From 9d1c7e21b631aa5f43ea9aef7c6eda4cd61f5a54 Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Mon, 6 Nov 2023 10:59:12 +0100
Subject: [PATCH] md plugin api works even if deck isn't available #3517

---
 plugin/markdown/markdown.esm.js | 2 +-
 plugin/markdown/markdown.js     | 2 +-
 plugin/markdown/plugin.js       | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/plugin/markdown/markdown.esm.js b/plugin/markdown/markdown.esm.js
index e59cbcff69d..cb5ea80a581 100644
--- a/plugin/markdown/markdown.esm.js
+++ b/plugin/markdown/markdown.esm.js
@@ -4,4 +4,4 @@ function e(){return{async:!1,baseUrl:null,breaks:!1,extensions:null,gfm:!0,heade
  * markdown inside of presentations as well as loading
  * of external markdown documents.
  */
-const N="__SCRIPT_END__",O=/\[\s*((\d*):)?\s*([\s\d,|-]*)\]/,D={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"},B=()=>{let e;function t(e){let t=(e.querySelector("[data-template]")||e.querySelector("script")||e).textContent;t=t.replace(new RegExp(N,"g"),"<\/script>");const n=t.match(/^\n?(\s*)/)[1].length,s=t.match(/^\n?(\t*)/)[1].length;return s>0?t=t.replace(new RegExp("\\n?\\t{"+s+"}(.*)","g"),(function(e,t){return"\n"+t})):n>1&&(t=t.replace(new RegExp("\\n? {"+n+"}(.*)","g"),(function(e,t){return"\n"+t}))),t}function n(e){const t=e.attributes,n=[];for(let e=0,s=t.length;e<s;e++){const s=t[e].name,r=t[e].value;/data\-(markdown|separator|vertical|notes)/gi.test(s)||(r?n.push(s+'="'+r+'"'):n.push(s))}return n.join(" ")}function s(t){const n=e.getConfig().markdown;return(t=t||{}).separator=t.separator||n?.separator||"\r?\n---\r?\n",t.verticalSeparator=t.verticalSeparator||n?.verticalSeparator||null,t.notesSeparator=t.notesSeparator||n?.notesSeparator||"^s*notes?:",t.attributes=t.attributes||"",t}function r(e,t){t=s(t);const n=e.split(new RegExp(t.notesSeparator,"mgi"));return 2===n.length&&(e=n[0]+'<aside class="notes">'+M(n[1].trim())+"</aside>"),'<script type="text/template">'+(e=e.replace(/<\/script>/g,N))+"<\/script>"}function i(e,t){t=s(t);const n=new RegExp(t.separator+(t.verticalSeparator?"|"+t.verticalSeparator:""),"mg"),i=new RegExp(t.separator);let l,o,a,c=0,h=!0,p=[];for(;l=n.exec(e);)o=i.test(l[0]),!o&&h&&p.push([]),a=e.substring(c,l.index),o&&h?p.push(a):p[p.length-1].push(a),c=n.lastIndex,h=o;(h?p:p[p.length-1]).push(e.substring(c));let u="";for(let e=0,n=p.length;e<n;e++)p[e]instanceof Array?(u+="<section "+t.attributes+">",p[e].forEach((function(e){u+="<section data-markdown>"+r(e,t)+"</section>"})),u+="</section>"):u+="<section "+t.attributes+" data-markdown>"+r(p[e],t)+"</section>";return u}function l(e){return new Promise((function(s){const r=[];[].slice.call(e.querySelectorAll("section[data-markdown]:not([data-markdown-parsed])")).forEach((function(e,s){e.getAttribute("data-markdown").length?r.push(function(e){return new Promise((function(t,n){const s=new XMLHttpRequest,r=e.getAttribute("data-markdown"),i=e.getAttribute("data-charset");null!==i&&""!