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class="masthead-home-link" href="/global"> <img alt="The Conversation" src="https://cdn.theconversation.com/static/tc/@theconversation/ui/dist/esm/logos/logo-en-b159aca2598f351db37072c75294e4c8.svg" /> </a> <form class="masthead-search" action="/global/search" accept-charset="UTF-8" method="get"> <fieldset> <legend>Search</legend> <div class="row"> <div class="input-wrapper"> <label for="q"><i class="icon-search"></i></label> <input type="text" name="q" id="q" value="" placeholder="Search analysis, research, academics…" /> </div> <button type="submit" class="button" value="Search"></button> </div> </fieldset> </form> <div class="masthead-tagline"> Academic rigour, journalistic flair </div> </header> <nav id="primary-navigation" class=" nocontent"> <ol> </ol> </nav> </div> </section> <div id="outer"> <article id="article" class="clearfix has-desktop-magazine has-mobile-magazine" data-id="214970" itemscope itemtype="http://schema.org/Article"> <figure class="magazine"> <div class="image" style="background-image: url(https://images.theconversation.com/files/554793/original/file-20231019-21-c6blch.jpg?ixlib=rb-4.1.0&rect=7%2C0%2C4785%2C2392&q=45&auto=format&w=1356&h=668&fit=crop);"> <div class="placeholder-container" style="--aspect-ratio-percent:66.5625%;--background-color:#524d30"><img alt="Plants growing out of flower pots placed on a wall" class="lazyloaded" src="https://images.theconversation.com/files/554793/original/file-20231019-21-c6blch.jpg?ixlib=rb-4.1.0&rect=0%2C0%2C4771%2C3183&q=20&auto=format&w=320&fit=clip&dpr=2&usm=12&cs=strip" data-id="554793" itemprop="image"></div> </div> <div class="wrapper"> <figcaption> The Eco Green Wall is an example of a sustainable living wall system. <span class="attribution"><span class="source">Karen Botes</span></span> </figcaption> </div> <div class="magazine-title"> <div class="wrapper"> <header class="content-header-container grid-twelve large-grid-eleven"> <div> <div class="content-header-block"> <h1 class="legacy entry-title instapaper_title" itemprop="headline"> <strong> Growing African vegetables on buildings can save space and feed cities – new study </strong> </h1> </div> </div> <div class="timestamps"> <time datetime="2023-11-05T09:27:02Z" itemprop="datePublished" content="2023-11-05T09:27:02Z">Published: November 5, 2023 9.27am GMT</time> </div> </header> </div> </div> </figure> <div class="wrapper"> <div class="content-sidebar grid-four large-grid-four grid-last"> <section class="content-authors"> <div class="content-authors-synopsis"> <a href="#" class="content-authors-toggle"> <i class="icon-caret-down"></i> <i class="icon-caret-up"></i> <span class="nobr">Karen Botes</span>, <em class="institution_name">University of Pretoria</em> </a> </div> <div class="content-authors-group"> <h3 class="border">Author</h3> <ol> <li class="vcard" id="author-538861" itemprop="author" itemscope="" itemtype="http://schema.org/Person"> <a rel="author" itemprop="url" href="/profiles/karen-botes-1438550"> <img alt="" class="lazyload" data-src="https://cdn.theconversation.com/avatars/1438550/width170/file-20230511-11888-mu2hpj.jpg" src="https://cdn.theconversation.com/static/tc/author/width170_default-bea415b3a0223821a698f6e3f6d5ab99.jpg" itemprop="image"> <span class="fn author-name" itemprop="name"> Karen Botes </span> </a> <p class="role"> Lecturer in Landscape Architecture, University of Pretoria </p> </li> </ol> </div> </section> <section class="content-disclosure-statement"> <h3 class="border">Disclosure statement</h3> <p><span>Karen Botes does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.</span></p> </section> <section class="content-partners"> <h3 class="border">Partners</h3> <p class="disclosure-logo clearfix"><a class="logo" href="/institutions/university-of-pretoria-1645"><picture><source 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data-url="https://theconversation.com/growing-african-vegetables-on-buildings-can-save-space-and-feed-cities-new-study-214970" data-id="214970" target="_blank" rel="noopener" href="http://www.linkedin.com/shareArticle?mini=true&source=The+Conversation&summary=_As+cities+grow%2C+more+people+%5Bneed%5D%28https%3A%2F%2Fglobalaffairs.org%2Fsites%2Fdefault%2Ffiles%2F2021-02%2Freport_growing-food-for-growing-cities.pdf%23page%3D13%29+food.+However%2C+space+for+farming+is+%5Blimited%5D%28https%3A%2F%2Fw...&title=Growing+African+vegetables+on+buildings+can+save+space+and+feed+cities+%E2%80%93+new+study&url=https%3A%2F%2Ftheconversation.com%2Fgrowing-african-vegetables-on-buildings-can-save-space-and-feed-cities-new-study-214970%3Futm_source%3Dlinkedin%26utm_medium%3Dbylinelinkedinbutton"><i class="icon-linkedin"></i> <span>LinkedIn</span></a> </div> <div class="whatsapp"> <a class="whatsapp-button" data-href="https://theconversation.com/growing-african-vegetables-on-buildings-can-save-space-and-feed-cities-new-study-214970" data-action="share/whatsapp/share" data-id="214970" target="_blank" rel="noopener" href="whatsapp://send?text=Growing+African+vegetables+on+buildings+can+save+space+and+feed+cities+%E2%80%93+new+study+https%3A%2F%2Ftheconversation.com%2Fgrowing-african-vegetables-on-buildings-can-save-space-and-feed-cities-new-study-214970%3Futm_source%3Dwhatsapp%26utm_medium%3Dbylinewhatsappbutton"><i class="icon-whatsapp"></i> <span>WhatsApp</span></a> </div> <div class="fb-messenger"> <a class="fb-messenger-button" data-href="https://theconversation.com/growing-african-vegetables-on-buildings-can-save-space-and-feed-cities-new-study-214970" data-action="share/fb-messenger/share" data-id="214970" target="_blank" rel="noopener" href="fb-messenger://share?link=https%3A%2F%2Ftheconversation.com%2Fgrowing-african-vegetables-on-buildings-can-save-space-and-feed-cities-new-study-214970%3Futm_source%3Dfb_messenger%26utm_medium%3Dbylinefb_messenger_button"><i class="icon-fb-messenger"></i> <span>Messenger</span></a> </div> </aside> </div> <div class="grid-ten large-grid-nine grid-last content-body content entry-content instapaper_body inline-promos" itemprop="articleBody"> <p><em>As cities grow, more people <a href="https://globalaffairs.org/sites/default/files/2021-02/report_growing-food-for-growing-cities.pdf#page=13">need</a> food. However, space for farming is <a href="https://www.focusingfuture.com/eco-city/urban-farming-solves-lack-of-agriculture-space/">limited</a> in cities. Building facades can offer a solution for growing food. We asked landscape architect Karen Botes to tell us about her research – cultivating traditional African vegetables on walls.