46 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			46 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
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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}
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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 {
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    name: "Latex",
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    markdownPlugins() {
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      return [remarkMath]
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    },
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    htmlPlugins() {
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      if (engine === "katex") {
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        return [[rehypeKatex, { output: "html" }]]
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      } else {
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        return [rehypeMathjax]
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      }
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    },
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    externalResources() {
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      if (engine === "katex") {
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        return {
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          css: [
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            // base css
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            "https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.16.9/katex.min.css",
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          ],
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          js: [
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            {
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              // fix copy behaviour: https://github.com/KaTeX/KaTeX/blob/main/contrib/copy-tex/README.md
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              src: "https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.16.9/contrib/copy-tex.min.js",
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              loadTime: "afterDOMReady",
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              contentType: "external",
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            },
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          ],
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        }
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      } else {
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        return {}
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      }
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    },
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  }
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}
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