==i&&s.overrideMimeType("text/html; charset="+i),s.onreadystatechange=function(e,s){4===s.readyState&&(s.status>=200&&s.status<300||0===s.status?t(s,r):n(s,r))}.bind(this,e,s),s.open("GET",r,!0);try{s.send()}catch(e){console.warn("Failed to get the Markdown file "+r+". Make sure that the presentation and the file are served by a HTTP server and the file can be found there. "+e),t(s,r)}}))}(e).then((function(t,s){e.outerHTML=i(t.responseText,{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})}),(function(t,n){e.outerHTML='<section data-state="alert">ERROR: The attempt to fetch '+n+" failed with HTTP status "+t.status+".Check your browser's JavaScript console for more details.<p>Remember that you need to serve the presentation HTML from a HTTP server.</p></section>"}))):e.outerHTML=i(t(e),{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})})),Promise.all(r).then(s)}))}function o(e,t,n){const s=new RegExp(n,"mg"),r=new RegExp('([^"= ]+?)="([^"]+?)"|(data-[^"= ]+?)(?=[" ])',"mg");let i,l,o=e.nodeValue;if(i=s.exec(o)){const n=i[1];for(o=o.substring(0,i.index)+o.substring(s.lastIndex),e.nodeValue=o;l=r.exec(n);)l[2]?t.setAttribute(l[1],l[2]):t.setAttribute(l[3],"");return!0}return!1}function a(e,t,n,s,r){if(null!==t&&void 0!==t.childNodes&&t.childNodes.length>0){let n=t;for(let i=0;i<t.childNodes.length;i++){const l=t.childNodes[i];if(i>0){let e=i-1;for(;e>=0;){const s=t.childNodes[e];if("function"==typeof s.setAttribute&&"BR"!==s.tagName){n=s;break}e-=1}}let o=e;"section"===l.nodeName&&(o=l,n=l),"function"!=typeof l.setAttribute&&l.nodeType!==Node.COMMENT_NODE||a(o,l,n,s,r)}}t.nodeType===Node.COMMENT_NODE&&!1===o(t,n,s)&&o(t,e,r)}function c(){const n=e.getRevealElement().querySelectorAll("[data-markdown]:not([data-markdown-parsed])");return[].slice.call(n).forEach((function(e){e.setAttribute("data-markdown-parsed",!0);const n=e.querySelector("aside.notes"),s=t(e);e.innerHTML=M(s),a(e,e,null,e.getAttribute("data-element-attributes")||e.parentNode.getAttribute("data-element-attributes")||"\\.element\\s*?(.+?)$",e.getAttribute("data-attributes")||e.parentNode.getAttribute("data-attributes")||"\\.slide:\\s*?(\\S.+?)$"),n&&e.appendChild(n)})),Promise.resolve()}return{id:"markdown",init:function(t){e=t;let{renderer:n,animateLists:s,...r}=e.getConfig().markdown||{};return n||(n=new M.Renderer,n.code=(e,t)=>{let n="",s="";if(O.test(t)){let e=t.match(O)[2];e&&(n=`data-ln-start-from="${e.trim()}"`),s=t.match(O)[3].trim(),s=`data-line-numbers="${s}"`,t=t.replace(O,"").trim()}return`<pre><code ${s} ${n} class="${t}">${e=e.replace(/([&<>'"])/g,(e=>D[e]))}</code></pre>`}),!0===s&&(n.listitem=e=>`<li class="fragment">${e}</li>`),M.setOptions({renderer:n,...r}),l(e.getRevealElement()).then(c)},processSlides:l,convertSlides:c,slidify:i,marked:M}};export{B as default};
