solana-agent-kit/examples/agent-kit-nextjs-langchain/utils/markdownToHTML.ts

import { marked } from "marked";
import DOMPurify from "isomorphic-dompurify";

interface MarkedOptions {
	gfm: boolean;
	breaks: boolean;
	headerIds: boolean;
	mangle: false;
	highlight?: (code: string, lang: string) => string;
}

// Configure marked options
const markedOptions: MarkedOptions = {
	gfm: true, // GitHub Flavored Markdown
	breaks: true, // Convert \n to <br>
	headerIds: true, // Add ids to headers
	mangle: false, // Don't escape HTML
	highlight: function (code: string, lang: string): string {
		// You can add syntax highlighting here if needed
		return code;
	},
};

marked.setOptions(markedOptions);

// Basic markdown to HTML conversion with sanitization
export default function markdownToHtml(markdown: string) {
	const rawHtml = marked.parse(markdown);
	return DOMPurify.sanitize(rawHtml as string);
}