roadmap/quartz/plugins/transformers/latex.ts

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import remarkMath from "remark-math"
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import rehypeKatex from "rehype-katex"
import rehypeMathjax from "rehype-mathjax/svg.js"
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import { QuartzTransformerPlugin } from "../types"
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interface Options {
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renderEngine: "katex" | "mathjax"
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}
export const Latex: QuartzTransformerPlugin<Options> = (opts?: Options) => {
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const engine = opts?.renderEngine ?? "katex"
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return {
name: "Latex",
markdownPlugins() {
return [remarkMath]
},
htmlPlugins() {
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return [engine === "katex" ? [rehypeKatex, { output: "html" }] : [rehypeMathjax]]
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},
externalResources() {
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return engine === "katex"
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? {
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css: [
// base css
"https://cdn.jsdelivr.net/npm/katex@0.16.0/dist/katex.min.css",
],
js: [
{
// fix copy behaviour: https://github.com/KaTeX/KaTeX/blob/main/contrib/copy-tex/README.md
src: "https://cdn.jsdelivr.net/npm/katex@0.16.7/dist/contrib/copy-tex.min.js",
loadTime: "afterDOMReady",
contentType: "external",
},
],
}
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: {}
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},
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}
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}