refactor: concat built-in js scripts

chore: vendorize katex 0.16.8

chore: vendorize flexsearch 0.7.31

chore: add katex fonts

chore: vendorize mermaid

* add option to disable math globally

chore: fix edit url nil variable

chore: add comments

assets/js/flexsearch.js

@@ -8,7 +8,7 @@
 // {{ end }}
 
 (function () {
-  const searchDataURL = '{{ $searchData.Permalink }}';
+  const searchDataURL = '{{ $searchData.RelPermalink }}';
 
   const inputElements = document.querySelectorAll('.search-input');
   for (const el of inputElements) {

assets/js/menu.js

@@ -1,3 +1,5 @@
+// Hamburger menu for mobile navigation
+
 const menu = document.querySelector('.hamburger-menu');
 
 menu.addEventListener('click', (e) => {

assets/vendor/flexsearch/flexsearch.bundle.min.js

@@ -0,0 +1,39 @@
+/**
+ * Skipped minification because the original files appears to be already minified.
+ * Original file: /npm/flexsearch@0.7.31/dist/flexsearch.bundle.js
+ *
+ * Do NOT use SRI with dynamically generated files! More information: https://www.jsdelivr.com/using-sri-with-dynamic-files
+ */
+/**!
+ * FlexSearch.js v0.7.31 (Bundle)
+ * Copyright 2018-2022 Nextapps GmbH
+ * Author: Thomas Wilkerling
+ * Licence: Apache-2.0
+ * https://github.com/nextapps-de/flexsearch
+ */
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+t.set=function(a,b){this.store[a]=b;return this};t.searchCache=oa;t.export=function(a,b,c,d,e){e||(e=0);d||(d=0);if(d<this.h.length){const f=this.h[d],g=this.index[f];b=this;setTimeout(function(){g.export(a,b,e?f:"",d,e++)||(d++,e=1,b.export(a,b,f,d,e))})}else{let f,g;switch(e){case 1:f="tag";g=this.l;break;case 2:f="store";g=this.store;break;default:return}ra(a,this,c,f,d,e,g)}};
+t.import=function(a,b){if(b)switch(x(b)&&(b=JSON.parse(b)),a){case "tag":this.l=b;break;case "reg":this.m=!1;this.register=b;for(let d=0,e;d<this.h.length;d++)e=this.index[this.h[d]],e.register=b,e.m=!1;break;case "store":this.store=b;break;default:a=a.split(".");const c=a[0];a=a[1];c&&a&&this.index[c].import(a,b)}};la(Q.prototype);var Ba={encode:Aa,F:!1,G:""};const Ca=[F("[\u00e0\u00e1\u00e2\u00e3\u00e4\u00e5]"),"a",F("[\u00e8\u00e9\u00ea\u00eb]"),"e",F("[\u00ec\u00ed\u00ee\u00ef]"),"i",F("[\u00f2\u00f3\u00f4\u00f5\u00f6\u0151]"),"o",F("[\u00f9\u00fa\u00fb\u00fc\u0171]"),"u",F("[\u00fd\u0177\u00ff]"),"y",F("\u00f1"),"n",F("[\u00e7c]"),"k",F("\u00df"),"s",F(" & ")," and "];function Aa(a){var b=a=""+a;b.normalize&&(b=b.normalize("NFD").replace(ea,""));return ca.call(this,b.toLowerCase(),!a.normalize&&Ca)};var Ea={encode:Da,F:!1,G:"strict"};const Fa=/[^a-z0-9]+/,Ga={b:"p",v:"f",w:"f",z:"s",x:"s","\u00df":"s",d:"t",n:"m",c:"k",g:"k",j:"k",q:"k",i:"e",y:"e",u:"o"};function Da(a){a=Aa.call(this,a).join(" ");const b=[];if(a){const c=a.split(Fa),d=c.length;for(let e=0,f,g=0;e<d;e++)if((a=c[e])&&(!this.filter||!this.filter[a])){f=a[0];let h=Ga[f]||f,k=h;for(let m=1;m<a.length;m++){f=a[m];const n=Ga[f]||f;n&&n!==k&&(h+=n,k=n)}b[g++]=h}}return b};var Ia={encode:Ha,F:!1,G:""};const Ja=[F("ae"),"a",F("oe"),"o",F("sh"),"s",F("th"),"t",F("ph"),"f",F("pf"),"f",F("(?![aeo])h(?![aeo])"),"",F("(?!^[aeo])h(?!^[aeo])"),""];function Ha(a,b){a&&(a=Da.call(this,a).join(" "),2<a.length&&(a=E(a,Ja)),b||(1<a.length&&(a=ha(a)),a&&(a=a.split(" "))));return a||[]};var La={encode:Ka,F:!1,G:""};const Ma=F("(?!\\b)[aeo]");function Ka(a){a&&(a=Ha.call(this,a,!0),1<a.length&&(a=a.replace(Ma,"")),1<a.length&&(a=ha(a)),a&&(a=a.split(" ")));return a||[]};G["latin:default"]=ja;G["latin:simple"]=Ba;G["latin:balance"]=Ea;G["latin:advanced"]=Ia;G["latin:extra"]=La;const W=self;let Y;const Z={Index:K,Document:Q,Worker:O,registerCharset:function(a,b){G[a]=b},registerLanguage:function(a,b){ka[a]=b}};(Y=W.define)&&Y.amd?Y([],function(){return Z}):W.exports?W.exports=Z:W.FlexSearch=Z;}(this));

