3><a id="user-content-compileresults" class="anchor" aria-label="Permalink: CompileResults" href="#compileresults"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Acceptable results from compilers (TypeScript type).</p> <p dir="auto">To register custom results, add them to <a href="#compileresultmap"><code>CompileResultMap</code></a>.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-1" class="anchor" aria-label="Permalink: Type" href="#type-1"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="type CompileResults = CompileResultMap[keyof CompileResultMap]"><pre><span class="pl-k">type</span> <span class="pl-smi">CompileResults</span> <span class="pl-c1">=</span> <span class="pl-smi">CompileResultMap</span><span class="pl-kos">[</span><span class="pl-k">keyof</span> <span class="pl-smi">CompileResultMap</span><span class="pl-kos">]</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Compiler</code></h3><a id="user-content-compiler" class="anchor" aria-label="Permalink: Compiler" href="#compiler"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">A <strong>compiler</strong> handles the compiling of a syntax tree to something else (in most cases, text) (TypeScript type).</p> <p dir="auto">It is used in the stringify phase and called with a <a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a> and <a href="https://github.com/vfile/vfile"><code>VFile</code></a> representation of the document to compile. It should return the textual representation of the given tree (typically <code>string</code>).</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: unified typically compiles by serializing: most compilers return <code>string</code> (or <code>Uint8Array</code>). Some compilers, such as the one configured with <a href="https://github.com/rehypejs/rehype-react"><code>rehype-react</code></a>, return other values (in this case, a React tree). If you’re using a compiler that doesn’t serialize, expect different result values.</p> <p dir="auto">To register custom results in TypeScript, add them to <a href="#compileresultmap"><code>CompileResultMap</code></a>.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-2" class="anchor" aria-label="Permalink: Type" href="#type-2"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="type Compiler< Tree extends Node = Node, Result extends CompileResults = CompileResults > = (tree: Tree, file: VFile) => Result"><pre><span class="pl-k">type</span> <span class="pl-smi">Compiler</span><span class="pl-c1"><</span> <span class="pl-smi">Tree</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> <span class="pl-c1">=</span> <span class="pl-smi">Node</span><span class="pl-kos">,</span> <span class="pl-smi">Result</span> <span class="pl-k">extends</span> <span class="pl-smi">CompileResults</span> <span class="pl-c1">=</span> <span class="pl-smi">CompileResults</span> <span class="pl-c1">></span> <span class="pl-c1">=</span> <span class="pl-kos">(</span><span class="pl-s1">tree</span>: <span class="pl-smi">Tree</span><span class="pl-kos">,</span> <span class="pl-s1">file</span>: <span class="pl-smi">VFile</span><span class="pl-kos">)</span> <span class="pl-c1">=></span> <span class="pl-smi">Result</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Data</code></h3><a id="user-content-data" class="anchor" aria-label="Permalink: Data" href="#data"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Interface of known data that can be supported by all plugins (TypeScript type).</p> <p dir="auto">Typically, options can be given to a specific plugin, but sometimes it makes sense to have information shared with several plugins. For example, a list of HTML elements that are self-closing, which is needed during all phases.</p> <p dir="auto">To type this, do something like:</p> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="declare module 'unified' { interface Data { htmlVoidElements?: Array<string> | undefined } } export {} // You may not need this, but it makes sure the file is a module."><pre><span class="pl-k">declare</span> module <span class="pl-s">'unified'</span> <span class="pl-kos">{</span> <span class="pl-k">interface</span> <span class="pl-smi">Data</span> <span class="pl-kos">{</span> <span class="pl-c1">htmlVoidElements</span>?: <span class="pl-smi">Array</span><span class="pl-c1"><</span><span class="pl-smi">string</span><span class="pl-c1">></span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span> <span class="pl-k">export</span> <span class="pl-kos">{</span><span class="pl-kos">}</span> <span class="pl-c">// You may not need this, but it makes sure the file is a module.</span></pre></div> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-3" class="anchor" aria-label="Permalink: Type" href="#type-3"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="interface Data { settings?: Settings | undefined }"><pre><span class="pl-k">interface</span> <span class="pl-smi">Data</span> <span class="pl-kos">{</span> <span class="pl-c1">settings</span>?: <span class="pl-smi">Settings</span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span> <span class="pl-kos">}</span></pre></div> <p dir="auto">See <a href="#settings"><code>Settings</code></a> for more info.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Parser</code></h3><a id="user-content-parser" class="anchor" aria-label="Permalink: Parser" href="#parser"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">A <strong>parser</strong> handles the parsing of text to a syntax tree (TypeScript type).</p> <p dir="auto">It is used in the parse phase and is called with a <code>string</code> and <a href="https://github.com/vfile/vfile"><code>VFile</code></a> of the document to parse. It must return the syntax tree representation of the given file (<a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a>).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-4" class="anchor" aria-label="Permalink: Type" href="#type-4"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="type Parser<Tree extends Node = Node> = (document: string, file: VFile) => Tree"><pre><span class="pl-k">type</span> <span class="pl-smi">Parser</span><span class="pl-c1"><</span><span class="pl-smi">Tree</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> <span class="pl-c1">=</span> <span class="pl-smi">Node</span><span class="pl-c1">></span> <span class="pl-c1">=</span> <span class="pl-kos">(</span><span class="pl-s1">document</span>: <span class="pl-smi">string</span><span class="pl-kos">,</span> <span class="pl-s1">file</span>: <span class="pl-smi">VFile</span><span class="pl-kos">)</span> <span class="pl-c1">=></span> <span class="pl-smi">Tree</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Pluggable</code></h3><a id="user-content-pluggable" class="anchor" aria-label="Permalink: Pluggable" href="#pluggable"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Union of the different ways to add plugins and settings (TypeScript type).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-5" class="anchor" aria-label="Permalink: Type" href="#type-5"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="type Pluggable = | Plugin<Array<any>, any, any> | PluginTuple<Array<any>, any, any> | Preset"><pre><span class="pl-k">type</span> <span class="pl-smi">Pluggable</span> <span class="pl-c1">=</span> <span class="pl-c1">|</span> <span class="pl-smi">Plugin</span><span class="pl-c1"><</span><span class="pl-smi">Array</span><span class="pl-c1"><</span><span class="pl-smi">any</span><span class="pl-c1">></span><span class="pl-kos">,</span> <span class="pl-smi">any</span><span class="pl-kos">,</span> <span class="pl-smi">any</span><span class="pl-c1">></span> <span class="pl-c1">|</span> <span class="pl-smi">PluginTuple</span><span class="pl-c1"><</span><span class="pl-smi">Array</span><span class="pl-c1"><</span><span class="pl-smi">any</span><span class="pl-c1">></span><span class="pl-kos">,</span> <span class="pl-smi">any</span><span class="pl-kos">,</span> <span class="pl-smi">any</span><span class="pl-c1">></span> <span class="pl-c1">|</span> <span class="pl-smi">Preset</span></pre></div> <p dir="auto">See <a href="#plugin"><code>Plugin</code></a>, <a href="#plugintuple"><code>PluginTuple</code></a>, and <a href="#preset"><code>Preset</code></a> for more info.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>PluggableList</code></h3><a id="user-content-pluggablelist" class="anchor" aria-label="Permalink: PluggableList" href="#pluggablelist"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">List of plugins and presets (TypeScript type).