+const N="__SCRIPT_END__",O=/\[\s*((\d*):)?\s*([\s\d,|-]*)\]/,D={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"},B=()=>{let e;function t(e){let t=(e.querySelector("[data-template]")||e.querySelector("script")||e).textContent;t=t.replace(new RegExp(N,"g"),"<\/script>");const n=t.match(/^\n?(\s*)/)[1].length,s=t.match(/^\n?(\t*)/)[1].length;return s>0?t=t.replace(new RegExp("\\n?\\t{"+s+"}(.*)","g"),(function(e,t){return"\n"+t})):n>1&&(t=t.replace(new RegExp("\\n? {"+n+"}(.*)","g"),(function(e,t){return"\n"+t}))),t}function n(e){const t=e.attributes,n=[];for(let e=0,s=t.length;e<s;e++){const s=t[e].name,r=t[e].value;/data\-(markdown|separator|vertical|notes)/gi.test(s)||(r?n.push(s+'="'+r+'"'):n.push(s))}return n.join(" ")}function s(t){const n=e.getConfig?.().markdown;return(t=t||{}).separator=t.separator||n?.separator||"\r?\n---\r?\n",t.verticalSeparator=t.verticalSeparator||n?.verticalSeparator||null,t.notesSeparator=t.notesSeparator||n?.notesSeparator||"^s*notes?:",t.attributes=t.attributes||"",t}function r(e,t){t=s(t);const n=e.split(new RegExp(t.notesSeparator,"mgi"));return 2===n.length&&(e=n[0]+'<aside class="notes">'+M(n[1].trim())+"</aside>"),'<script type="text/template">'+(e=e.replace(/<\/script>/g,N))+"<\/script>"}function i(e,t){t=s(t);const n=new RegExp(t.separator+(t.verticalSeparator?"|"+t.verticalSeparator:""),"mg"),i=new RegExp(t.separator);let l,o,a,c=0,h=!0,p=[];for(;l=n.exec(e);)o=i.test(l[0]),!o&&h&&p.push([]),a=e.substring(c,l.index),o&&h?p.push(a):p[p.length-1].push(a),c=n.lastIndex,h=o;(h?p:p[p.length-1]).push(e.substring(c));let u="";for(let e=0,n=p.length;e<n;e++)p[e]instanceof Array?(u+="<section "+t.attributes+">",p[e].forEach((function(e){u+="<section data-markdown>"+r(e,t)+"</section>"})),u+="</section>"):u+="<section "+t.attributes+" data-markdown>"+r(p[e],t)+"</section>";return u}function l(e){return new Promise((function(s){const r=[];[].slice.call(e.querySelectorAll("section[data-markdown]:not([data-markdown-parsed])")).forEach((function(e,s){e.getAttribute("data-markdown").length?r.push(function(e){return new Promise((function(t,n){const s=new XMLHttpRequest,r=e.getAttribute("data-markdown"),i=e.getAttribute("data-charset");null!==i&&""!==i&&s.overrideMimeType("text/html; charset="+i),s.onreadystatechange=function(e,s){4===s.readyState&&(s.status>=200&&s.status<300||0===s.status?t(s,r):n(s,r))}.bind(this,e,s),s.open("GET",r,!0);try{s.send()}catch(e){console.warn("Failed to get the Markdown file "+r+". Make sure that the presentation and the file are served by a HTTP server and the file can be found there. "+e),t(s,r)}}))}(e).then((function(t,s){e.outerHTML=i(t.responseText,{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})}),(function(t,n){e.outerHTML='<section data-state="alert">ERROR: The attempt to fetch '+n+" failed with HTTP status "+t.status+".Check your browser's JavaScript console for more details.<p>Remember that you need to serve the presentation HTML from a HTTP server.</p></section>"}))):e.outerHTML=i(t(e),{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})})),Promise.all(r).then(s)}))}function o(e,t,n){const s=new RegExp(n,"mg"),r=new RegExp('([^"= ]+?)="([^"]+?)"|(data-[^"= ]+?)(?=[" ])',"mg");let i,l,o=e.nodeValue;if(i=s.exec(o)){const n=i[1];for(o=o.substring(0,i.index)+o.substring(s.lastIndex),e.nodeValue=o;l=r.exec(n);)l[2]?t.setAttribute(l[1],l[2]):t.setAttribute(l[3],"");return!0}return!1}function a(e,t,n,s,r){if(null!==t&&void 0!