assets/vendor/katex/auto-render.min.js

@@ -0,0 +1 @@
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("katex")):"function"==typeof define&&define.amd?define(["katex"],t):"object"==typeof exports?exports.renderMathInElement=t(require("katex")):e.renderMathInElement=t(e.katex)}("undefined"!=typeof self?self:this,(function(e){return function(){"use strict";var t={771:function(t){t.exports=e}},r={};function n(e){var i=r[e];if(void 0!==i)return i.exports;var a=r[e]={exports:{}};return t[e](a,a.exports,n),a.exports}n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,{a:t}),t},n.d=function(e,t){for(var r in t)n.o(t,r)&&!n.o(e,r)&&Object.defineProperty(e,r,{enumerable:!0,get:t[r]})},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)};var i={};return function(){n.d(i,{default:function(){return s}});var e=n(771),t=n.n(e),r=function(e,t,r){for(var n=r,i=0,a=e.length;n<t.length;){var o=t[n];if(i<=0&&t.slice(n,n+a)===e)return n;"\\"===o?n++:"{"===o?i++:"}"===o&&i--,n++}return-1},a=/^\\begin{/,o=function(e,t){for(var n,i=[],o=new RegExp("("+t.map((function(e){return e.left.replace(/[-/\\^$*+?.()|[\]{}]/g,"\\$&")})).join("|")+")");-1!==(n=e.search(o));){n>0&&(i.push({type:"text",data:e.slice(0,n)}),e=e.slice(n));var l=t.findIndex((function(t){return e.startsWith(t.left)}));if(-1===(n=r(t[l].right,e,t[l].left.length)))break;var d=e.slice(0,n+t[l].right.length),s=a.test(d)?d:e.slice(t[l].left.length,n);i.push({type:"math",data:s,rawData:d,display:t[l].display}),e=e.slice(n+t[l].right.length)}return""!==e&&i.push({type:"text",data:e}),i},l=function(e,r){var n=o(e,r.delimiters);if(1===n.length&&"text"===n[0].type)return null;for(var i=document.createDocumentFragment(),a=0;a<n.length;a++)if("text"===n[a].type)i.appendChild(document.createTextNode(n[a].data));else{var l=document.createElement("span"),d=n[a].data;r.displayMode=n[a].display;try{r.preProcess&&(d=r.preProcess(d)),t().render(d,l,r)}catch(e){if(!(e instanceof t().ParseError))throw e;r.errorCallback("KaTeX auto-render: Failed to parse `"+n[a].data+"` with ",e),i.appendChild(document.createTextNode(n[a].rawData));continue}i.appendChild(l)}return i},d=function e(t,r){for(var n=0;n<t.childNodes.length;n++){var i=t.childNodes[n];if(3===i.nodeType){for(var a=i.textContent,o=i.nextSibling,d=0;o&&o.nodeType===Node.TEXT_NODE;)a+=o.textContent,o=o.nextSibling,d++;var s=l(a,r);if(s){for(var f=0;f<d;f++)i.nextSibling.remove();n+=s.childNodes.length-1,t.replaceChild(s,i)}else n+=d}else 1===i.nodeType&&function(){var t=" "+i.className+" ";-1===r.ignoredTags.indexOf(i.nodeName.toLowerCase())&&r.ignoredClasses.every((function(e){return-1===t.indexOf(" "+e+" ")}))&&e(i,r)}()}},s=function(e,t){if(!e)throw new Error("No element provided to render");var r={};for(var n in t)t.hasOwnProperty(n)&&(r[n]=t[n]);r.delimiters=r.delimiters||[{left:"$$",right:"$$",display:!0},{left:"\\(",right:"\\)",display:!1},{left:"\\begin{equation}",right:"\\end{equation}",display:!0},{left:"\\begin{align}",right:"\\end{align}",display:!0},{left:"\\begin{alignat}",right:"\\end{alignat}",display:!0},{left:"\\begin{gather}",right:"\\end{gather}",display:!0},{left:"\\begin{CD}",right:"\\end{CD}",display:!0},{left:"\\[",right:"\\]",display:!0}],r.ignoredTags=r.ignoredTags||["script","noscript","style","textarea","pre","code","option"],r.ignoredClasses=r.ignoredClasses||[],r.errorCallback=r.errorCallback||console.error,r.macros=r.macros||{},d(e,r)}}(),i=i.default}()}));