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-6" class="anchor" aria-label="Permalink: Type" href="#type-6"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="type PluggableList = Array<Pluggable>"><pre><span class="pl-k">type</span> <span class="pl-smi">PluggableList</span> <span class="pl-c1">=</span> <span class="pl-smi">Array</span><span class="pl-c1"><</span><span class="pl-smi">Pluggable</span><span class="pl-c1">></span></pre></div> <p dir="auto">See <a href="#pluggable"><code>Pluggable</code></a> for more info.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Plugin</code></h3><a id="user-content-plugin" class="anchor" aria-label="Permalink: Plugin" href="#plugin"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Single plugin (TypeScript type).</p> <p dir="auto">Plugins configure the processors they are applied on in the following ways:</p> <ul dir="auto"> <li>they change the processor, such as the parser, the compiler, or by configuring data</li> <li>they specify how to handle trees and files</li> </ul> <p dir="auto">In practice, they are functions that can receive options and configure the processor (<code>this</code>).</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: plugins are called when the processor is <em>frozen</em>, not when they are applied.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-7" class="anchor" aria-label="Permalink: Type" href="#type-7"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="type Plugin< PluginParameters extends unknown[] = [], Input extends Node | string | undefined = Node, Output = Input > = ( this: Processor, ...parameters: PluginParameters ) => Input extends string // Parser. ? Output extends Node | undefined ? undefined | void : never : Output extends CompileResults // Compiler. ? Input extends Node | undefined ? undefined | void : never : // Inspect/transform. | Transformer< Input extends Node ? Input : Node, Output extends Node ? Output : Node > | undefined | void"><pre><span class="pl-k">type</span> <span class="pl-smi">Plugin</span><span class="pl-c1"><</span> <span class="pl-smi">PluginParameters</span> <span class="pl-k">extends</span> <span class="pl-smi">unknown</span><span class="pl-kos">[</span><span class="pl-kos">]</span> <span class="pl-c1">=</span> <span class="pl-kos">[</span><span class="pl-kos">]</span><span class="pl-kos">,</span> <span class="pl-smi">Input</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> <span class="pl-c1">|</span> <span class="pl-smi">string</span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span> <span class="pl-c1">=</span> <span class="pl-smi">Node</span><span class="pl-kos">,</span> <span class="pl-smi">Output</span> <span class="pl-c1">=</span> <span class="pl-smi">Input</span> <span class="pl-c1">></span> <span class="pl-c1">=</span> <span class="pl-kos">(</span> <span class="pl-smi">this</span>: <span class="pl-smi">Processor</span><span class="pl-kos">,</span> ...<span class="pl-s1">parameters</span>: <span class="pl-smi">PluginParameters</span> <span class="pl-kos">)</span> <span class="pl-c1">=></span> <span class="pl-smi">Input</span> <span class="pl-k">extends</span> <span class="pl-smi">string</span> <span class="pl-c">// Parser.</span> ? <span class="pl-smi">Output</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span> ? <span class="pl-c1">undefined</span> <span class="pl-c1">|</span> <span class="pl-smi"><span class="pl-k">void</span></span> : <span class="pl-smi">never</span> : <span class="pl-smi">Output</span> <span class="pl-k">extends</span> <span class="pl-smi">CompileResults</span> <span class="pl-c">// Compiler.</span> ? <span class="pl-smi">Input</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span> ? <span class="pl-c1">undefined</span> <span class="pl-c1">|</span> <span class="pl-smi"><span class="pl-k">void</span></span> : <span class="pl-smi">never</span> : <span class="pl-c">// Inspect/transform.</span> <span class="pl-c1">|</span> <span class="pl-smi">Transformer</span><span class="pl-c1"><</span> <span class="pl-smi">Input</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> ? <span class="pl-smi">Input</span> : <span class="pl-smi">Node</span><span class="pl-kos">,</span> <span class="pl-smi">Output</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> ? <span class="pl-smi">Output</span> : <span class="pl-smi">Node</span> <span class="pl-c1">></span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span> <span class="pl-c1">|</span> <span class="pl-smi"><span class="pl-k">void</span></span></pre></div> <p dir="auto">See <a href="#transformer"><code>Transformer</code></a> for more info.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-9" class="anchor" aria-label="Permalink: Example" href="#example-9"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><code>move.js</code>:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="/** * @import {Plugin} from 'unified' */ /** * @typedef Options * Configuration (required). * @property {string} extname * File extension to use (must start with `.`). */ /** @type {Plugin<[Options]>} */ export function move(options) { if (!options || !options.extname) { throw new Error('Missing `options.extname`') } return function (_, file) { if (file.extname && file.extname !== options.extname) { file.extname = options.extname } } }"><pre><span class="pl-c">/**</span> <span class="pl-c"> * <span class="pl-k">@import</span> {Plugin} from 'unified'</span> <span class="pl-c"> */</span> <span class="pl-c">/**</span> <span class="pl-c"> * <span class="pl-k">@typedef</span> Options</span> <span class="pl-c"> * Configuration (required).</span> <span class="pl-c"> * <span class="pl-k">@property</span> {<span class="pl-smi">string</span>} extname</span> <span class="pl-c"> * File extension to use (must start with `.`).</span> <span class="pl-c"> */</span> <span class="pl-c">/** <span class="pl-k">@type</span> {<span class="pl-smi">Plugin<[Options]></span>} */</span> <span class="pl-k">export</span> <span class="pl-k">function</span> <span class="pl-en">move</span><span class="pl-kos">(</span><span class="pl-s1">options</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-k">if</span> <span class="pl-kos">(</span><span class="pl-c1">!</span><span class="pl-s1">options</span> <span class="pl-c1">||</span> <span class="pl-c1">!</span><span class="pl-s1">options</span><span class="pl-kos">.</span><span class="pl-c1">extname</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-k">throw</span> <span class="pl-k">new</span> <span class="pl-v">Error</span><span class="pl-kos">(</span><span class="pl-s">'Missing `options.extname`'</span><span class="pl-kos">)</span> <span class="pl-kos">}</span> <span class="pl-k">return</span> <span class="pl-k">function</span> <span class="pl-kos">(</span><span class="pl-s1">_</span><span class="pl-kos">,</span> <span class="pl-s1">file</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-k">if</span> <span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">.</span><span class="pl-c1">extname</span> <span class="pl-c1">&&</span> <span class="pl-s1">file</span><span class="pl-kos">.</span><span class="pl-c1">extname</span> <span class="pl-c1">!==</span> <span class="pl-s1">options</span><span class="pl-kos">.</span><span class="pl-c1">extname</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-s1">file</span><span class="pl-kos">.</span><span class="pl-c1">extname</span> <span class="pl-c1">=</span> <span class="pl-s1">options</span><span class="pl-kos">.</span><span class="pl-c1">extname</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span></pre></div> <p dir="auto"><code>example.md</code>:</p> <div class="highlight highlight-text-md notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="# Hello, world!"><pre><span class="pl-mh"># <span class="pl-en">Hello, world!</span></span></pre></div> <p dir="auto"><code>example.js</code>:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import rehypeStringify from 'rehype-stringify' import remarkParse from 'remark-parse' import remarkRehype from 'remark-rehype' import {read, write} from 'to-vfile' import {unified} from 'unified' import {reporter} from 'vfile-reporter' import {move} from './move.js' const file = await unified() .use(remarkParse) .use(remarkRehype) .use(move, {extname: '.html'}) .use(rehypeStringify) .process(await read('example.md')) console.error(reporter(file)) await write(file) // Written to `example.html`."