markz

Other parsers

What pnpm compare times markz beside, for our own insight and never published: markdown-exit, the fastest JavaScript parser; marked, a regex lexer; and micromark with GFM, the spec-exact state machine that is also the tests' oracle. Each gives its parse to HTML, set up with GFM where it has it, and each is imported only when it's loaded, so a process that times one parser never pays for another's startup. They read the common variant of each document (corpus.ts), the blocks every parser reads alike, so none is slower only because it does more.

export const OTHERS = ["markdown-exit", "marked", "micromark"];

export async function load(name: string): Promise<(text: string) => string> {
  switch (name) {
    case "markz": {
      const { parse, html } = await import("../../src/index");
      return (s) => html(parse(s));
    }
    case "markdown-exit": {
      const md = new (await import("markdown-exit")).MarkdownExit();
      return (s) => md.render(s);
    }
    case "marked": {
      const { Marked } = await import("marked");
      const marked = new Marked({ gfm: true, async: false });
      return (s) => marked.parse(s) as string;
    }
    case "micromark": {
      const { micromark } = await import("micromark");
      const { gfm, gfmHtml } = await import("micromark-extension-gfm");
      const options = { extensions: [gfm()], htmlExtensions: [gfmHtml()] };
      return (s) => micromark(s, options);
    }
  }
  throw new Error(`unknown parser ${name}`);
}