</em> </p> <h2>What are ‘living wall systems’ and why did you study them?</h2> <p><a href="https://www.ajlajournal.org/articles/traditional-african-vegetables-living-walls">Living wall systems</a> are vertical growing platforms which usually form part of a building façade. Some are <a href="https://www.sciencedirect.com/science/article/pii/S1364032114006637">continuous, others modular</a>.</p> <p><a href="https://journals.ufs.ac.za/index.php/as/article/view/5801/4204#page=147">Continuous systems</a> are lightweight screens with pockets that can contain wet <a href="https://www.sciencedirect.com/science/article/pii/S0360132316305108">felted substrate layers</a>, or rock wool, for the plants to grow in, or the plants’ exposed roots are kept wet with nutrient-rich fluids. An example of a continuous system is <a href="https://www.nal.usda.gov/farms-and-agricultural-production-systems/hydroponics#:%7E:text=Hydroponics%20is%20the%20technique%20of,%2C%20coconut%20coir%2C%20or%20perlite.">hydroponics</a>.</p> <p><a href="https://journals.ufs.ac.za/index.php/as/article/view/5801/4204">Modular living wall systems</a> are irrigated plant trays or pots containing soil and fixed onto a supporting structure on the building’s vertical surface. Modular systems are widely used because they make an immediate aesthetic impact. The plants are pre-grown offsite and individual plants are easily replaced. </p><div class="slot clear" data-id="17"> <div class="inline-promos-skeleton"> <h5></h5> <button></button> </div> </div> <p>To learn more about which modular living wall systems work best, I compared two during the 2021/2022 growing season in Pretoria, South Africa. My <a href="https://www.ajlajournal.org/articles/traditional-african-vegetables-living-walls#:%7E:text=Living%20wall%20food%20systems%20involving,social%2Cenvironmental%20and%20educational%20benefits.">six-month study</a> also compared traditional African vegetable crops with a mainstream crop. </p> <h2>What are the benefits of living walls?</h2> <p>Benefits of living walls include <a href="https://iopscience.iop.org/article/10.1088/1755-1315/1101/2/022051">food production</a>, <a href="https://repository.up.ac.za/handle/2263/61145">biodiversity, cooling, air purification and noise reduction</a>. They also have aesthetic value and are known to <a href="https://www.sciencedirect.com/science/article/pii/S1618866719302894?casa_token=y4OCy-Fm0QYAAAAA:4Hw1JE3WdPN-jq2yt_7N_hN2-eYsWPvqLe99lWUuDpW2SkKxS0do0OjFmI5a8_qi3MckNMAN">reduce stress and improve productivity and wellbeing</a>. </p> <p>When households grow edible crops in living walls, it reduces the environmental impact of food because it doesn’t have to come from far away. And it reduces waste. Growing vegetables has also been found to encourage urban gardeners to eat a more balanced diet in <a href="https://journals.openedition.org/factsreports/5610">Honduras</a>, <a href="https://www.jstage.jst.go.jp/article/jrm/13/2/13_2960/_article/-char/ja/">Japan</a>, <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/hpja.207?casa_token=RbOlOoyUaUoAAAAA%3AkFEtqYg4Q4KR5MfSlWne6LfeJZZjLb4VKiaU6TIv69QABUjGd7m55KQz-12bDaa1HxgxJpMX2NBuSYo">Australia and elsewhere</a>.</p> <p>I’m interested in whether <a href="https://iopscience.iop.org/article/10.1088/1755-1315/1101/2/022051">living walls with traditional African vegetables</a> could improve local household food production and contribute to dealing with climate change, <a href="https://theconversation.com/the-loss-of-vegetation-is-creating-a-dangerous-heat-island-over-nairobi-150622">urban heat islands</a> and urban <a href="https://theconversation.com/how-buildings-in-johannesburg-could-benefit-from-green-roofs-122877">microclimates</a>.</p> <h2>What did you discover in your study in Pretoria?</h2> <p>The study compared the performance of traditional African vegetable crops in two types of living wall system, the Vicinity wall and the Eco Green Wall, in terms of crop yields and health. </p> <p>The <a href="https://www.modularverticalgarden.com/">Vicinity</a> wall is an all-in-one system, with water tanks at the bottom, a pump and a filter. The top row of pots is drip irrigated and the water gravitates into each row, before circulating back to the top row. The Vicinity pots are clipped onto an aluminium rail fixed to the building. </p> <p>The <a href="https://journals.ufs.ac.za/index.php/as/article/view/5801/4204">Eco Green Wall</a> comprises interlocking, lightweight blocks made out of recycled polystyrene aggregate-and-cement mixture, and plant pots with a soil volume of roughly 1.5 litres. It is designed with economic feasibility and sustainability in mind. </p> <p>I compared the living wall systems’ performance to traditional soil-based agriculture. Variables included minimum and maximum daily temperatures, relative humidity, precipitation, soil temperature, water content and electrical conductivity, leaf biomass yield and plant stress. </p> <p>The <a href="https://iopscience.iop.org/articlesystem's%20components/10.1088/1755-1315/1101/2/022051">study</a> found that local production of the living wall components reduced their cost and carbon footprint. </p> <p><a href="https://www.ajlajournal.org/articles/traditional-african-vegetables-living-walls#:%7E:text=Living%20wall%20food%20systems%20involving,social%2Cenvironmental%20and%20educational%20benefits.">Low technology</a> that requires basic assembly, and a basic irrigation system to limit dependency on electricity and water, can enhance performance.