35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
import markdownIt from "markdown-it" // rendering markdown
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import markdownItTexMath from "markdown-it-texmath" // rendering mathematical expression
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import markdownItAnchor from "markdown-it-anchor" // markdown anchor
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import markdownItTaskCheckbox from "markdown-it-task-checkbox"
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import hljs from "highlight.js" // code block highlighting
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import katex from "katex" // rendering mathematical expression
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import { nthIndex } from "./util"
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const md = markdownIt({
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// https://github.com/highlightjs/highlight.js/blob/main/SUPPORTED_LANGUAGES.md
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highlight: function (str, lang) {
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if (lang && hljs.getLanguage(lang)) {
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try {
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return hljs.highlight(str, { language: lang }).value
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// eslint-disable-next-line no-empty
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} catch (error) {}
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}
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return "" // use external default escaping
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},
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html: true,
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})
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.use(markdownItTaskCheckbox)
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.use(markdownItTexMath, {
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engine: katex,
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delimiters: "dollars",
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katexOptions: { macros: { "\\RR": "\\mathbb{R}" } },
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})
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.use(markdownItAnchor, {})
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export function parseMarkdown(markdownRaw: string): string {
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return (
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md.render(markdownRaw.slice(nthIndex(markdownRaw, "---", 2) + 3)) || ""
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)
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}
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