><pre><span class="pl-k">import</span> <span class="pl-s1">rehypeStringify</span> <span class="pl-k">from</span> <span class="pl-s">'rehype-stringify'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkParse</span> <span class="pl-k">from</span> <span class="pl-s">'remark-parse'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkRehype</span> <span class="pl-k">from</span> <span class="pl-s">'remark-rehype'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">read</span><span class="pl-kos">,</span> <span class="pl-s1">write</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'to-vfile'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">reporter</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'vfile-reporter'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">move</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'./move.js'</span> <span class="pl-k">const</span> <span class="pl-s1">file</span> <span class="pl-c1">=</span> <span class="pl-k">await</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkParse</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkRehype</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">move</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">extname</span>: <span class="pl-s">'.html'</span><span class="pl-kos">}</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">rehypeStringify</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">process</span><span class="pl-kos">(</span><span class="pl-k">await</span> <span class="pl-en">read</span><span class="pl-kos">(</span><span class="pl-s">'example.md'</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">error</span><span class="pl-kos">(</span><span class="pl-en">reporter</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-k">await</span> <span class="pl-en">write</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span> <span class="pl-c">// Written to `example.html`.</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-adblock notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="example.md: no issues found"><pre>example.md: no issues found</pre></div> <p dir="auto">…and in <code>example.html</code>:</p> <div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="<h1>Hello, world!</h1>"><pre><span class="pl-kos"><</span><span class="pl-ent">h1</span><span class="pl-kos">></span>Hello, world!<span class="pl-kos"></</span><span class="pl-ent">h1</span><span class="pl-kos">></span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>PluginTuple</code></h3><a id="user-content-plugintuple" class="anchor" aria-label="Permalink: PluginTuple" href="#plugintuple"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Tuple of a plugin and its configuration (TypeScript type).</p> <p dir="auto">The first item is a plugin, the rest are its parameters.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-8" class="anchor" aria-label="Permalink: Type" href="#type-8"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="type PluginTuple< TupleParameters extends unknown[] = [], Input extends Node | string | undefined = undefined, Output = undefined > = [ plugin: Plugin<TupleParameters, Input, Output>, ...parameters: TupleParameters ]"><pre><span class="pl-k">type</span> <span class="pl-smi">PluginTuple</span><span class="pl-c1"><</span> <span class="pl-smi">TupleParameters</span> <span class="pl-k">extends</span> <span class="pl-smi">unknown</span><span class="pl-kos">[</span><span class="pl-kos">]</span> <span class="pl-c1">=</span> <span class="pl-kos">[</span><span class="pl-kos">]</span><span class="pl-kos">,</span> <span class="pl-smi">Input</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> <span class="pl-c1">|</span> <span class="pl-smi">string</span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span> <span class="pl-c1">=</span> <span class="pl-c1">undefined</span><span class="pl-kos">,</span> <span class="pl-smi">Output</span> <span class="pl-c1">=</span> <span class="pl-c1">undefined</span> <span class="pl-c1">></span> <span class="pl-c1">=</span> <span class="pl-kos">[</span> <span class="pl-s1">plugin</span>: <span class="pl-smi">Plugin</span><span class="pl-c1"><</span><span class="pl-smi">TupleParameters</span><span class="pl-kos">,</span> <span class="pl-smi">Input</span><span class="pl-kos">,</span> <span class="pl-smi">Output</span><span class="pl-c1">></span><span class="pl-kos">,</span> ...<span class="pl-s1">parameters</span>: <span class="pl-smi">TupleParameters</span> <span class="pl-kos">]</span></pre></div> <p dir="auto">See <a href="#plugin"><code>Plugin</code></a> for more info.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Preset</code></h3><a id="user-content-preset" class="anchor" aria-label="Permalink: Preset" href="#preset"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Sharable configuration (TypeScript type).</p> <p dir="auto">They can contain plugins and settings.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Fields</h6><a id="user-content-fields" class="anchor" aria-label="Permalink: Fields" href="#fields"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>plugins</code> (<a href="#pluggablelist"><code>PluggableList</code></a>, optional) — list of plugins and presets</li> <li><code>settings</code> (<a href="#data"><code>Data</code></a>, optional) — shared settings for parsers and compilers</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-10" class="anchor" aria-label="Permalink: Example" href="#example-10"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><code>preset.js</code>:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="/** * @import {Preset} from 'unified' */ import remarkCommentConfig from 'remark-comment-config' import remarkLicense from 'remark-license' import remarkPresetLintConsistent from 'remark-preset-lint-consistent' import remarkPresetLintRecommended from 'remark-preset-lint-recommended' import remarkToc from 'remark-toc' /** @type {Preset} */ const preset = { plugins: [ remarkPresetLintRecommended, remarkPresetLintConsistent, remarkCommentConfig, [remarkToc, {maxDepth: 3, tight: true}], remarkLicense ], settings: {bullet: '*', emphasis: '*', fences: true}, } export default preset"><pre><span class="pl-c">/**</span> <span class="pl-c"> * <span class="pl-k">@import</span> {Preset} from 'unified'</span> <span class="pl-c"> */</span> <span class="pl-k">import</span> <span class="pl-s1">remarkCommentConfig</span> <span class="pl-k">from</span> <span class="pl-s">'remark-comment-config'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkLicense</span> <span class="pl-k">from</span> <span class="pl-s">'remark-license'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkPresetLintConsistent</span> <span class="pl-k">from</span> <span class="pl-s">'remark-preset-lint-consistent'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkPresetLintRecommended</span> <span class="pl-k">from</span> <span class="pl-s">'remark-preset-lint-recommended'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkToc</span> <span class="pl-k">from</span> <span class="pl-s">'remark-toc'</span> <span class="pl-c">/** <span class="pl-k">@type</span> {<span class="pl-smi">Preset</span>} */</span> <span class="pl-k">const</span> <span class="pl-s1">preset</span> <span class="pl-c1">=</span> <span class="pl-kos">{</span> <span class="pl-c1">plugins</span>: <span class="pl-kos">[</span> <span class="pl-s1">remarkPresetLintRecommended</span><span class="pl-kos">,</span> <span class="pl-s1">remarkPresetLintConsistent</span><span class="pl-kos">,</span> <span class="pl-s1">remarkCommentConfig</span><span class="pl-kos">,</span> <span class="pl-kos">[</span><span class="pl-s1">remarkToc</span><span class="pl-kos">,</span> <span class="pl-kos">{</span><span class="pl-c1">maxDepth</span>: <span class="pl-c1">3</span><span class="pl-kos">,</span> <span class="pl-c1">tight</span>: <span class="pl-c1">true</span><span class="pl-kos">}</span><span class="pl-kos">]</span><span class="pl-kos">,</span> <span class="pl-s1">remarkLicense</span> <span class="pl-kos">]</span><span class="pl-kos">,</span> <span class="pl-c1">settings</span>: <span class="pl-kos">{</span><span class="pl-c1">bullet</span>: <span class="pl-s">'*'</span><span class="pl-kos">,</span> <span class="pl-c1">emphasis</span>: <span class="pl-s">'*'</span><span class="pl-kos">,</span> <span class="pl-c1">fences</span>: <span class="pl-c1">true</span><span class="pl-kos">}</span><span class="pl-kos">,</span> <span class="pl-kos">}</span> <span class="pl-k">export</span> <span class="pl-k">default</span> <span class="pl-s1">preset</span></pre></div> <p dir="auto"><code>example.md</code>:</p> <div class="highlight highlight-text-md notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="# Hello, world! _Emphasis_ and **importance**. ## Table of contents ## API ## License"><pre><span class="pl-mh"># <span class="pl-en">Hello, world!