@astrojs/markdoc/dist/load-config.js

Add support for Markdoc in your Astro site

import * as fs from "node:fs";
import { fileURLToPath } from "node:url";
import { build as esbuild } from "esbuild";
import { MarkdocError } from "./utils.js";
const SUPPORTED_MARKDOC_CONFIG_FILES = [
  "markdoc.config.js",
  "markdoc.config.mjs",
  "markdoc.config.mts",
  "markdoc.config.ts"
];
async function loadMarkdocConfig(astroConfig) {
  let markdocConfigUrl;
  for (const filename of SUPPORTED_MARKDOC_CONFIG_FILES) {
    const filePath = new URL(filename, astroConfig.root);
    if (!fs.existsSync(filePath)) continue;
    markdocConfigUrl = filePath;
    break;
  }
  if (!markdocConfigUrl) return;
  const { code } = await bundleConfigFile({
    markdocConfigUrl,
    astroConfig
  });
  const config = await loadConfigFromBundledFile(astroConfig.root, code);
  return {
    config,
    fileUrl: markdocConfigUrl
  };
}
async function bundleConfigFile({
  markdocConfigUrl,
  astroConfig
}) {
  let markdocError;
  const result = await esbuild({
    absWorkingDir: fileURLToPath(astroConfig.root),
    entryPoints: [fileURLToPath(markdocConfigUrl)],
    outfile: "out.js",
    write: false,
    target: ["node16"],
    platform: "node",
    packages: "external",
    bundle: true,
    format: "esm",
    sourcemap: "inline",
    metafile: true,
    plugins: [
      {
        name: "stub-astro-imports",
        setup(build) {
          build.onResolve({ filter: /.*\.astro$/ }, () => {
            markdocError = new MarkdocError({
              message: "`.astro` files are no longer supported in the Markdoc config.",
              hint: "Use the `component()` utility to specify a component path instead. See https://docs.astro.build/en/guides/integrations-guide/markdoc/"
            });
            return {
              // Stub with an unused default export.
              path: "data:text/javascript,export default true",
              external: true
            };
          });
        }
      }
    ]
  });
  if (markdocError) throw markdocError;
  const { text } = result.outputFiles[0];
  return {
    code: text,
    dependencies: result.metafile ? Object.keys(result.metafile.inputs) : []
  };
}
async function loadConfigFromBundledFile(root, code) {
  const tmpFileUrl = new URL(`markdoc.config.timestamp-${Date.now()}.mjs`, root);
  fs.writeFileSync(tmpFileUrl, code);
  try {
    return (await import(tmpFileUrl.pathname)).default;
  } finally {
    try {
      fs.unlinkSync(tmpFileUrl);
    } catch {
    }
  }
}
export {
  SUPPORTED_MARKDOC_CONFIG_FILES,
  loadMarkdocConfig
};