</p> <figure class="align-right zoomable"> <a href="https://images.theconversation.com/files/555142/original/file-20231022-29-ow433r.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><div class="placeholder-container" style="--aspect-ratio-percent:75.10548523206751%;--background-color:#4e4a34"><img alt="" class="lazyload" data-src="https://images.theconversation.com/files/555142/original/file-20231022-29-ow433r.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=237&fit=clip" data-srcset="https://images.theconversation.com/files/555142/original/file-20231022-29-ow433r.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=450&fit=crop&dpr=1 600w, https://images.theconversation.com/files/555142/original/file-20231022-29-ow433r.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=450&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/555142/original/file-20231022-29-ow433r.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=450&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/555142/original/file-20231022-29-ow433r.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=566&fit=crop&dpr=1 754w, https://images.theconversation.com/files/555142/original/file-20231022-29-ow433r.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=566&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/555142/original/file-20231022-29-ow433r.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=566&fit=crop&dpr=3 2262w" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px"></div></a> <figcaption> <span class="caption">The Vicinity living wall system.</span> <span class="attribution"><span class="source">Karen Botes</span></span> </figcaption> </figure> <p>An <a href="https://iopscience.iop.org/article/10.1088/1755-1315/1101/2/022051/meta">appropriate plant selection</a> can further improve the living wall’s resilience, feasibility and sustainability. The study identified seven <a href="https://link.springer.com/article/10.1007/s12231-019-09448-1">traditional African vegetable</a> species suitable for household food production in living wall systems: creeping foxglove, Indian borage, jute plant, pink ribbons, water mint, dwarf elephant’s food and black-eyed pea. </p> <h2>How feasible is it? What are the biggest barriers?</h2> <p><a href="https://link.springer.com/article/10.1007/s11252-008-0063-x">Building facades</a> make up roughly double the area of building footprints in urban areas. This means that walls have more potential for local food production than traditional soil-based urban agriculture. They also have environmental benefits. </p> <p>But the efficiency, resilience and sustainability of current living wall systems have been <a href="https://iopscience.iop.org/article/10.1088/1755-1315/1101/2/022051">questioned</a> globally and need improvement. </p> <ul> <li><p>They are costly to install and maintain. </p></li> <li><p>They seldom provide optimal conditions for plants to flourish. </p></li> <li><p>They rely on electricity and water.</p></li> <li><p>Some systems require specialised skills and technology.</p></li> </ul> <h2>What could make it work for cities on the continent?</h2> <p>Sun exposure of plant pots should be limited so that the soil doesn’t get too hot. The <a href="https://journals.ufs.ac.za/index.php/as/article/view/5801/4204">Eco Green Wall</a> system is an example where sun exposure is limited and the structure protects the crops.</p> <p>Pots need to have at least three litres of <a href="https://www.publish.csiro.au/fp/FP12028">soil</a> with a depth of 200mm. This increases yield and reduces plant stress. The soil must be lightweight and meet the plant’s requirements. Aeration, texture and drainage must be right. The pots’ drainage holes must limit blockages. </p> <p>A drip or wick irrigation system for each plant level reduces maintenance and increases resilience.</p> <p>Selecting <a href="https://www.ajlajournal.org/articles/traditional-african-vegetables-living-walls#:%7E:text=Living%20wall%20food%20systems%20involving,social%2Cenvironmental%20and%20educational%20benefits.">traditional African vegetables</a> increases the feasibility and resilience of crop performance. These crops can tolerate sub-Saharan Africa’s harsh climate conditions. </p> <p><a href="https://iopscience.iop.org/article/10.1088/1755-1315/1101/2/022051">Traditional African vegetables</a> also have a high nutritional value, don’t need much irrigation or chemicals, and are resistant to disease. </p> <p>These vegetables prefer full sun and no frost. Well-drained, aerated potting soil that allows for movement of air, water and nutrients works well for them. They require moderate irrigation.</p> <p>The system should be positioned to avoid possible contamination of crops by <a href="https://iopscience.iop.org/article/10.1088/1755-1315/1101/2/022051">polluted environments</a>. It must be orientated to provide <a href="https://www.sciencedirect.com/science/article/abs/pii/S1618866717304156">efficient sun exposure</a> for the selected plants.</p> <h2>So, are living wall systems worth considering to grow vegetables?</h2> <p>I concluded from my research that growing traditional African vegetables in modular living walls saves space compared to standard soil-based food production on a household scale. Considering the horizontal footprint area occupied in terms of yield per square metre, living wall systems with larger pot volumes produced over four times the yield of conventional soil-based agriculture. And they use space that would otherwise not have been used productively.