</span></span> <span class="pl-s">_</span>Emphasis<span class="pl-s">_</span> and <span class="pl-s">**</span>importance<span class="pl-s">**</span>. <span class="pl-mh">## <span class="pl-en">Table of contents</span></span> <span class="pl-mh">## <span class="pl-en">API</span></span> <span class="pl-mh">## <span class="pl-en">License</span></span></pre></div> <p dir="auto"><code>example.js</code>:</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import {remark} from 'remark' import {read, write} from 'to-vfile' import {reporter} from 'vfile-reporter' import preset from './preset.js' const file = await remark() .use(preset) .process(await read('example.md')) console.error(reporter(file)) await write(file)"><pre><span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">remark</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'remark'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">read</span><span class="pl-kos">,</span> <span class="pl-s1">write</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'to-vfile'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">reporter</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'vfile-reporter'</span> <span class="pl-k">import</span> <span class="pl-s1">preset</span> <span class="pl-k">from</span> <span class="pl-s">'./preset.js'</span> <span class="pl-k">const</span> <span class="pl-s1">file</span> <span class="pl-c1">=</span> <span class="pl-k">await</span> <span class="pl-en">remark</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">preset</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">process</span><span class="pl-kos">(</span><span class="pl-k">await</span> <span class="pl-en">read</span><span class="pl-kos">(</span><span class="pl-s">'example.md'</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">error</span><span class="pl-kos">(</span><span class="pl-en">reporter</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-k">await</span> <span class="pl-en">write</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-adblock notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="example.md: no issues found"><pre>example.md: no issues found</pre></div> <p dir="auto"><code>example.md</code> now contains:</p> <div class="highlight highlight-text-md notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="# Hello, world! *Emphasis* and **importance**. ## Table of contents * [API](#api) * [License](#license) ## API ## License [MIT](license) © [Titus Wormer](https://wooorm.com)"><pre><span class="pl-mh"># <span class="pl-en">Hello, world!</span></span> <span class="pl-s">*</span>Emphasis<span class="pl-s">*</span> and <span class="pl-s">**</span>importance<span class="pl-s">**</span>. <span class="pl-mh">## <span class="pl-en">Table of contents</span></span> <span class="pl-v">*</span> <span class="pl-s">[</span>API<span class="pl-s">]</span><span class="pl-s">(</span><span class="pl-corl">#api</span><span class="pl-s">)</span> <span class="pl-v">*</span> <span class="pl-s">[</span>License<span class="pl-s">]</span><span class="pl-s">(</span><span class="pl-corl">#license</span><span class="pl-s">)</span> <span class="pl-mh">## <span class="pl-en">API</span></span> <span class="pl-mh">## <span class="pl-en">License</span></span> <span class="pl-s">[</span>MIT<span class="pl-s">]</span><span class="pl-s">(</span><span class="pl-corl">license</span><span class="pl-s">)</span> © <span class="pl-s">[</span>Titus Wormer<span class="pl-s">]</span><span class="pl-s">(</span><span class="pl-corl">https://wooorm.com</span><span class="pl-s">)</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>ProcessCallback</code></h3><a id="user-content-processcallback" class="anchor" aria-label="Permalink: ProcessCallback" href="#processcallback"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Callback called when the process is done (TypeScript type).</p> <p dir="auto">Called with either an error or a result.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-8" class="anchor" aria-label="Permalink: Parameters" href="#parameters-8"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>error</code> (<code>Error</code>, optional) — fatal error</li> <li><code>file</code> (<a href="https://github.com/vfile/vfile"><code>VFile</code></a>, optional) — processed file</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-10" class="anchor" aria-label="Permalink: Returns" href="#returns-10"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Nothing (<code>undefined</code>).</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Example</h6><a id="user-content-example-11" class="anchor" aria-label="Permalink: Example" href="#example-11"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This example shows how <code>process</code> can be used to process a file with a callback.</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import remarkGithub from 'remark-github' import remarkParse from 'remark-parse' import remarkStringify from 'remark-stringify' import {unified} from 'unified' import {reporter} from 'vfile-reporter' unified() .use(remarkParse) .use(remarkGithub) .use(remarkStringify) .process('@unifiedjs', function (error, file) { if (error) throw error if (file) { console.error(reporter(file)) console.log(String(file)) } })"><pre><span class="pl-k">import</span> <span class="pl-s1">remarkGithub</span> <span class="pl-k">from</span> <span class="pl-s">'remark-github'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkParse</span> <span class="pl-k">from</span> <span class="pl-s">'remark-parse'</span> <span class="pl-k">import</span> <span class="pl-s1">remarkStringify</span> <span class="pl-k">from</span> <span class="pl-s">'remark-stringify'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">unified</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'unified'</span> <span class="pl-k">import</span> <span class="pl-kos">{</span><span class="pl-s1">reporter</span><span class="pl-kos">}</span> <span class="pl-k">from</span> <span class="pl-s">'vfile-reporter'</span> <span class="pl-en">unified</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkParse</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkGithub</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">use</span><span class="pl-kos">(</span><span class="pl-s1">remarkStringify</span><span class="pl-kos">)</span> <span class="pl-kos">.</span><span class="pl-en">process</span><span class="pl-kos">(</span><span class="pl-s">'@unifiedjs'</span><span class="pl-kos">,</span> <span class="pl-k">function</span> <span class="pl-kos">(</span><span class="pl-s1">error</span><span class="pl-kos">,</span> <span class="pl-s1">file</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-k">if</span> <span class="pl-kos">(</span><span class="pl-s1">error</span><span class="pl-kos">)</span> <span class="pl-k">throw</span> <span class="pl-s1">error</span> <span class="pl-k">if</span> <span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">error</span><span class="pl-kos">(</span><span class="pl-en">reporter</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-v">String</span><span class="pl-kos">(</span><span class="pl-s1">file</span><span class="pl-kos">)</span><span class="pl-kos">)</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span><span class="pl-kos">)</span></pre></div> <p dir="auto">Yields:</p> <div class="highlight highlight-text-adblock notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="no issues found"><pre>no issues found</pre></div> <div class="highlight highlight-text-md notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="[**@unifiedjs**](https://github.com/unifiedjs)"><pre><span class="pl-s">[</span><span class="pl-s">**</span><span class="pl-s">@<span class="pl-corl">unifiedjs</span></span><span class="pl-s">**</span><span class="pl-s">]</span><span class="pl-s">(</span><span class="pl-corl">https://github.com/unifiedjs</span><span class="pl-s">)</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Processor</code></h3><a id="user-content-processor-1" class="anchor" aria-label="Permalink: Processor" href="#processor-1"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Type of a <a href="#processor"><code>processor</code></a> (TypeScript type).</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>RunCallback</code></h3><a id="user-content-runcallback" class="anchor" aria-label="Permalink: RunCallback" href="#runcallback"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Callback called when transformers are done (TypeScript type).</p> <p dir="auto">Called with either an error or results.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-9" class="anchor" aria-label="Permalink: Parameters" href="#parameters-9"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>error</code> (<code>Error</code>, optional) — fatal error</li> <li><code>tree</code> (<a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a>, optional) — transformed tree</li> <li><code>file</code> (<a href="https://github.com/vfile/vfile"><code>VFile</code></a>, optional) — file</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-11" class="anchor" aria-label="Permalink: Returns" href="#returns-11"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Nothing (<code>undefined</code>).