exampleSite/hugo.yaml

@@ -79,6 +79,9 @@ params:
   search:
     disabled: false
 
+  math:
+    disabled: false
+
   editURL:
     disabled: false
     base: "https://github.com/imfing/hextra/edit/dev/exampleSite/content"

layouts/partials/footer.html

@@ -1,7 +1,7 @@
 {{- $enableFooterSwitches := .Scratch.Get "enableFooterSwitches" | default false -}}
 
 
-<footer class="bg-gray-100 pb-[env(safe-area-inset-bottom)] dark:bg-neutral-900 print:bg-transparent">
+<footer class="hextra-footer bg-gray-100 pb-[env(safe-area-inset-bottom)] dark:bg-neutral-900 print:bg-transparent">
   {{- if $enableFooterSwitches }}{{ template "footer-switches" }}{{ end -}}
   <hr class="dark:border-neutral-800" />
   <div class="mx-auto flex max-w-[90rem] justify-center py-12 pl-[max(env(safe-area-inset-left),1.5rem)] pr-[max(env(safe-area-inset-right),1.5rem)] text-gray-600 dark:text-gray-400 md:justify-start">

layouts/partials/scripts.html

@@ -1,42 +1,52 @@
-{{ $themeJS := resources.Get "js/theme.js" }}
-<script src="{{ $themeJS.RelPermalink }}"></script>
+{{ $jsTheme := resources.Get "js/theme.js" }}
+{{ $jsMenu := resources.Get "js/menu.js" }}
+{{ $jsCodeCopy := resources.Get "js/code-copy.js" }}
+{{ $jsTabs := resources.Get "js/code-copy.js" }}
 
-{{ $codeCopyJS := resources.Get "js/code-copy.js" }}
-<script src="{{ $codeCopyJS.RelPermalink }}"></script>
+{{ $scripts := slice $jsTheme $jsMenu $jsCodeCopy $jsTabs | resources.Concat "js/main.js" }}
+{{ if hugo.IsProduction }}
+  {{ $scripts = $scripts | minify | fingerprint }}
+{{ end }}
+<script defer src="{{ $scripts.RelPermalink }}" integrity="{{ $scripts.Data.Integrity }}"></script>
 
-{{ $menuJS := resources.Get "js/menu.js" }}
-<script src="{{ $menuJS.RelPermalink }}"></script>
+{{/* FlexSearch */}}
+{{- if not site.Params.search.disabled -}}
+  {{ $jsSearchScript := printf "%s.search.js" .Language.Lang }}
+  {{ $jsSearch := resources.Get "js/flexsearch.js" | resources.ExecuteAsTemplate $jsSearchScript . }}
+  {{ if hugo.IsProduction }}
+    {{ $jsSearch = $jsSearch | minify | fingerprint }}
+  {{ end }}
+  {{ $flexSearchJS := resources.Get "vendor/flexsearch/flexsearch.bundle.min.js" | fingerprint }}
+  <script defer src="{{ $flexSearchJS.RelPermalink }}" integrity="{{ $flexSearchJS.Data.Integrity }}"></script>
+  <script defer src="{{ $jsSearch.RelPermalink }}" integrity="{{ $jsSearch.Data.Integrity }}"></script>
+{{- end -}}
 
-{{ if .Page.Store.Get "hasMermaid" }}
-  <script type="module">
-    // TODO: embed mermaid.min.js in the theme
-    import mermaid from "https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.esm.min.mjs";
-    const theme = document.documentElement.classList.contains("dark") ? "dark" : "default";
-    mermaid.initialize({ startOnLoad: true, theme: theme });
+{{/* Mermaid */}}
+{{ if .Page.Store.Get "hasMermaid" -}}
+  {{ $mermaidJS := resources.Get "vendor/mermaid/mermaid.min.js" | fingerprint }}
+  <script defer src="{{ $mermaidJS.RelPermalink }}" integrity="{{ $mermaidJS.Data.Integrity }}"></script>
+  <script>
+    document.addEventListener("DOMContentLoaded", function () {
+      const theme = document.documentElement.classList.contains("dark") ? "dark" : "default";
+      mermaid.initialize({ startOnLoad: true, theme: theme });
+    });
   </script>
 {{ end }}
 