</p> <p>I also concluded that <a href="https://www.ajlajournal.org/articles/traditional-african-vegetables-living-walls#:%7E:text=Living%20wall%20food%20systems%20involving,social%2Cenvironmental%20and%20educational%20benefits.">outdoor modular living wall systems with selected traditional African vegetable crops</a> might be one way of improving food security and urban environments in sub-Saharan Africa.</p> </div> <div class="grid-ten grid-prepend-two large-grid-nine grid-last content-topics topic-list"> <i class="icon-tag"></i> <ul> <li class="topic-list-item"> <a href="/topics/climate-change-27">Climate change</a> </li> <li class="topic-list-item"> <a href="/topics/soil-273">Soil</a> </li> <li class="topic-list-item"> <a href="/topics/irrigation-1821">Irrigation</a> </li> <li class="topic-list-item"> <a href="/topics/south-africa-5995">South Africa</a> </li> <li class="topic-list-item"> <a 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0!==arguments[3]?arguments[3]:{};return this.i18nFormat?.getResource?this.i18nFormat.getResource(e,t,s,i):this.resourceStore.getResource(e,t,s,i)}getUsedParamsDetails(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};const t=["defaultValue","ordinal","context","replace","lng","lngs","fallbackLng","ns","keySeparator","nsSeparator","returnObjects","returnDetails","joinArrays","postProcess","interpolation"],s=e.replace&&!i(e.replace);let n=s?e.replace:e;if(s&&void 0!==e.count&&(n.count=e.count),this.options.interpolation.defaultVariables&&(n={...this.options.interpolation.defaultVariables,...n}),!s){n={...n};for(const e of t)delete n[e]}return n}static hasDefaultValue(e){const t="defaultValue";for(const s in e)if(Object.prototype.hasOwnProperty.call(e,s)&&t===s.substring(0,12)&&void 0!==e[s])return!0;return!1}}class j{constructor(e){this.options=e,this.supportedLngs=this.options.supportedLngs||!1,this.logger=S.create("languageUtils")}getScriptPartFromCode(e){if(!(e=b(e))||e.indexOf("-")<0)return null;const t=e.split("-");return 2===t.length?null:(t.pop(),"x"===t[t.length-1].toLowerCase()?null:this.formatLanguageCode(t.join("-")))}getLanguagePartFromCode(e){if(!(e=b(e))||e.indexOf("-")<0)return e;const t=e.split("-");return this.formatLanguageCode(t[0])}formatLanguageCode(e){if(i(e)&&e.indexOf("-")>-1){let t=Intl.getCanonicalLocales(e)[0];return t&&this.options.lowerCaseLng&&(t=t.toLowerCase()),t||(this.options.lowerCaseLng?e.toLowerCase():e)}return this.options.cleanCode||this.options.lowerCaseLng?e.toLowerCase():e}isSupportedCode(e){return("languageOnly"===this.options.load||this.options.nonExplicitSupportedLngs)&&(e=this.getLanguagePartFromCode(e)),!this.supportedLngs||!this.supportedLngs.length||this.supportedLngs.indexOf(e)>-1}getBestMatchFromCodes(e){if(!e)return null;let t;return e.forEach((e=>{if(t)return;const s=this.formatLanguageCode(e);this.options.supportedLngs&&!this.isSupportedCode(s)||(t=s)})),!t&&this.options.supportedLngs&&e.forEach((e=>{if(t)return;const s=this.getLanguagePartFromCode(e);if(this.isSupportedCode(s))return t=s;t=this.options.supportedLngs.find((e=>e===s?e:e.indexOf("-")<0&&s.indexOf("-")<0?void 0:e.indexOf("-")>0&&s.indexOf("-")<0&&e.substring(0,e.indexOf("-"))===s||0===e.indexOf(s)&&s.length>1?e:void 0))})),t||(t=this.getFallbackCodes(this.options.fallbackLng)[0]),t}getFallbackCodes(e,t){if(!e)return[];if("function"==typeof e&&(e=e(t)),i(e)&&(e=[e]),Array.isArray(e))return e;if(!t)return e.default||[];let s=e[t];return s||(s=e[this.getScriptPartFromCode(t)]),s||(s=e[this.formatLanguageCode(t)]),s||(s=e[this.getLanguagePartFromCode(t)]),s||(s=e.default),s||[]}toResolveHierarchy(e,t){const s=this.getFallbackCodes(t||this.options.fallbackLng||[],e),n=[],o=e=>{e&&(this.isSupportedCode(e)?n.push(e):this.logger.warn(`rejecting language code not found in supportedLngs: ${e}`))};return i(e)&&(e.indexOf("-")>-1||e.indexOf("_")>-1)?("languageOnly"!==this.options.load&&o(this.formatLanguageCode(e)),"languageOnly"!==this.options.load&&"currentOnly"!==this.options.load&&o(this.getScriptPartFromCode(e)),"currentOnly"!==this.options.load&&o(this.getLanguagePartFromCode(e))):i(e)&&o(this.formatLanguageCode(e)),s.forEach((e=>{n.indexOf(e)<0&&o(this.formatLanguageCode(e))})),n}}const $={zero:0,one:1,two:2,few:3,many:4,other:5},C={select:e=>1===e?"one":"other",resolvedOptions:()=>({pluralCategories:["one","other"]})};class N{constructor(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};this.languageUtils=e,this.options=t,this.logger=S.create("pluralResolver"),this.pluralRulesCache={}}addRule(e,t){this.rules[e]=t}clearCache(){this.pluralRulesCache={}}getRule(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const s=b("dev"===e?"en":e),i=t.ordinal?"ordinal":"cardinal",n=JSON.stringify({cleanedCode:s,type:i});if(n in this.pluralRulesCache)return this.pluralRulesCache[n];let o;try{o=new Intl.PluralRules(s,{type:i})}catch(s){if(!Intl)return this.logger.error("No Intl support, please use an Intl polyfill!"),C;if(!e.match(/-|_/))return C;const i=this.languageUtils.getLanguagePartFromCode(e);o=this.getRule(i,t)}return this.pluralRulesCache[n]=o,o}needsPlural(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},s=this.getRule(e,t);return s||(s=this.getRule("dev",t)),s?.resolvedOptions().pluralCategories.length>1}getPluralFormsOfKey(e,t){let s=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};return this.getSuffixes(e,s).map((e=>`${t}${e}`))}getSuffixes(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},s=this.getRule(e,t);return s||(s=this.getRule("dev",t)),s?s.resolvedOptions().pluralCategories.sort(((e,t)=>$[e]-$[t])).map((e=>`${this.options.prepend}${t.ordinal?`ordinal${this.options.prepend}`:""}${e}`)):[]}getSuffix(e,t){let s=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};const i=this.getRule(e,s);return i?