quartz-research-note/quartz/plugins/transformers/latex.ts

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import remarkMath from "remark-math"
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import rehypeKatex from "rehype-katex"
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import rehypeMathjax from "rehype-mathjax/svg"
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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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if (engine === "katex") {
return [[rehypeKatex, { output: "html" }]]
} else {
return [rehypeMathjax]
}
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},
externalResources() {
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if (engine === "katex") {
return {
css: [
// base css
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"https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/katex.min.css",
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],
js: [
{
// fix copy behaviour: https://github.com/KaTeX/KaTeX/blob/main/contrib/copy-tex/README.md
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src: "https://cdn.jsdelivr.net/npm/katex@0.16.9/dist/contrib/copy-tex.min.js",
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loadTime: "afterDOMReady",
contentType: "external",
},
],
}
} else {
return {}
}
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},
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}
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}