astro/dist/vite-plugin-html/transform/index.js

Astro is a modern site builder with web best practices, performance, and DX front-of-mind.

import MagicString from "magic-string";
import { rehype } from "rehype";
import { VFile } from "vfile";
import escape from "./escape.js";
import slots, { SLOT_PREFIX } from "./slots.js";
async function transform(code, id) {
  const s = new MagicString(code, { filename: id });
  const parser = rehype().data("settings", { fragment: true }).use(escape, { s }).use(slots, { s });
  const vfile = new VFile({ value: code, path: id });
  await parser.process(vfile);
  s.prepend(`function render({ slots: ${SLOT_PREFIX} }) {
		return \``);
  s.append('`\n	}\nrender["astro:html"] = true;\nexport default render;');
  return {
    code: s.toString(),
    map: s.generateMap({ hires: "boundary" })
  };
}
export {
  transform
};