`${this.options.prepend}${s.ordinal?`ordinal${this.options.prepend}`:""}${i.select(t)}`:(this.logger.warn(`no plural rule found for: ${e}`),this.getSuffix("dev",t,s))}}const E=function(e,t,s){let n=arguments.length>3&&void 0!==arguments[3]?arguments[3]:".",o=!(arguments.length>4&&void 0!==arguments[4])||arguments[4],r=((e,t,s)=>{const i=h(e,s);return void 0!==i?i:h(t,s)})(e,t,s);return!r&&o&&i(s)&&(r=y(e,s,n),void 0===r&&(r=y(t,s,n))),r},A=e=>e.replace(/\$/g,"$$$$");class T{constructor(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};this.logger=S.create("interpolator"),this.options=e,this.format=e?.interpolation?.format||(e=>e),this.init(e)}init(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};e.interpolation||(e.interpolation={escapeValue:!0});const{escape:t,escapeValue:s,useRawValueToEscape:i,prefix:n,prefixEscaped:o,suffix:r,suffixEscaped:a,formatSeparator:l,unescapeSuffix:c,unescapePrefix:u,nestingPrefix:h,nestingPrefixEscaped:p,nestingSuffix:g,nestingSuffixEscaped:v,nestingOptionsSeparator:m,maxReplaces:y,alwaysFormat:b}=e.interpolation;this.escape=void 0!==t?t:f,this.escapeValue=void 0===s||s,this.useRawValueToEscape=void 0!==i&&i,this.prefix=n?d(n):o||"{{",this.suffix=r?d(r):a||"}}",this.formatSeparator=l||",",this.unescapePrefix=c?"":u||"-",this.unescapeSuffix=this.unescapePrefix?"":c||"",this.nestingPrefix=h?d(h):p||d("$t("),this.nestingSuffix=g?d(g):v||d(")"),this.nestingOptionsSeparator=m||",",this.maxReplaces=y||1e3,this.alwaysFormat=void 0!==b&&b,this.resetRegExp()}reset(){this.options&&this.init(this.options)}resetRegExp(){const e=(e,t)=>e?.source===t?(e.lastIndex=0,e):new RegExp(t,"g");this.regexp=e(this.regexp,`${this.prefix}(.+?)${this.suffix}`),this.regexpUnescape=e(this.regexpUnescape,`${this.prefix}${this.unescapePrefix}(.+?)${this.unescapeSuffix}${this.suffix}`),this.nestingRegexp=e(this.nestingRegexp,`${this.nestingPrefix}(.+?)${this.nestingSuffix}`)}interpolate(e,t,s,n){let r,a,l;const c=this.options&&this.options.interpolation&&this.options.interpolation.defaultVariables||{},u=e=>{if(e.indexOf(this.formatSeparator)<0){const i=E(t,c,e,this.options.keySeparator,this.options.ignoreJSONStructure);return this.alwaysFormat?this.format(i,void 0,s,{...n,...t,interpolationkey:e}):i}const i=e.split(this.formatSeparator),o=i.shift().trim(),r=i.join(this.formatSeparator).trim();return this.format(E(t,c,o,this.options.keySeparator,this.options.ignoreJSONStructure),r,s,{...n,...t,interpolationkey:o})};this.resetRegExp();const h=n?.missingInterpolationHandler||this.options.missingInterpolationHandler,p=void 0!==n?.interpolation?.skipOnVariables?n.interpolation.skipOnVariables:this.options.interpolation.skipOnVariables;return[{regex:this.regexpUnescape,safeValue:e=>A(e)},{regex:this.regexp,safeValue:e=>this.escapeValue?A(this.escape(e)):A(e)}].forEach((t=>{for(l=0;r=t.regex.exec(e);){const s=r[1].trim();if(a=u(s),void 0===a)if("function"==typeof h){const t=h(e,r,n);a=i(t)?t:""}else if(n&&Object.prototype.hasOwnProperty.call(n,s))a="";else{if(p){a=r[0];continue}this.logger.warn(`missed to pass in variable ${s} for interpolating ${e}`),a=""}else i(a)||this.useRawValueToEscape||(a=o(a));const c=t.safeValue(a);if(e=e.replace(r[0],c),p?(t.regex.lastIndex+=a.length,t.regex.lastIndex-=r[0].length):t.regex.lastIndex=0,l++,l>=this.maxReplaces)break}})),e}nest(e,t){let s,n,r,a=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};const l=(e,t)=>{const s=this.nestingOptionsSeparator;if(e.indexOf(s)<0)return e;const i=e.split(new RegExp(`${s}[ ]*{`));let n=`{${i[1]}`;e=i[0],n=this.interpolate(n,r);const o=n.match(/'/g),a=n.match(/"/g);((o?.length??0)%2==0&&!a||a.length%2!=0)&&(n=n.replace(/'/g,'"'));try{r=JSON.parse(n),t&&(r={...t,...r})}catch(t){return this.logger.warn(`failed parsing options string in nesting for key ${e}`,t),`${e}${s}${n}`}return r.defaultValue&&r.defaultValue.indexOf(this.prefix)>-1&&delete r.defaultValue,e};for(;s=this.nestingRegexp.exec(e);){let c=[];r={...a},r=r.replace&&!i(r.replace)?r.replace:r,r.applyPostProcessor=!1,delete r.defaultValue;let u=!1;if(-1!==s[0].indexOf(this.formatSeparator)&&!/{.*}/.test(s[1])){const e=s[1].split(this.formatSeparator).map((e=>e.trim()));s[1]=e.shift(),c=e,u=!0}if(n=t(l.call(this,s[1].trim(),r),r),n&&s[0]===e&&!i(n))return n;i(n)||(n=o(n)),n||(this.logger.warn(`missed to resolve ${s[1]} for nesting ${e}`),n=""),u&&(n=c.reduce(((e,t)=>this.format(e,t,a.lng,{...a,interpolationkey:s[1].trim()})),n.trim())),e=e.replace(s[0],n),this.regexp.lastIndex=0}return e}}const D=e=>{const t={};return(s,i,n)=>{let o=n;n&&n.interpolationkey&&n.formatParams&&n.formatParams[n.interpolationkey]&&n[n.interpolationkey]&&(o={...o,[n.interpolationkey]:void 0});const r=i+JSON.stringify(o);let a=t[r];return a||(a=e(b(i),n),t[r]=a),a(s)}};class I{constructor(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};this.logger=S.create("formatter"),this.options=e,this.formats={number:D(((e,t)=>{const s=new Intl.NumberFormat(e,{...t});return e=>s.format(e)})),currency:D(((e,t)=>{const s=new Intl.NumberFormat(e,{...t,style:"currency"});return e=>s.format(e)})),datetime:D(((e,t)=>{const s=new Intl.DateTimeFormat(e,{...t});return e=>s.format(e)})),relativetime:D(((e,t)=>{const s=new Intl.RelativeTimeFormat(e,{...t});return e=>s.format(e,t.range||"day")})),list:D(((e,t)=>{const s=new Intl.ListFormat(e,{...t});return e=>s.format(e)}))},this.init(e)}init(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{interpolation:{}};this.formatSeparator=t.interpolation.formatSeparator||","}add(e,t){this.formats[e.toLowerCase().trim()]=t}addCached(e,t){this.formats[e.toLowerCase().trim()]=D(t)}format(e,t,s){let i=arguments.length>3&&void 0!