38 lines
1.6 KiB
JavaScript
38 lines
1.6 KiB
JavaScript
// setup web worker to avoid causing issues for the rendering thread
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async function setup(){
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// start fetching css sooner rather than latter
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const baseCssProm = fetch("https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/default.min.css").then(res=>res.text());
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const lightCssProm = fetch("/static/css/light-code.css").then(res=>res.text());
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const darkCssProm = fetch("/static/css/dark-code.css").then(res=>res.text());
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const code = document.querySelectorAll("pre.sourceCode");
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const worker = new Worker('/static/js/code_highlighting_worker.mjs');
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worker.onmessage = (event) => {
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const [index, newTxt] = event.data;
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code[index].innerHTML = newTxt;
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}
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for(let i = 0;i<code.length;i++){
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worker.postMessage([i, code[i].textContent]);
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}
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for(const c of code){
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c.classList.add("hljs");
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}
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// setting up the css for highlighting with previously fetched css
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const baseStylesheet = new CSSStyleSheet();
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const lightThemeSheet = new CSSStyleSheet();
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const darkThemeSheet = new CSSStyleSheet();
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//shenanigans done to avoid awaiting each promise sequentially
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await Promise.all([
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(async()=>{return await baseStylesheet.replace(await baseCssProm)})(),
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(async()=>{return await lightThemeSheet.replace(await lightCssProm)})(),
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(async()=>{return await darkThemeSheet.replace(await darkCssProm)})(),
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]);
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document.adoptedStyleSheets.push(baseStylesheet);
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document.adoptedStyleSheets.push(lightThemeSheet);
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document.adoptedStyleSheets.push(darkThemeSheet);
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}
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addEventListener('load', setup);
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if(document.readyState == "complete") await setup();
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