==t.childNodes&&t.childNodes.length>0){let n=t;for(let i=0;i<t.childNodes.length;i++){const l=t.childNodes[i];if(i>0){let e=i-1;for(;e>=0;){const s=t.childNodes[e];if("function"==typeof s.setAttribute&&"BR"!==s.tagName){n=s;break}e-=1}}let o=e;"section"===l.nodeName&&(o=l,n=l),"function"!=typeof l.setAttribute&&l.nodeType!==Node.COMMENT_NODE||a(o,l,n,s,r)}}t.nodeType===Node.COMMENT_NODE&&!1===o(t,n,s)&&o(t,e,r)}function c(){const n=e.getRevealElement().querySelectorAll("[data-markdown]:not([data-markdown-parsed])");return[].slice.call(n).forEach((function(e){e.setAttribute("data-markdown-parsed",!0);const n=e.querySelector("aside.notes"),s=t(e);e.innerHTML=M(s),a(e,e,null,e.getAttribute("data-element-attributes")||e.parentNode.getAttribute("data-element-attributes")||"\\.element\\s*?(.+?)$",e.getAttribute("data-attributes")||e.parentNode.getAttribute("data-attributes")||"\\.slide:\\s*?(\\S.+?)$"),n&&e.appendChild(n)})),Promise.resolve()}return{id:"markdown",init:function(t){e=t;let{renderer:n,animateLists:s,...r}=e.getConfig().markdown||{};return n||(n=new M.Renderer,n.code=(e,t)=>{let n="",s="";if(O.test(t)){let e=t.match(O)[2];e&&(n=`data-ln-start-from="${e.trim()}"`),s=t.match(O)[3].trim(),s=`data-line-numbers="${s}"`,t=t.replace(O,"").trim()}return`<pre><code ${s} ${n} class="${t}">${e=e.replace(/([&<>'"])/g,(e=>D[e]))}</code></pre>`}),!0===s&&(n.listitem=e=>`<li class="fragment">${e}</li>`),M.setOptions({renderer:n,...r}),l(e.getRevealElement()).then(c)},processSlides:l,convertSlides:c,slidify:i,marked:M}};export{B as default};
diff --git a/plugin/markdown/markdown.js b/plugin/markdown/markdown.js
index f022d05edf5..bf6c05fdfc2 100644
--- a/plugin/markdown/markdown.js
+++ b/plugin/markdown/markdown.js
@@ -4,4 +4,4 @@
    * markdown inside of presentations as well as loading
    * of external markdown documents.
    */
-const N="__SCRIPT_END__",O=/\[\s*((\d*):)?\s*([\s\d,|-]*)\]/,D={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"};return()=>{let e;function t(e){let t=(e.querySelector("[data-template]")||e.querySelector("script")||e).textContent;t=t.replace(new RegExp(N,"g"),"<\/script>");const n=t.match(/^\n?(\s*)/)[1].length,s=t.match(/^\n?(\t*)/)[1].length;return s>0?t=t.replace(new RegExp("\\n?\\t{"+s+"}(.*)","g"),(function(e,t){return"\n"+t})):n>1&&(t=t.replace(new RegExp("\\n? {"+n+"}(.*)","g"),(function(e,t){return"\n"+t}))),t}function n(e){const t=e.attributes,n=[];for(let e=0,s=t.length;e<s;e++){const s=t[e].name,r=t[e].value;/data\-(markdown|separator|vertical|notes)/gi.test(s)||(r?n.push(s+'="'+r+'"'):n.push(s))}return n.join(" ")}function s(t){const n=e.getConfig().markdown;return(t=t||{}).separator=t.separator||n?.separator||"\r?\n---\r?\n",t.verticalSeparator=t.verticalSeparator||n?.verticalSeparator||null,t.notesSeparator=t.notesSeparator||n?.notesSeparator||"^s*notes?:",t.attributes=t.attributes||"",t}function r(e,t){t=s(t);const n=e.split(new RegExp(t.notesSeparator,"mgi"));return 2===n.length&&(e=n[0]+'<aside class="notes">'+P(n[1].trim())+"</aside>"),'<script type="text/template">'+(e=e.replace(/<\/script>/g,N))+"<\/script>"}function i(e,t){t=s(t);const n=new RegExp(t.separator+(t.verticalSeparator?"