==arguments[3]?arguments[3]:{};const n=t.split(this.formatSeparator);if(n.length>1&&n[0].indexOf("(")>1&&n[0].indexOf(")")<0&&n.find((e=>e.indexOf(")")>-1))){const e=n.findIndex((e=>e.indexOf(")")>-1));n[0]=[n[0],...n.splice(1,e)].join(this.formatSeparator)}return n.reduce(((e,t)=>{const{formatName:n,formatOptions:o}=(e=>{let t=e.toLowerCase().trim();const s={};if(e.indexOf("(")>-1){const i=e.split("(");t=i[0].toLowerCase().trim();const n=i[1].substring(0,i[1].length-1);"currency"===t&&n.indexOf(":")<0?s.currency||(s.currency=n.trim()):"relativetime"===t&&n.indexOf(":")<0?s.range||(s.range=n.trim()):n.split(";").forEach((e=>{if(e){const[t,...i]=e.split(":"),n=i.join(":").trim().replace(/^'+|'+$/g,""),o=t.trim();s[o]||(s[o]=n),"false"===n&&(s[o]=!1),"true"===n&&(s[o]=!0),isNaN(n)||(s[o]=parseInt(n,10))}}))}return{formatName:t,formatOptions:s}})(t);if(this.formats[n]){let t=e;try{const r=i?.formatParams?.[i.interpolationkey]||{},a=r.locale||r.lng||i.locale||i.lng||s;t=this.formats[n](e,a,{...o,...i,...r})}catch(e){this.logger.warn(e)}return t}return this.logger.warn(`there was no format function for ${n}`),e}),e)}}class V extends O{constructor(e,t,s){let i=arguments.length>3&&void 0!==arguments[3]?arguments[3]:{};super(),this.backend=e,this.store=t,this.services=s,this.languageUtils=s.languageUtils,this.options=i,this.logger=S.create("backendConnector"),this.waitingReads=[],this.maxParallelReads=i.maxParallelReads||10,this.readingCalls=0,this.maxRetries=i.maxRetries>=0?i.maxRetries:5,this.retryTimeout=i.retryTimeout>=1?i.retryTimeout:350,this.state={},this.queue=[],this.backend?.init?.(s,i.backend,i)}queueLoad(e,t,s,i){const n={},o={},r={},a={};return e.forEach((e=>{let i=!0;t.forEach((t=>{const r=`${e}|${t}`;!s.reload&&this.store.hasResourceBundle(e,t)?this.state[r]=2:this.state[r]<0||(1===this.state[r]?void 0===o[r]&&(o[r]=!0):(this.state[r]=1,i=!1,void 0===o[r]&&(o[r]=!0),void 0===n[r]&&(n[r]=!0),void 0===a[t]&&(a[t]=!0)))})),i||(r[e]=!0)})),(Object.keys(n).length||Object.keys(o).length)&&this.queue.push({pending:o,pendingCount:Object.keys(o).length,loaded:{},errors:[],callback:i}),{toLoad:Object.keys(n),pending:Object.keys(o),toLoadLanguages:Object.keys(r),toLoadNamespaces:Object.keys(a)}}loaded(e,t,s){const i=e.split("|"),n=i[0],o=i[1];t&&this.emit("failedLoading",n,o,t),!t&&s&&this.store.addResourceBundle(n,o,s,void 0,void 0,{skipCopy:!0}),this.state[e]=t?-1:2,t&&s&&(this.state[e]=0);const r={};this.queue.forEach((s=>{((e,t,s,i)=>{const{obj:n,k:o}=c(e,t,Object);n[o]=n[o]||[],n[o].push(s)})(s.loaded,[n],o),((e,t)=>{void 0!==e.pending[t]&&(delete e.pending[t],e.pendingCount--)})(s,e),t&&s.errors.push(t),0!==s.pendingCount||s.done||(Object.keys(s.loaded).forEach((e=>{r[e]||(r[e]={});const t=s.loaded[e];t.length&&t.forEach((t=>{void 0===r[e][t]&&(r[e][t]=!0)}))})),s.done=!0,s.errors.length?s.callback(s.errors):s.callback())})),this.emit("loaded",r),this.queue=this.queue.filter((e=>!e.done))}read(e,t,s){let i=arguments.length>3&&void 0!==arguments[3]?arguments[3]:0,n=arguments.length>4&&void 0!==arguments[4]?arguments[4]:this.retryTimeout,o=arguments.length>5?arguments[5]:void 0;if(!e.length)return o(null,{});if(this.readingCalls>=this.maxParallelReads)return void this.waitingReads.push({lng:e,ns:t,fcName:s,tried:i,wait:n,callback:o});this.readingCalls++;const r=(r,a)=>{if(this.readingCalls--,this.waitingReads.length>0){const e=this.waitingReads.shift();this.read(e.lng,e.ns,e.fcName,e.tried,e.wait,e.callback)}r&&a&&i<this.maxRetries?setTimeout((()=>{this.read.call(this,e,t,s,i+1,2*n,o)}),n):o(r,a)},a=this.backend[s].bind(this.backend);if(2!==a.length)return a(e,t,r);try{const s=a(e,t);s&&"function"==typeof s.then?s.then((e=>r(null,e))).catch(r):r(null,s)}catch(e){r(e)}}prepareLoading(e,t){let s=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},n=arguments.length>3?arguments[3]:void 0;if(!this.backend)return this.logger.warn("No backend was added via i18next.use. Will not load resources."),n&&n();i(e)&&(e=this.languageUtils.toResolveHierarchy(e)),i(t)&&(t=[t]);const o=this.queueLoad(e,t,s,n);if(!o.toLoad.length)return o.pending.length||n(),null;o.toLoad.forEach((e=>{this.loadOne(e)}))}load(e,t,s){this.prepareLoading(e,t,{},s)}reload(e,t,s){this.prepareLoading(e,t,{reload:!0},s)}loadOne(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"";const s=e.split("|"),i=s[0],n=s[1];this.read(i,n,"read",void 0,void 0,((s,o)=>{s&&this.logger.warn(`${t}loading namespace ${n} for language ${i} failed`,s),!s&&o&&this.logger.log(`${t}loaded namespace ${n} for language ${i}`,o),this.loaded(e,s,o)}))}saveMissing(e,t,s,i,n){let o=arguments.length>5&&void 0!==arguments[5]?arguments[5]:{},r=arguments.length>6&&void 0!==arguments[6]?arguments[6]:()=>{};if(!this.services?.utils?.hasLoadedNamespace||this.services?.utils?.hasLoadedNamespace(t)){if(null!=s&&""!==s){if(this.backend?.create){const a={...o,isUpdate:n},l=this.backend.create.bind(this.backend);if(l.length<6)try{let n;n=5===l.length?l(e,t,s,i,a):l(e,t,s,i),n&&"function"==typeof n.then?n.then((e=>r(null,e))).catch(r):r(null,n)}catch(e){r(e)}else l(e,t,s,i,r,a)}e&&e[0]&&this.store.addResource(e[0],t,s,i)}}else this.logger.warn(`did not save key "${s}" as the namespace "${t}" was not yet loaded`,"This means something IS WRONG in your setup. You access the t function before i18next.init / i18next.loadNamespace / i18next.changeLanguage was done. Wait for the callback or Promise to resolve before accessing it!!!")