</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Settings</code></h3><a id="user-content-settings" class="anchor" aria-label="Permalink: Settings" href="#settings"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Interface of known extra options, that can be supported by parser and compilers.</p> <p dir="auto">This exists so that users can use packages such as <code>remark</code>, which configure both parsers and compilers (in this case <code>remark-parse</code> and <code>remark-stringify</code>), and still provide options for them.</p> <p dir="auto">When you make parsers or compilers, that could be packaged up together, you should support <code>this.data('settings')</code> as input and merge it with explicitly passed <code>options</code>. Then, to type it, using <code>remark-stringify</code> as an example, do something like:</p> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="declare module 'unified' { interface Settings { bullet: '*' | '+' | '-' // … } } export {} // You may not need this, but it makes sure the file is a module."><pre><span class="pl-k">declare</span> module <span class="pl-s">'unified'</span> <span class="pl-kos">{</span> <span class="pl-k">interface</span> <span class="pl-smi">Settings</span> <span class="pl-kos">{</span> <span class="pl-c1">bullet</span>: <span class="pl-s">'*'</span> <span class="pl-c1">|</span> <span class="pl-s">'+'</span> <span class="pl-c1">|</span> <span class="pl-s">'-'</span> <span class="pl-c">// …</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span> <span class="pl-k">export</span> <span class="pl-kos">{</span><span class="pl-kos">}</span> <span class="pl-c">// You may not need this, but it makes sure the file is a module.</span></pre></div> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-9" class="anchor" aria-label="Permalink: Type" href="#type-9"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="interface Settings {}"><pre><span class="pl-k">interface</span> <span class="pl-smi">Settings</span> <span class="pl-kos">{</span><span class="pl-kos">}</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>TransformCallback</code></h3><a id="user-content-transformcallback" class="anchor" aria-label="Permalink: TransformCallback" href="#transformcallback"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Callback passed to transforms (TypeScript type).</p> <p dir="auto">If the signature of a <code>transformer</code> accepts a third argument, the transformer may perform asynchronous operations, and must call it.</p> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Parameters</h6><a id="user-content-parameters-10" class="anchor" aria-label="Permalink: Parameters" href="#parameters-10"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>error</code> (<code>Error</code>, optional) — fatal error to stop the process</li> <li><code>tree</code> (<a href="https://github.com/syntax-tree/unist#node"><code>Node</code></a>, optional) — new, changed, tree</li> <li><code>file</code> (<a href="https://github.com/vfile/vfile"><code>VFile</code></a>, optional) — new, changed, file</li> </ul> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Returns</h6><a id="user-content-returns-12" class="anchor" aria-label="Permalink: Returns" href="#returns-12"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Nothing (<code>undefined</code>).</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto"><code>Transformer</code></h3><a id="user-content-transformer" class="anchor" aria-label="Permalink: Transformer" href="#transformer"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Transformers handle syntax trees and files (TypeScript type).</p> <p dir="auto">They are functions that are called each time a syntax tree and file are passed through the run phase. When an error occurs in them (either because it’s thrown, returned, rejected, or passed to <code>next</code>), the process stops.</p> <p dir="auto">The run phase is handled by <a href="https://github.com/wooorm/trough#function-fninput-next"><code>trough</code></a>, see its documentation for the exact semantics of these functions.</p> <blockquote> <p dir="auto">👉 <strong>Note</strong>: you should likely ignore <code>next</code>: don’t accept it. it supports callback-style async work. But promises are likely easier to reason about.</p> </blockquote> <div class="markdown-heading" dir="auto"><h6 tabindex="-1" class="heading-element" dir="auto">Type</h6><a id="user-content-type-10" class="anchor" aria-label="Permalink: Type" href="#type-10"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-ts notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="type Transformer< Input extends Node = Node, Output extends Node = Input > = ( tree: Input, file: VFile, next: TransformCallback<Output> ) => | Promise<Output | undefined> | Output | Error | undefined"><pre><span class="pl-k">type</span> <span class="pl-smi">Transformer</span><span class="pl-c1"><</span> <span class="pl-smi">Input</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> <span class="pl-c1">=</span> <span class="pl-smi">Node</span><span class="pl-kos">,</span> <span class="pl-smi">Output</span> <span class="pl-k">extends</span> <span class="pl-smi">Node</span> <span class="pl-c1">=</span> <span class="pl-smi">Input</span> <span class="pl-c1">></span> <span class="pl-c1">=</span> <span class="pl-kos">(</span> <span class="pl-s1">tree</span>: <span class="pl-smi">Input</span><span class="pl-kos">,</span> <span class="pl-s1">file</span>: <span class="pl-smi">VFile</span><span class="pl-kos">,</span> <span class="pl-s1">next</span>: <span class="pl-smi">TransformCallback</span><span class="pl-c1"><</span><span class="pl-smi">Output</span><span class="pl-c1">></span> <span class="pl-kos">)</span> <span class="pl-c1">=></span> <span class="pl-c1">|</span> <span class="pl-smi">Promise</span><span class="pl-c1"><</span><span class="pl-smi">Output</span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span><span class="pl-c1">></span> <span class="pl-c1">|</span> <span class="pl-smi">Output</span> <span class="pl-c1">|</span> <span class="pl-smi">Error</span> <span class="pl-c1">|</span> <span class="pl-c1">undefined</span></pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Types</h2><a id="user-content-types" class="anchor" aria-label="Permalink: Types" href="#types"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">This package is fully typed with <a href="https://www.typescriptlang.org" rel="nofollow">TypeScript</a>. It exports the additional types <a href="#compileresultmap"><code>CompileResultMap</code></a>, <a href="#compileresults"><code>CompileResults</code></a>, <a href="#compiler"><code>Compiler</code></a>, <a href="#data"><code>Data</code></a>, <a href="#parser"><code>Parser</code></a>, <a href="#pluggable"><code>Pluggable</code></a>, <a href="#pluggablelist"><code>PluggableList</code></a>, <a href="#plugin"><code>Plugin</code></a>, <a href="#plugintuple"><code>PluginTuple</code></a>, <a href="#preset"><code>Preset</code></a>, <a href="#processcallback"><code>ProcessCallback</code></a>, <a href="#processor"><code>Processor</code></a>, <a href="#runcallback"><code>RunCallback</code></a>, <a href="#settings"><code>Settings</code></a>, <a href="#transformcallback"><code>TransformCallback</code></a>, and <a href="#transformer"><code>Transformer</code></a></p> <p dir="auto">For TypeScript to work, it is particularly important to type your plugins correctly. We strongly recommend using the <code>Plugin</code> type with its generics and to use the node types for the syntax trees provided by our packages (as in, <a href="https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/hast"><code>@types/hast</code></a>, <a href="https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/mdast"><code>@types/mdast</code></a>, <a href="https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/nlcst"><code>@types/nlcst</code></a>).</p> <div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="/** * @import {Root as HastRoot} from 'hast' * @import {Root as MdastRoot} from 'mdast' * @import {Plugin} from 'unified' */ /** * @typedef Options * Configuration (optional). * @property {boolean | null | undefined} [someField] * Some option (optional). */ // To type options: /** @type {Plugin<[(Options | null | undefined)?]