|"+t.verticalSeparator:""),"mg"),i=new RegExp(t.separator);let l,o,a,c=0,h=!0,p=[];for(;l=n.exec(e);)o=i.test(l[0]),!o&&h&&p.push([]),a=e.substring(c,l.index),o&&h?p.push(a):p[p.length-1].push(a),c=n.lastIndex,h=o;(h?p:p[p.length-1]).push(e.substring(c));let u="";for(let e=0,n=p.length;e<n;e++)p[e]instanceof Array?(u+="<section "+t.attributes+">",p[e].forEach((function(e){u+="<section data-markdown>"+r(e,t)+"</section>"})),u+="</section>"):u+="<section "+t.attributes+" data-markdown>"+r(p[e],t)+"</section>";return u}function l(e){return new Promise((function(s){const r=[];[].slice.call(e.querySelectorAll("section[data-markdown]:not([data-markdown-parsed])")).forEach((function(e,s){e.getAttribute("data-markdown").length?r.push(function(e){return new Promise((function(t,n){const s=new XMLHttpRequest,r=e.getAttribute("data-markdown"),i=e.getAttribute("data-charset");null!==i&&""!==i&&s.overrideMimeType("text/html; charset="+i),s.onreadystatechange=function(e,s){4===s.readyState&&(s.status>=200&&s.status<300||0===s.status?t(s,r):n(s,r))}.bind(this,e,s),s.open("GET",r,!0);try{s.send()}catch(e){console.warn("Failed to get the Markdown file "+r+". Make sure that the presentation and the file are served by a HTTP server and the file can be found there. "+e),t(s,r)}}))}(e).then((function(t,s){e.outerHTML=i(t.responseText,{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})}),(function(t,n){e.outerHTML='<section data-state="alert">ERROR: The attempt to fetch '+n+" failed with HTTP status "+t.status+".Check your browser's JavaScript console for more details.<p>Remember that you need to serve the presentation HTML from a HTTP server.</p></section>"}))):e.outerHTML=i(t(e),{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})})),Promise.all(r).then(s)}))}function o(e,t,n){const s=new RegExp(n,"mg"),r=new RegExp('([^"= ]+?)="([^"]+?)"|(data-[^"= ]+?)(?=[" ])',"mg");let i,l,o=e.nodeValue;if(i=s.exec(o)){const n=i[1];for(o=o.substring(0,i.index)+o.substring(s.lastIndex),e.nodeValue=o;l=r.exec(n);)l[2]?t.setAttribute(l[1],l[2]):t.setAttribute(l[3],"");return!0}return!1}function a(e,t,n,s,r){if(null!==t&&void 0!==t.childNodes&&t.childNodes.length>0){let n=t;for(let i=0;i<t.childNodes.length;i++){const l=t.childNodes[i];if(i>0){let e=i-1;for(;e>=0;){const s=t.childNodes[e];if("function"==typeof s.setAttribute&&"BR"!==s.tagName){n=s;break}e-=1}}let o=e;"section"===l.nodeName&&(o=l,n=l),"function"!=typeof l.setAttribute&&l.nodeType!==Node.COMMENT_NODE||a(o,l,n,s,r)}}t.nodeType===Node.COMMENT_NODE&&!1===o(t,n,s)&&o(t,e,r)}function c(){const n=e.getRevealElement().querySelectorAll("[data-markdown]:not([data-markdown-parsed])");return[].slice.call(n).forEach((function(e){e.setAttribute("data-markdown-parsed",!0);const n=e.querySelector("aside.notes"),s=t(e);e.innerHTML=P(s),a(e,e,null,e.getAttribute("data-element-attributes")||e.parentNode.getAttribute("data-element-attributes")||"\\.element\\s*?(.+?)$",e.getAttribute("data-attributes")||e.parentNode.getAttribute("data-attributes")||"\\.slide:\\s*?(\\S.+?)