}}const F=()=>({debug:!1,initAsync:!0,ns:["translation"],defaultNS:["translation"],fallbackLng:["dev"],fallbackNS:!1,supportedLngs:!1,nonExplicitSupportedLngs:!1,load:"all",preload:!1,simplifyPluralSuffix:!0,keySeparator:".",nsSeparator:":",pluralSeparator:"_",contextSeparator:"_",partialBundledLanguages:!1,saveMissing:!1,updateMissing:!1,saveMissingTo:"fallback",saveMissingPlurals:!0,missingKeyHandler:!1,missingInterpolationHandler:!1,postProcess:!1,postProcessPassResolved:!1,returnNull:!1,returnEmptyString:!0,returnObjects:!1,joinArrays:!1,returnedObjectHandler:!1,parseMissingKeyHandler:!1,appendNamespaceToMissingKey:!1,appendNamespaceToCIMode:!1,overloadTranslationOptionHandler:e=>{let t={};if("object"==typeof e[1]&&(t=e[1]),i(e[1])&&(t.defaultValue=e[1]),i(e[2])&&(t.tDescription=e[2]),"object"==typeof e[2]||"object"==typeof e[3]){const s=e[3]||e[2];Object.keys(s).forEach((e=>{t[e]=s[e]}))}return t},interpolation:{escapeValue:!0,format:e=>e,prefix:"{{",suffix:"}}",formatSeparator:",",unescapePrefix:"-",nestingPrefix:"$t(",nestingSuffix:")",nestingOptionsSeparator:",",maxReplaces:1e3,skipOnVariables:!0}}),M=e=>(i(e.ns)&&(e.ns=[e.ns]),i(e.fallbackLng)&&(e.fallbackLng=[e.fallbackLng]),i(e.fallbackNS)&&(e.fallbackNS=[e.fallbackNS]),e.supportedLngs?.indexOf?.("cimode")<0&&(e.supportedLngs=e.supportedLngs.concat(["cimode"])),"boolean"==typeof e.initImmediate&&(e.initAsync=e.initImmediate),e),U=()=>{};class H extends O{constructor(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},t=arguments.length>1?arguments[1]:void 0;var s;if(super(),this.options=M(e),this.services={},this.logger=S,this.modules={external:[]},s=this,Object.getOwnPropertyNames(Object.getPrototypeOf(s)).forEach((e=>{"function"==typeof s[e]&&(s[e]=s[e].bind(s))})),t&&!this.isInitialized&&!e.isClone){if(!this.options.initAsync)return this.init(e,t),this;setTimeout((()=>{this.init(e,t)}),0)}}init(){var e=this;let t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},s=arguments.length>1?arguments[1]:void 0;this.isInitializing=!0,"function"==typeof t&&(s=t,t={}),!t.defaultNS&&!1!==t.defaultNS&&t.ns&&(i(t.ns)?t.defaultNS=t.ns:t.ns.indexOf("translation")<0&&(t.defaultNS=t.ns[0]));const o=F();this.options={...o,...this.options,...M(t)},this.options.interpolation={...o.interpolation,...this.options.interpolation},void 0!==t.keySeparator&&(this.options.userDefinedKeySeparator=t.keySeparator),void 0!==t.nsSeparator&&(this.options.userDefinedNsSeparator=t.nsSeparator);const r=e=>e?"function"==typeof e?new e:e:null;if(!this.options.isClone){let t;this.modules.logger?S.init(r(this.modules.logger),this.options):S.init(null,this.options),t=this.modules.formatter?this.modules.formatter:I;const s=new j(this.options);this.store=new w(this.options.resources,this.options);const i=this.services;i.logger=S,i.resourceStore=this.store,i.languageUtils=s,i.pluralResolver=new N(s,{prepend:this.options.pluralSeparator,simplifyPluralSuffix:this.options.simplifyPluralSuffix}),!t||this.options.interpolation.format&&this.options.interpolation.format!==o.interpolation.format||(i.formatter=r(t),i.formatter.init(i,this.options),this.options.interpolation.format=i.formatter.format.bind(i.formatter)),i.interpolator=new T(this.options),i.utils={hasLoadedNamespace:this.hasLoadedNamespace.bind(this)},i.backendConnector=new V(r(this.modules.backend),i.resourceStore,i,this.options),i.backendConnector.on("*",(function(t){for(var s=arguments.length,i=new Array(s>1?s-1:0),n=1;n<s;n++)i[n-1]=arguments[n];e.emit(t,...i)})),this.modules.languageDetector&&(i.languageDetector=r(this.modules.languageDetector),i.languageDetector.init&&i.languageDetector.init(i,this.options.detection,this.options)),this.modules.i18nFormat&&(i.i18nFormat=r(this.modules.i18nFormat),i.i18nFormat.init&&i.i18nFormat.init(this)),this.translator=new P(this.services,this.options),this.translator.on("*",(function(t){for(var s=arguments.length,i=new Array(s>1?s-1:0),n=1;n<s;n++)i[n-1]=arguments[n];e.emit(t,...i)})),this.modules.external.forEach((e=>{e.init&&e.init(this)}))}if(this.format=this.options.interpolation.format,s||(s=U),this.options.fallbackLng&&!this.services.languageDetector&&!this.options.lng){const e=this.services.languageUtils.getFallbackCodes(this.options.fallbackLng);e.length>0&&"dev"!==e[0]&&(this.options.lng=e[0])}this.services.languageDetector||this.options.lng||this.logger.warn("init: no languageDetector is used and no lng is defined");["getResource","hasResourceBundle","getResourceBundle","getDataByLanguage"].forEach((t=>{this[t]=function(){return e.store[t](...arguments)}}));["addResource","addResources","addResourceBundle","removeResourceBundle"].forEach((t=>{this[t]=function(){return e.store[t](...arguments),e}}));const a=n(),l=()=>{const e=(e,t)=>{this.isInitializing=!1,this.isInitialized&&!this.initializedStoreOnce&&this.logger.warn("init: i18next is already initialized. You should call init just once!"),this.isInitialized=!0,this.options.isClone||this.logger.log("initialized",this.options),this.emit("initialized",this.options),a.resolve(t),s(e,t)};if(this.languages&&!this.isInitialized)return e(null,this.t.bind(this));this.changeLanguage(this.options.lng,e)};return this.options.resources||!this.options.initAsync?l():setTimeout(l,0),a}loadResources(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:U;const s=i(e)?e:this.language;if("function"==typeof e&&(t=e),!this.options.resources||this.options.partialBundledLanguages){if("cimode"===s?.toLowerCase()&&(!this.options.preload||0===this.options.preload.length))return t();const e=[],i=t=>{if(!t)return;if("cimode"===t)return;this.services.languageUtils.toResolveHierarchy(t).forEach((t=>{"cimode"!==t&&e.indexOf(t)<0&&e.push(t)}))};if(s)i(s);else{this.services.languageUtils.getFallbackCodes(this.options.fallbackLng).forEach((e=>i(e)))}this.options.preload?.forEach?.((e=>i(e))),this.services.backendConnector.load(e,this.options.ns,(e=>{e||this.resolvedLanguage||!this.language||this.setResolvedLanguage(this.language),t(e)}))}else t(null)}reloadResources(e,t,s){const i=n();return"function"==typeof e&&(s=e,e=void 0),"function"==typeof t&&(s=t,t=void 0),e||(e=this.languages),t||(t=this.options.ns),s||(s=U),this.services.backendConnector.reload(e,t,(e=>{i.resolve(),s(e)})),i}use(e){if(!e)throw new Error("You are passing an undefined module! 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0,this.setResolvedLanguage(e)},a=(e,i)=>{i?