Adding markdown + katex support

web/src/utils/render-markdown.ts

@@ -0,0 +1,12 @@
+import DOMPurify from "dompurify"
+import { marked } from "marked"
+import markedKatex from "marked-katex-extension"
+import "katex/dist/katex.min.css"
+
+marked.use(markedKatex({ throwOnError: false }))
+
+export function renderMarkdown(source: string): string {
+  return DOMPurify.sanitize(marked.parse(source) as string)
+}
+
+export default renderMarkdown