$"),n&&e.appendChild(n)})),Promise.resolve()}return{id:"markdown",init:function(t){e=t;let{renderer:n,animateLists:s,...r}=e.getConfig().markdown||{};return n||(n=new P.Renderer,n.code=(e,t)=>{let n="",s="";if(O.test(t)){let e=t.match(O)[2];e&&(n=`data-ln-start-from="${e.trim()}"`),s=t.match(O)[3].trim(),s=`data-line-numbers="${s}"`,t=t.replace(O,"").trim()}return`<pre><code ${s} ${n} class="${t}">${e=e.replace(/([&<>'"])/g,(e=>D[e]))}</code></pre>`}),!0===s&&(n.listitem=e=>`<li class="fragment">${e}</li>`),P.setOptions({renderer:n,...r}),l(e.getRevealElement()).then(c)},processSlides:l,convertSlides:c,slidify:i,marked:P}}}));
+const N="__SCRIPT_END__",O=/\[\s*((\d*):)?\s*([\s\d,|-]*)\]/,D={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"};return()=>{let e;function t(e){let t=(e.querySelector("[data-template]")||e.querySelector("script")||e).textContent;t=t.replace(new RegExp(N,"g"),"<\/script>");const n=t.match(/^\n?(\s*)/)[1].length,s=t.match(/^\n?(\t*)/)[1].length;return s>0?t=t.replace(new RegExp("\\n?\\t{"+s+"}(.*)","g"),(function(e,t){return"\n"+t})):n>1&&(t=t.replace(new RegExp("\\n? {"+n+"}(.*)","g"),(function(e,t){return"\n"+t}))),t}function n(e){const t=e.attributes,n=[];for(let e=0,s=t.length;e<s;e++){const s=t[e].name,r=t[e].value;/data\-(markdown|separator|vertical|notes)/gi.test(s)||(r?n.push(s+'="'+r+'"'):n.push(s))}return n.join(" ")}function s(t){const n=e.getConfig?.().markdown;return(t=t||{}).separator=t.separator||n?.separator||"\r?\n---\r?\n",t.verticalSeparator=t.verticalSeparator||n?.verticalSeparator||null,t.notesSeparator=t.notesSeparator||n?.notesSeparator||"^s*notes?:",t.attributes=t.attributes||"",t}function r(e,t){t=s(t);const n=e.split(new RegExp(t.notesSeparator,"mgi"));return 2===n.length&&(e=n[0]+'<aside class="notes">'+P(n[1].trim())+"</aside>"),'<script type="text/template">'+(e=e.replace(/<\/script>/g,N))+"<\/script>"}function i(e,t){t=s(t);const n=new RegExp(t.separator+(t.verticalSeparator?"|"+t.verticalSeparator:""),"mg"),i=new RegExp(t.separator);let l,o,a,c=0,h=!0,p=[];for(;l=n.exec(e);)o=i.test(l[0]),!o&&h&&p.push([]),a=e.substring(c,l.index),o&&h?p.push(a):p[p.length-1].push(a),c=n.lastIndex,h=o;(h?p:p[p.length-1]).push(e.substring(c));let u="";for(let e=0,n=p.length;e<n;e++)p[e]instanceof Array?(u+="<section "+t.attributes+">",p[e].forEach((function(e){u+="<section data-markdown>"+r(e,t)+"</section>"})),u+="</section>"):u+="<section "+t.attributes+" data-markdown>"+r(p[e],t)+"</section>";return u}function l(e){return new Promise((function(s){const r=[];[].slice.call(e.querySelectorAll("section[data-markdown]:not([data-markdown-parsed])")).forEach((function(e,s){e.getAttribute("data-markdown").length?r.push(function(e){return new Promise((function(t,n){const s=new XMLHttpRequest,r=e.getAttribute("data-markdown"),i=e.getAttribute("data-charset");null!==i&&""!