(r(i),this.translator.changeLanguage(i),this.isLanguageChangingTo=void 0,this.emit("languageChanged",i),this.logger.log("languageChanged",i)):this.isLanguageChangingTo=void 0,o.resolve((function(){return s.t(...arguments)})),t&&t(e,(function(){return s.t(...arguments)}))},l=t=>{e||t||!this.services.languageDetector||(t=[]);const s=i(t)?t:this.services.languageUtils.getBestMatchFromCodes(t);s&&(this.language||r(s),this.translator.language||this.translator.changeLanguage(s),this.services.languageDetector?.cacheUserLanguage?.(s)),this.loadResources(s,(e=>{a(e,s)}))};return e||!this.services.languageDetector||this.services.languageDetector.async?!e&&this.services.languageDetector&&this.services.languageDetector.async?0===this.services.languageDetector.detect.length?this.services.languageDetector.detect().then(l):this.services.languageDetector.detect(l):l(e):l(this.services.languageDetector.detect()),o}getFixedT(e,t,s){var n=this;const o=function(e,t){let i;if("object"!=typeof t){for(var r=arguments.length,a=new Array(r>2?r-2:0),l=2;l<r;l++)a[l-2]=arguments[l];i=n.options.overloadTranslationOptionHandler([e,t].concat(a))}else i={...t};i.lng=i.lng||o.lng,i.lngs=i.lngs||o.lngs,i.ns=i.ns||o.ns,""!==i.keyPrefix&&(i.keyPrefix=i.keyPrefix||s||o.keyPrefix);const c=n.options.keySeparator||".";let u;return u=i.keyPrefix&&Array.isArray(e)?e.map((e=>`${i.keyPrefix}${c}${e}`)):i.keyPrefix?`${i.keyPrefix}${c}${e}`:e,n.t(u,i)};return i(e)?o.lng=e:o.lngs=e,o.ns=t,o.keyPrefix=s,o}t(){for(var e=arguments.length,t=new Array(e),s=0;s<e;s++)t[s]=arguments[s];return this.translator?.translate(...t)}exists(){for(var e=arguments.length,t=new Array(e),s=0;s<e;s++)t[s]=arguments[s];return this.translator?.exists(...t)}setDefaultNamespace(e){this.options.defaultNS=e}hasLoadedNamespace(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(!this.isInitialized)return this.logger.warn("hasLoadedNamespace: i18next was not initialized",this.languages),!1;if(!this.languages||!this.languages.length)return this.logger.warn("hasLoadedNamespace: i18n.languages were undefined or empty",this.languages),!1;const s=t.lng||this.resolvedLanguage||this.languages[0],i=!!this.options&&this.options.fallbackLng,n=this.languages[this.languages.length-1];if("cimode"===s.toLowerCase())return!0;const o=(e,t)=>{const s=this.services.backendConnector.state[`${e}|${t}`];return-1===s||0===s||2===s};if(t.precheck){const e=t.precheck(this,o);if(void 0!==e)return e}return!!this.hasResourceBundle(s,e)||(!(this.services.backendConnector.backend&&(!this.options.resources||this.options.partialBundledLanguages))||!(!o(s,e)||i&&!o(n,e)))}loadNamespaces(e,t){const s=n();return this.options.ns?(i(e)&&(e=[e]),e.forEach((e=>{this.options.ns.indexOf(e)<0&&this.options.ns.push(e)})),this.loadResources((e=>{s.resolve(),t&&t(e)})),s):(t&&t(),Promise.resolve())}loadLanguages(e,t){const s=n();i(e)&&(e=[e]);const o=this.options.preload||[],r=e.filter((e=>o.indexOf(e)<0&&this.services.languageUtils.isSupportedCode(e)));return r.length?(this.options.preload=o.concat(r),this.loadResources((e=>{s.resolve(),t&&t(e)})),s):(t&&t(),Promise.resolve())}dir(e){if(e||(e=this.resolvedLanguage||(this.languages?.length>0?this.languages[0]:this.language)),!e)return"rtl";const t=this.services?.languageUtils||new j(F());return["ar","shu","sqr","ssh","xaa","yhd","yud","aao","abh","abv","acm","acq","acw","acx","acy","adf","ads","aeb","aec","afb","ajp","apc","apd","arb","arq","ars","ary","arz","auz","avl","ayh","ayl","ayn","ayp","bbz","pga","he","iw","ps","pbt","pbu","pst","prp","prd","ug","ur","ydd","yds","yih","ji","yi","hbo","men","xmn","fa","jpr","peo","pes","prs","dv","sam","ckb"].indexOf(t.getLanguagePartFromCode(e))>-1||e.toLowerCase().indexOf("-arab")>1?"rtl":"ltr"}static createInstance(){return new H(arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},arguments.length>1?arguments[1]:void 0)}cloneInstance(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:U;const s=e.forkResourceStore;s&&delete e.forkResourceStore;const i={...this.options,...e,isClone:!0},n=new H(i);void 0===e.debug&&void 0===e.prefix||(n.logger=n.logger.clone(e));return["store","services","language"].forEach((e=>{n[e]=this[e]})),n.services={...this.services},n.services.utils={hasLoadedNamespace:n.hasLoadedNamespace.bind(n)},s&&(n.store=new w(this.store.data,i),n.services.resourceStore=n.store),n.translator=new P(n.services,i),n.translator.on("*",(function(e){for(var t=arguments.length,s=new Array(t>1?t-1:0),i=1;i<t;i++)s[i-1]=arguments[i];n.emit(e,...s)})),n.init(i,t),n.translator.options=i,n.translator.backendConnector.services.utils={hasLoadedNamespace:n.hasLoadedNamespace.bind(n)},n}toJSON(){return{options:this.options,store:this.store,language:this.language,languages:this.languages,resolvedLanguage:this.resolvedLanguage}}}const K=H.createInstance();K.createInstance=H.createInstance;K.createInstance,K.dir,K.init,K.loadResources,K.reloadResources,K.use,K.changeLanguage,K.getFixedT,K.t,K.exists,K.setDefaultNamespace,K.hasLoadedNamespace,K.loadNamespaces,K.loadLanguages}},function(e){var t;t=51250,e(e.s=t)}]); //# sourceMappingURL=i18n_init-115e8b97572e00d91d6f.js.map //]]> </script> <script src="https://cdn.theconversation.com/static/tc/runtime-8563a1641acaeb567def.js"></script> <script type="text/javascript" data-vendor="c:smartocto-GJ7CA7CP"> var _ain = { access_level: "free", article_type: "analysis", authors: "University of Pretoria", id: "2743", maincontent: ".content-body", postid: "214970", pubdate: "2023-11-05T09:27:02Z", reader_type: "anonymous", sections: "africa>Environment + Energy", tags: "Climate change, Soil, Irrigation, South Africa, Pretoria, RandD, Urban centres, Building facades, Traditional African Vegetables", title: "Growing African vegetables on buildings can save space and feed cities – 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