>} */ export function myPluginAcceptingOptions(options) { const settings = options || {} // `settings` is now `Options`. } // To type a plugin that works on a certain tree, without options: /** @type {Plugin<[], MdastRoot>} */ export function myRemarkPlugin() { return function (tree, file) { // `tree` is `MdastRoot`. } } // To type a plugin that transforms one tree into another: /** @type {Plugin<[], MdastRoot, HastRoot>} */ export function remarkRehype() { return function (tree) { // `tree` is `MdastRoot`. // Result must be `HastRoot`. } } // To type a plugin that defines a parser: /** @type {Plugin<[], string, MdastRoot>} */ export function remarkParse(options) {} // To type a plugin that defines a compiler: /** @type {Plugin<[], HastRoot, string>} */ export function rehypeStringify(options) {}"><pre><span class="pl-c">/**</span> <span class="pl-c"> * <span class="pl-k">@import</span> {Root as HastRoot} from 'hast'</span> <span class="pl-c"> * <span class="pl-k">@import</span> {Root as MdastRoot} from 'mdast'</span> <span class="pl-c"> * <span class="pl-k">@import</span> {Plugin} from 'unified'</span> <span class="pl-c"> */</span> <span class="pl-c">/**</span> <span class="pl-c"> * <span class="pl-k">@typedef</span> Options</span> <span class="pl-c"> * Configuration (optional).</span> <span class="pl-c"> * <span class="pl-k">@property</span> {<span class="pl-smi">boolean | null | undefined</span>} [someField]</span> <span class="pl-c"> * Some option (optional).</span> <span class="pl-c"> */</span> <span class="pl-c">// To type options:</span> <span class="pl-c">/** <span class="pl-k">@type</span> {<span class="pl-smi">Plugin<[(Options | null | undefined)?]></span>} */</span> <span class="pl-k">export</span> <span class="pl-k">function</span> <span class="pl-en">myPluginAcceptingOptions</span><span class="pl-kos">(</span><span class="pl-s1">options</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-k">const</span> <span class="pl-s1">settings</span> <span class="pl-c1">=</span> <span class="pl-s1">options</span> <span class="pl-c1">||</span> <span class="pl-kos">{</span><span class="pl-kos">}</span> <span class="pl-c">// `settings` is now `Options`.</span> <span class="pl-kos">}</span> <span class="pl-c">// To type a plugin that works on a certain tree, without options:</span> <span class="pl-c">/** <span class="pl-k">@type</span> {<span class="pl-smi">Plugin<[], MdastRoot></span>} */</span> <span class="pl-k">export</span> <span class="pl-k">function</span> <span class="pl-en">myRemarkPlugin</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-k">return</span> <span class="pl-k">function</span> <span class="pl-kos">(</span><span class="pl-s1">tree</span><span class="pl-kos">,</span> <span class="pl-s1">file</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-c">// `tree` is `MdastRoot`.</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span> <span class="pl-c">// To type a plugin that transforms one tree into another:</span> <span class="pl-c">/** <span class="pl-k">@type</span> {<span class="pl-smi">Plugin<[], MdastRoot, HastRoot></span>} */</span> <span class="pl-k">export</span> <span class="pl-k">function</span> <span class="pl-en">remarkRehype</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-k">return</span> <span class="pl-k">function</span> <span class="pl-kos">(</span><span class="pl-s1">tree</span><span class="pl-kos">)</span> <span class="pl-kos">{</span> <span class="pl-c">// `tree` is `MdastRoot`.</span> <span class="pl-c">// Result must be `HastRoot`.</span> <span class="pl-kos">}</span> <span class="pl-kos">}</span> <span class="pl-c">// To type a plugin that defines a parser:</span> <span class="pl-c">/** <span class="pl-k">@type</span> {<span class="pl-smi">Plugin<[], string, MdastRoot></span>} */</span> <span class="pl-k">export</span> <span class="pl-k">function</span> <span class="pl-en">remarkParse</span><span class="pl-kos">(</span><span class="pl-s1">options</span><span class="pl-kos">)</span> <span class="pl-kos">{</span><span class="pl-kos">}</span> <span class="pl-c">// To type a plugin that defines a compiler:</span> <span class="pl-c">/** <span class="pl-k">@type</span> {<span class="pl-smi">Plugin<[], HastRoot, string></span>} */</span> <span class="pl-k">export</span> <span class="pl-k">function</span> <span class="pl-en">rehypeStringify</span><span class="pl-kos">(</span><span class="pl-s1">options</span><span class="pl-kos">)</span> <span class="pl-kos">{</span><span class="pl-kos">}</span></pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Compatibility</h2><a id="user-content-compatibility" class="anchor" aria-label="Permalink: Compatibility" href="#compatibility"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Projects maintained by the unified collective are compatible with maintained versions of Node.js.</p> <p dir="auto">When we cut a new major release, we drop support for unmaintained versions of Node. This means we try to keep the current release line, <code>unified@^11</code>, compatible with Node.js 16.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Contribute</h2><a id="user-content-contribute" class="anchor" aria-label="Permalink: Contribute" href="#contribute"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">See <a href="https://github.com/unifiedjs/.github/blob/main/contributing.md"><code>contributing.md</code></a> in <a href="https://github.com/unifiedjs/.github"><code>unifiedjs/.github</code></a> for ways to get started. See <a href="https://github.com/unifiedjs/.github/blob/main/support.md"><code>support.md</code></a> for ways to get help.</p> <p dir="auto">This project has a <a href="https://github.com/unifiedjs/.github/blob/main/code-of-conduct.md">code of conduct</a>. By interacting with this repository, organization, or community you agree to abide by its terms.</p> <p dir="auto">For info on how to submit a security report, see our <a href="https://github.com/unifiedjs/.github/blob/main/security.md">security policy</a>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Sponsor</h2><a id="user-content-sponsor" class="anchor" aria-label="Permalink: Sponsor" href="#sponsor"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Support this effort and give back by sponsoring on <a href="https://opencollective.com/unified" rel="nofollow">OpenCollective</a>!</p> <markdown-accessiblity-table><table> <tbody><tr valign="middle"> <td width="20%" align="center" rowspan="2" colspan="2"> <a href="https://vercel.com" rel="nofollow">Vercel</a><br><br> <a href="https://vercel.com" rel="nofollow"><img src="https://avatars1.githubusercontent.com/u/14985020?s=256&v=4" width="128" style="max-width: 100%;"></a> </td> <td width="20%" align="center" rowspan="2" colspan="2"> <a href="https://motif.land" rel="nofollow">Motif</a><br><br> <a href="https://motif.land" rel="nofollow"><img src="https://avatars1.githubusercontent.com/u/74457950?s=256&v=4" width="128" style="max-width: 100%;"></a> </td> <td width="20%" align="center" rowspan="2" colspan="2"> <a href="https://www.hashicorp.com" 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<br><br> </td> </tr> </tbody></table></markdown-accessiblity-table> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Acknowledgments</h2><a id="user-content-acknowledgments" class="anchor" aria-label="Permalink: Acknowledgments" href="#acknowledgments"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Preliminary work for unified was done <a href="https://github.com/retextjs/retext/commit/8fcb1f">in 2014</a> for <strong><a href="https://github.com/retextjs/retext">retext</a></strong> and inspired by <a href="https://github.com/segmentio/ware"><code>ware</code></a>. Further incubation happened in <strong><a href="https://github.com/remarkjs/remark">remark</a></strong>. The project was finally <a href="https://github.com/remarkjs/remark/commit/9892ec">externalised</a> in 2015 and <a href="https://github.com/unifiedjs/unified/commit/2ba1cf">published</a> as <code>unified</code>. The project was authored by <strong><a href="https://github.com/wooorm">@wooorm</a></strong>.</p> <p dir="auto">Although <code>unified</code> since moved its plugin architecture to <a href="https://github.com/wooorm/trough#function-fninput-next"><code>trough</code></a>, thanks to <strong><a href="https://github.com/calvinfo">@calvinfo</a></strong>, <strong><a href="https://github.com/ianstormtaylor">@ianstormtaylor</a></strong>, and others for their work on <a href="https://github.com/segmentio/ware"><code>ware</code></a>, as it was a huge initial inspiration.