==i&&s.overrideMimeType("text/html; charset="+i),s.onreadystatechange=function(e,s){4===s.readyState&&(s.status>=200&&s.status<300||0===s.status?t(s,r):n(s,r))}.bind(this,e,s),s.open("GET",r,!0);try{s.send()}catch(e){console.warn("Failed to get the Markdown file "+r+". Make sure that the presentation and the file are served by a HTTP server and the file can be found there. "+e),t(s,r)}}))}(e).then((function(t,s){e.outerHTML=i(t.responseText,{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})}),(function(t,n){e.outerHTML='<section data-state="alert">ERROR: The attempt to fetch '+n+" failed with HTTP status "+t.status+".Check your browser's JavaScript console for more details.<p>Remember that you need to serve the presentation HTML from a HTTP server.</p></section>"}))):e.outerHTML=i(t(e),{separator:e.getAttribute("data-separator"),verticalSeparator:e.getAttribute("data-separator-vertical"),notesSeparator:e.getAttribute("data-separator-notes"),attributes:n(e)})})),Promise.all(r).then(s)}))}function o(e,t,n){const s=new RegExp(n,"mg"),r=new RegExp('([^"= ]+?)="([^"]+?)"|(data-[^"= ]+?)(?=[" ])',"mg");let i,l,o=e.nodeValue;if(i=s.exec(o)){const n=i[1];for(o=o.substring(0,i.index)+o.substring(s.lastIndex),e.nodeValue=o;l=r.exec(n);)l[2]?t.setAttribute(l[1],l[2]):t.setAttribute(l[3],"");return!0}return!1}function a(e,t,n,s,r){if(null!==t&&void 0!==t.childNodes&&t.childNodes.length>0){let n=t;for(let i=0;i<t.childNodes.length;i++){const l=t.childNodes[i];if(i>0){let e=i-1;for(;e>=0;){const s=t.childNodes[e];if("function"==typeof s.setAttribute&&"BR"!==s.tagName){n=s;break}e-=1}}let o=e;"section"===l.nodeName&&(o=l,n=l),"function"!=typeof l.setAttribute&&l.nodeType!==Node.COMMENT_NODE||a(o,l,n,s,r)}}t.nodeType===Node.COMMENT_NODE&&!1===o(t,n,s)&&o(t,e,r)}function c(){const n=e.getRevealElement().querySelectorAll("[data-markdown]:not([data-markdown-parsed])");return[].slice.call(n).forEach((function(e){e.setAttribute("data-markdown-parsed",!0);const n=e.querySelector("aside.notes"),s=t(e);e.innerHTML=P(s),a(e,e,null,e.getAttribute("data-element-attributes")||e.parentNode.getAttribute("data-element-attributes")||"\\.element\\s*?(.+?)$",e.getAttribute("data-attributes")||e.parentNode.getAttribute("data-attributes")||"\\.slide:\\s*?(\\S.+?)$"),n&&e.appendChild(n)})),Promise.resolve()}return{id:"markdown",init:function(t){e=t;let{renderer:n,animateLists:s,...r}=e.getConfig().markdown||{};return n||(n=new P.Renderer,n.code=(e,t)=>{let n="",s="";if(O.test(t)){let e=t.match(O)[2];e&&(n=`data-ln-start-from="${e.trim()}"`),s=t.match(O)[3].trim(),s=`data-line-numbers="${s}"`,t=t.replace(O,"").trim()}return`<pre><code ${s} ${n} class="${t}">${e=e.replace(/([&<>'"])/g,(e=>D[e]))}</code></pre>`}),!0===s&&(n.listitem=e=>`<li class="fragment">${e}</li>`),P.setOptions({renderer:n,...r}),l(e.getRevealElement()).then(c)},processSlides:l,convertSlides:c,slidify:i,marked:P}}}));
diff --git a/plugin/markdown/plugin.js b/plugin/markdown/plugin.js
index bb63de8f811..13fb87fb7db 100755
--- a/plugin/markdown/plugin.js
+++ b/plugin/markdown/plugin.js
@@ -95,7 +95,7 @@ const Plugin = () => {
 	 * values for what's not defined.
 	 */
 	function getSlidifyOptions( options ) {
-		const markdownConfig = deck.getConfig().markdown;
+		const markdownConfig = deck.getConfig?.().markdown;
 
 		options = options || {};
 		options.separator = options.separator || markdownConfig?.separator || DEFAULT_SLIDE_SEPARATOR;