-{{ if .HasShortcode "tabs" }}
-  {{ $tabsJS := resources.Get "js/tabs.js" }}
-  <script src="{{ $tabsJS.RelPermalink }}"></script>
-{{ end }}
-
-
-<!-- TODO: use feature flag for search and embed flexsearch -->
-{{ $searchJSFile := printf "%s.search.js" .Language.Lang }}
-{{ $searchJS := resources.Get "js/flexsearch.js" | resources.ExecuteAsTemplate $searchJSFile . }}
-{{ if hugo.IsProduction }}
-  {{ $searchJS = $searchJS | minify | fingerprint }}
-{{ end }}
-<script defer src="https://cdn.jsdelivr.net/npm/flexsearch@0.7.31/dist/flexsearch.bundle.min.js"></script>
-<script defer src="{{ $searchJS.RelPermalink }}"></script>
-
-{{ if .Page.Params.math }}
-  <!-- TODO: embed katex in the theme -->
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.min.css" integrity="sha384-GvrOXuhMATgEsSwCs4smul74iXGOixntILdUW9XmUC6+HX0sLNAK3q71HotJqlAn" crossorigin="anonymous" />
-  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.min.js" integrity="sha384-cpW21h6RZv/phavutF+AuVYrr+dA8xD9zs6FwLpaCct6O9ctzYFfFr4dgmgccOTx" crossorigin="anonymous"></script>
-  <script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/contrib/auto-render.min.js" integrity="sha384-+VBxd3r6XgURycqtZ117nYw44OOcIax56Z4dCRWbxyPt0Koah1uHoK0o4+/RRE05" crossorigin="anonymous"></script>
+{{/* KaTex */}}
+{{ if and (not site.Params.math.disabled) .Page.Params.math }}
+  {{ $katexCSS := resources.Get "vendor/katex/katex.min.css" | fingerprint }}
+  {{ $katexJS := resources.Get "vendor/katex/katex.min.js" | fingerprint }}
+  {{ $katexAutoRenderJS := resources.Get "vendor/katex/auto-render.min.js" | fingerprint }}
+  <link type="text/css" rel="stylesheet" href="{{ $katexCSS.RelPermalink }}" integrity="{{ $katexCSS.Data.Integrity }}" />
+  <script defer src="{{ $katexJS.RelPermalink }}" integrity="{{ $katexJS.Data.Integrity }}"></script>
+  <script defer src="{{ $katexAutoRenderJS.RelPermalink }}" integrity="{{ $katexAutoRenderJS.Data.Integrity }}"></script>
+  {{ $katexFonts := resources.Match "vendor/katex/fonts/*" }}
+  {{ range $katexFonts }}
+    {{ .Publish }}
+  {{ end }}
   <script>
+    // TODO: make render options configurable
     document.addEventListener("DOMContentLoaded", function () {
       renderMathInElement(document.body, {
         delimiters: [

layouts/partials/toc.html

@@ -4,7 +4,7 @@
 {{- with site.Params.toc.disabled -}}{{ $toc = not . }}{{- end -}}
 
 
-<nav class="order-last hidden w-64 shrink-0 xl:block print:hidden px-4" aria-label="table of contents">
+<nav class="hextra-toc order-last hidden w-64 shrink-0 xl:block print:hidden px-4" aria-label="table of contents">
   {{ if $toc }}
     <div class="sticky top-16 overflow-y-auto pr-4 pt-6 text-sm [hyphens:auto] max-h-[calc(100vh-4rem-env(safe-area-inset-bottom))] ltr:-mr-4 rtl:-ml-4">
       {{ with .Fragments.Headings }}
@@ -26,7 +26,8 @@
       {{/* TOC bottom part */}}
       <div class="{{ $borderClass }} sticky bottom-0 flex flex-col items-start gap-2 pb-8 dark:border-neutral-800 contrast-more:border-t contrast-more:border-neutral-400 contrast-more:shadow-none contrast-more:dark:border-neutral-400">
         {{- if not site.Params.editURL.disabled -}}
-          {{- $editURL := urls.JoinPath site.Params.editURL.base .File.Path -}}
+          {{- $editURL := site.Params.editURL.base | default "" -}}
+          {{- with .File -}}{{ $editURL = urls.JoinPath $editURL .Path }}{{- end -}}
           {{- with .Params.editURL -}}{{ $editURL = .Params.editURL }}{{- end -}}
           <a class="text-xs font-medium text-gray-500 hover:text-gray-900 dark:text-gray-400 dark:hover:text-gray-100 contrast-more:text-gray-800 contrast-more:dark:text-gray-50" href="{{ $editURL }}" target="_blank" rel="noreferer">{{ i18n "article.edit_this_page" }}</a>
         {{- end -}}