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">License</h2><a id="user-content-license" class="anchor" aria-label="Permalink: License" href="#license"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="/unifiedjs/unified/blob/main/license">MIT</a> © <a href="https://wooorm.com" rel="nofollow">Titus Wormer</a></p> </article></div></div></div></div></div>   <script type="application/json" id="__PRIMER_DATA_:R0:__">{"resolvedServerColorMode":"day"}</script></div> </react-partial> <input type="hidden" data-csrf="true" value="jsy4eYwGqlQLMGi9OVfFcUYsDgjO0hPQNrDLaHyoGBBlXqATCz4u/zrhhcD/50gr1kqLNOp4Mssp7A8Fx5s53A==" /> </div> <div data-view-component="true" class="Layout-sidebar"> <div class="BorderGrid about-margin" data-pjax> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <div class="hide-sm hide-md"> <h2 class="mb-3 h4">About</h2> <p class="f4 my-3"> ☔️ interface for parsing, inspecting, transforming, and serializing content through syntax trees </p> <div class="my-3 d-flex flex-items-center"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-link flex-shrink-0 mr-2"> <path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path> </svg> <span class="flex-auto min-width-0 css-truncate css-truncate-target width-fit"> <a title="https://unifiedjs.com" role="link" target="_blank" rel="noopener noreferrer nofollow" class="text-bold" href="https://unifiedjs.com">unifiedjs.com</a> </span> </div> <h3 class="sr-only">Topics</h3> <div class="my-3"> <div class="f6"> <a href="/topics/javascript" title="Topic: javascript" data-view-component="true" class="topic-tag topic-tag-link"> javascript </a> <a href="/topics/processor" title="Topic: processor" data-view-component="true" class="topic-tag topic-tag-link"> processor </a> <a href="/topics/plugins" title="Topic: plugins" data-view-component="true" class="topic-tag topic-tag-link"> plugins </a> <a href="/topics/ast" title="Topic: ast" data-view-component="true" class="topic-tag topic-tag-link"> ast </a> <a href="/topics/cst" title="Topic: cst" data-view-component="true" class="topic-tag topic-tag-link"> cst </a> <a href="/topics/syntax-tree" title="Topic: syntax-tree" 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1-.154.838l-.53-.53.529.531-.001.002-.002.002-.006.006-.006.005-.01.01-.045.04c-.21.176-.441.327-.686.45C14.556 10.78 13.88 11 13 11a4.498 4.498 0 0 1-2.023-.454 3.544 3.544 0 0 1-.686-.45l-.045-.04-.016-.015-.006-.006-.004-.004v-.001a.75.75 0 0 1-.154-.838L12.178 4.5h-.162c-.305 0-.604-.079-.868-.231l-1.29-.736a.245.245 0 0 0-.124-.033H8.75V13h2.5a.75.75 0 0 1 0 1.5h-6.5a.75.75 0 0 1 0-1.5h2.5V3.5h-.984a.245.245 0 0 0-.124.033l-1.289.737c-.265.15-.564.23-.869.23h-.162l2.112 4.692a.75.75 0 0 1-.154.838l-.53-.53.529.531-.001.002-.002.002-.006.006-.016.015-.045.04c-.21.176-.441.327-.686.45C4.556 10.78 3.88 11 3 11a4.498 4.498 0 0 1-2.023-.454 3.544 3.544 0 0 1-.686-.45l-.045-.04-.016-.015-.006-.006-.004-.004v-.001a.75.75 0 0 1-.154-.838L2.178 4.5H1.75a.75.75 0 0 1 0-1.5h2.234a.249.249 0 0 0 .125-.033l1.288-.737c.265-.15.564-.23.869-.23h.984V.75a.75.75 0 0 1 1.5 0Zm2.945 8.477c.285.135.718.273 1.305.273s1.02-.138 1.305-.273L13 6.327Zm-10 0c.285.135.718.273 1.305.273s1.02-.138 1.305-.273L3 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octicon-note mr-2"> <path d="M0 3.75C0 2.784.784 2 1.75 2h12.5c.966 0 1.75.784 1.75 1.75v8.5A1.75 1.75 0 0 1 14.25 14H1.75A1.75 1.75 0 0 1 0 12.25Zm1.75-.25a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h12.5a.25.25 0 0 0 .25-.25v-8.5a.25.25 0 0 0-.25-.25ZM3.5 6.25a.75.75 0 0 1 .75-.75h7a.75.75 0 0 1 0 1.5h-7a.75.75 0 0 1-.75-.75Zm.75 2.25h4a.75.75 0 0 1 0 1.5h-4a.75.75 0 0 1 0-1.5Z"></path> </svg> <span class="color-fg-muted">Custom properties</span></a> </div> <h3 class="sr-only">Stars</h3> <div class="mt-2"> <a href="/unifiedjs/unified/stargazers" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-star mr-2"> <path d="M8 .25a.75.75 0 0 1 .673.418l1.882 3.815 4.21.612a.75.75 0 0 1 .416 1.279l-3.046 2.97.719 4.192a.751.751 0 0 1-1.088.791L8 12.347l-3.766 1.98a.75.75 0 0 1-1.088-.79l.72-4.194L.818 6.374a.75.75 0 0 1 .416-1.28l4.21-.611L7.327.668A.75.75 0 0 1 8 .25Zm0 2.445L6.615 5.5a.75.75 0 0 1-.564.41l-3.097.45 2.24 2.184a.75.75 0 0 1 .216.664l-.528 3.084 2.769-1.456a.75.75 0 0 1 .698 0l2.77 1.456-.53-3.084a.75.75 0 0 1 .216-.664l2.24-2.183-3.096-.45a.75.75 0 0 1-.564-.41L8 2.694Z"></path> </svg> <strong>4.7k</strong> stars</a> </div> <h3 class="sr-only">Watchers</h3> <div class="mt-2"> <a href="/unifiedjs/unified/watchers" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-eye mr-2"> <path d="M8 2c1.981 0 3.671.992 4.933 2.078 1.27 1.091 2.187 2.345 2.637 3.023a1.62 1.62 0 0 1 0 1.798c-.45.678-1.367 1.932-2.637 3.023C11.67 13.008 9.981 14 8 14c-1.981 0-3.671-.992-4.933-2.078C1.797 10.83.88 9.576.43 8.898a1.62 1.62 0 0 1 0-1.798c.45-.677 1.367-1.931 2.637-3.022C4.33 2.992 6.019 2 8 2ZM1.679 7.932a.12.12 0 0 0 0 .136c.411.622 1.241 1.75 2.366 2.717C5.176 11.758 6.527 12.5 8 12.5c1.473 0 2.825-.742 3.955-1.715 1.124-.967 1.954-2.096 2.366-2.717a.12.12 0 0 0 0-.136c-.412-.621-1.242-1.75-2.366-2.717C10.824 4.242 9.473 3.5 8 3.5c-1.473 0-2.825.742-3.955 1.715-1.124.967-1.954 2.096-2.366 2.717ZM8 10a2 2 0 1 1-.001-3.999A2 2 0 0 1 8 10Z"></path> </svg> <strong>34</strong> watching</a> </div> <h3 class="sr-only">Forks</h3> <div class="mt-2"> <a href="/unifiedjs/unified/forks" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-repo-forked mr-2"> <path d="M5 5.372v.878c0 .414.336.75.75.75h4.5a.75.75 0 0 0 .75-.75v-.878a2.25 2.25 0 1 1 1.5 0v.878a2.25 2.25 0 0 1-2.25 2.25h-1.5v2.128a2.251 2.251 0 1 1-1.5 0V8.5h-1.5A2.25 2.25 0 0 1 3.5 6.25v-.878a2.25 2.25 0 1 1 1.5 0ZM5 3.25a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Zm6.75.75a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5Zm-3 8.75a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Z"></path> </svg> <strong>113</strong> forks</a> </div> <div class="mt-2"> <a class="Link--muted" href="/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2Funifiedjs%2Funified&report=unifiedjs+%28user%29"> Report repository </a> </div> </div> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame"> <a href="/unifiedjs/unified/releases" data-view-component="true" class="Link--primary no-underline Link">Releases <span title="57" data-view-component="true" class="Counter">57</span></a></h2> <a class="Link--primary d-flex no-underline" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/unifiedjs/unified/releases/tag/11.0.5"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-tag flex-shrink-0 mt-1 color-fg-success"> <path d="M1 7.775V2.75C1 1.784 1.784 1 2.75 1h5.025c.464 0 .91.184 1.238.513l6.25 6.25a1.75 1.75 0 0 1 0 2.474l-5.026 5.026a1.75 1.75 0 0 1-2.474 0l-6.25-6.25A1.752 1.752 0 0 1 1 7.775Zm1.5 0c0 .066.026.13.073.177l6.25 6.25a.25.25 0 0 0 .354 0l5.025-5.025a.25.25 0 0 0 0-.354l-6.25-6.25a.25.25 0 0 0-.177-.073H2.75a.25.25 0 0 0-.25.25ZM6 5a1 1 0 1 1 0 2 1 1 0 0 1 0-2Z"></path> </svg> <div class="ml-2 min-width-0"> <div class="d-flex"> <span class="css-truncate css-truncate-target text-bold mr-2" style="max-width: none;">11.0.5</span> <span title="Label: Latest" data-view-component="true" class="Label Label--success flex-shrink-0"> Latest </span> </div> <div class="text-small color-fg-muted"><relative-time datetime="2024-06-19T12:34:02Z" class="no-wrap">Jun 19, 2024</relative-time></div> </div> </a> <div data-view-component="true" class="mt-3"> <a text="small" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/unifiedjs/unified/releases" data-view-component="true" class="Link">+ 56 releases</a></div> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3">Sponsor this project</h2> <include-fragment src="/unifiedjs/unified/sponsors_list?block_button=false&current_repository=unified" aria-busy="true" aria-label="Loading sponsorable links"> <ul class="list-style-none"> <li class="mb-2 d-flex"> <div class="Skeleton avatar avatar-user mr-2" style="width:32px;height:32px;"></div> <div class="Skeleton Skeleton--text flex-1 flex-self-center f4"> </div> </li> </ul> </include-fragment> <ul class="list-style-none"> <li class="mb-2 d-flex"> <span class="mr-2 d-flex flex-items-center flex-justify-center" style="min-width:32px;height:32px;"> <img width="32" height="32" class="octicon rounded-2 d-block" alt="open_collective" src="https://github.githubassets.com/assets/open_collective-0a706523753d.svg" /> </span> <span class="flex-self-center flex-auto min-width-0 css-truncate css-truncate-target width-fit"> <a target="_blank" data-ga-click="Dashboard, click, Nav menu - item:org-profile context:organization" data-hydro-click="{"event_type":"sponsors.repo_funding_links_link_click","payload":{"platform":{"platform_type":"OPEN_COLLECTIVE","platform_url":"https://opencollective.com/unified"},"platforms":[{"platform_type":"GITHUB","platform_url":"https://github.com/unifiedjs"},{"platform_type":"OPEN_COLLECTIVE","platform_url":"https://opencollective.com/unified"},{"platform_type":"THANKS_DEV","platform_url":"https://thanks.dev/u/gh/unifiedjs"}],"repo_id":39996248,"owner_id":21332676,"user_id":null,"originating_url":"https://github.com/unifiedjs/unified"}}" data-hydro-click-hmac="6e6a620a05ac381eab1db55ec729e60b6f2023a707d8af9cfe4598972810c82d" href="https://opencollective.com/unified"><span>opencollective.com/<strong>unified</strong></span></a> </span> </li> <li class="mb-2 d-flex"> <span class="mr-2 d-flex flex-items-center flex-justify-center" style="min-width:32px;height:32px;"> <img width="32" height="32" class="octicon rounded-2 d-block" alt="thanks_dev" src="https://github.githubassets.com/assets/thanks_dev-0fe87803d1ed.svg" /> </span> <span class="flex-self-center flex-auto min-width-0 css-truncate css-truncate-target width-fit"> <a target="_blank" data-ga-click="Dashboard, click, Nav menu - item:org-profile context:organization" data-hydro-click="{"event_type":"sponsors.repo_funding_links_link_click","payload":{"platform":{"platform_type":"THANKS_DEV","platform_url":"https://thanks.dev/u/gh/unifiedjs"},"platforms":[{"platform_type":"GITHUB","platform_url":"https://github.com/unifiedjs"},{"platform_type":"OPEN_COLLECTIVE","platform_url":"https://opencollective.com/unified"},{"platform_type":"THANKS_DEV","platform_url":"https://thanks.dev/u/gh/unifiedjs"}],"repo_id":39996248,"owner_id":21332676,"user_id":null,"originating_url":"https://github.com/unifiedjs/unified"}}" data-hydro-click-hmac="f28c80e3515a1950b1bc4af1d3da203bd08ce18c8c916814b532e6c1603d47e6" href="https://thanks.dev/u/gh/unifiedjs"><span>thanks.dev/<strong>u/gh/unifiedjs</strong></span></a> </span> </li> </ul> <div class="text-small mt-3"> <a href="/sponsors">Learn more about GitHub Sponsors</a> </div> </div> </div> <div class="BorderGrid-row" > <div class="BorderGrid-cell"> <h2 class="h4 mb-3"> <a href="/unifiedjs/unified/network/dependents" data-view-component="true" class="Link--primary no-underline Link">Used by <span title="1,848,585" data-view-component="true" class="Counter">1.8m</span></a> </h2> <a class="d-flex flex-items-center" href="/unifiedjs/unified/network/dependents"> <ul class="hx_flex-avatar-stack list-style-none min-width-0"> <li class="hx_flex-avatar-stack-item"> <img class="avatar avatar-user" src="https://avatars.githubusercontent.com/u/205432249?s=64&v=4" width="32" height="32" alt="@andreyanace" /> </li> <li class="hx_flex-avatar-stack-item"> <img class="avatar avatar-user" src="https://avatars.githubusercontent.com/u/182203549?s=64&v=4" width="32" height="32" alt="@Yuvasri0304" /> </li> <li class="hx_flex-avatar-stack-item"> <img class="avatar" src="https://avatars.githubusercontent.com/u/109679932?s=64&v=4" width="32" height="32" alt="@bluedotimpact" /> </li> <li class="hx_flex-avatar-stack-item"> <img class="avatar avatar-user" src="https://avatars.githubusercontent.com/u/6123557?s=64&v=4" width="32" height="32" alt="@mrailton" /> </li> <li class="hx_flex-avatar-stack-item"> <img class="avatar avatar-user" src="https://avatars.githubusercontent.com/u/63138482?s=64&v=4" width="32" height="32" alt="@1124995754" /> </li> <li class="hx_flex-avatar-stack-item"> <img class="avatar avatar-user" src="https://avatars.githubusercontent.com/u/174923374?s=64&v=4" width="32" height="32" alt="@lifehacr" /> </li> <li class="hx_flex-avatar-stack-item"> <img class="avatar avatar-user" src="https://avatars.githubusercontent.com/u/116044699?s=64&v=4" width="32" height="32" alt="@Garbin18" /> </li> <li class="hx_flex-avatar-stack-item"> <img class="avatar avatar-user" src="https://avatars.githubusercontent.com/u/79632247?s=64&v=4" width="32" height="32" alt="@Aman-Meenia" /> </li> </ul> <span class="px-2 text-bold text-small no-wrap"> + 1,848,577 </span> </a> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3"> <a href="/unifiedjs/unified/graphs/contributors" data-view-component="true" class="Link--primary no-underline Link d-flex flex-items-center">Contributors <span title="22" data-view-component="true" class="Counter ml-1">22</span></a></h2> <ul class="list-style-none d-flex flex-wrap mb-n2"> <li class="mb-2 mr-2" > <a href="https://github.com/wooorm" class="" data-hovercard-type="user" data-hovercard-url="/users/wooorm/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/944406?s=64&v=4" alt="@wooorm" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/ChristianMurphy" class="" data-hovercard-type="user" data-hovercard-url="/users/ChristianMurphy/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/3107513?s=64&v=4" alt="@ChristianMurphy" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/remcohaszing" class="" data-hovercard-type="user" data-hovercard-url="/users/remcohaszing/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/779047?s=64&v=4" alt="@remcohaszing" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/Rokt33r" class="" data-hovercard-type="user" data-hovercard-url="/users/Rokt33r/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/5865853?s=64&v=4" alt="@Rokt33r" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/clavin" class="" data-hovercard-type="user" data-hovercard-url="/users/clavin/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/9995434?s=64&v=4" alt="@clavin" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/greenkeeperio-bot" class="" data-hovercard-type="user" data-hovercard-url="/users/greenkeeperio-bot/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/14790466?s=64&v=4" alt="@greenkeeperio-bot" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/millette" class="" data-hovercard-type="user" data-hovercard-url="/users/millette/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/50741?s=64&v=4" alt="@millette" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/jablko" class="" data-hovercard-type="user" data-hovercard-url="/users/jablko/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/78493?s=64&v=4" alt="@jablko" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/RichardLitt" class="" data-hovercard-type="user" data-hovercard-url="/users/RichardLitt/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/910753?s=64&v=4" alt="@RichardLitt" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/marko-knoebl" class="" data-hovercard-type="user" data-hovercard-url="/users/marko-knoebl/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/1405319?s=64&v=4" alt="@marko-knoebl" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/osdiab" class="" data-hovercard-type="user" data-hovercard-url="/users/osdiab/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/1890926?s=64&v=4" alt="@osdiab" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/hrajchert" class="" data-hovercard-type="user" data-hovercard-url="/users/hrajchert/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/2634059?s=64&v=4" alt="@hrajchert" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/JamesMessinger" class="" data-hovercard-type="user" data-hovercard-url="/users/JamesMessinger/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/3453903?s=64&v=4" alt="@JamesMessinger" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> <li class="mb-2 mr-2" > <a href="https://github.com/diessica" class="" data-hovercard-type="user" data-hovercard-url="/users/diessica/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" > <img src="https://avatars.githubusercontent.com/u/5303585?s=64&v=4" alt="@diessica" size="32" height="32" width="32" data-view-component="true" class="avatar circle" /> </a> </li> </ul> <div data-view-component="true" class="mt-3"> <a text="small" href="/unifiedjs/unified/graphs/contributors" data-view-component="true" class="Link--inTextBlock Link">+ 8 contributors</a></div> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3">Languages</h2> <div class="mb-2"> <span data-view-component="true" class="Progress"> <span style="background-color:#f1e05a !important;;width: 87.2%;" itemprop="keywords" data-view-component="true" class="Progress-item color-bg-success-emphasis"></span> <span style="background-color:#3178c6 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1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z"></path> </svg> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-none m-2"> <path d="M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z"></path> </svg> </clipboard-copy> </div> </template> <template id="snippet-clipboard-copy-button-unpositioned"> <div class="zeroclipboard-container"> <clipboard-copy aria-label="Copy" class="ClipboardButton btn btn-invisible js-clipboard-copy m-2 p-0 d-flex flex-justify-center flex-items-center" data-copy-feedback="Copied!" data-tooltip-direction="w"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy 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