Function buildCDN

tools/build_cdn.js:31–96

(options)

let shas = {};

async function buildCDN(options) {
  install("./LICENSE", "LICENSE");
  install("./README.CDN.md", "README.md");
  await installPackageJSON(options);

  installStyles();

  // all the languages are built for the CDN and placed into `/languages`
  const languages = await getLanguages();

  let esmCoreSize = {};
  let esmCommonSize = {};

  await installLanguages(languages, options);

  // filter languages for inclusion in the highlight.js bundle
  let embedLanguages = filter(languages, options.languages);

  // it really makes no sense to embed ALL languages with the CDN build, it's
  // more likely we want to embed NONE and have completely separate run-time
  // loading of some sort
  if (embedLanguages.length === languages.length) {
    embedLanguages = [];
  }

  const size = await buildCore("highlight", embedLanguages, { minify: options.minify, format: "cjs" });
  if (options.esm) {
    mkdir("es");
    await fs.writeFile(`${process.env.BUILD_DIR}/es/package.json`, `{ "type": "module" }`);
    esmCoreSize = await buildCore("core", [], { minify: options.minify, format: "es" });
    esmCommonSize = await buildCore("highlight", embedLanguages, { minify: options.minify, format: "es" });
  }
  shas = {
    ...size.shas, ...esmCommonSize.shas, ...esmCoreSize.shas, ...shas
  };

  await buildSRIDigests(shas);

  log("-----");
  log("Embedded Lang           :",
    embedLanguages.map((el) => el.minified.length).reduce((acc, curr) => acc + curr, 0), "bytes");
  log("All Lang                :",
    languages.map((el) => el.minified.length).reduce((acc, curr) => acc + curr, 0), "bytes");
  log("highlight.js            :",
    size.fullSize, "bytes");

  if (options.minify) {
    log("highlight.min.js        :", size.minified, "bytes");
    log("highlight.min.js.gz     :", zlib.gzipSync(size.minifiedSrc).length, "bytes");
  } else {
    log("highlight.js.gz         :", zlib.gzipSync(size.fullSrc).length, "bytes");
  }
  if (options.esm) {
    log("es/core.js              :", esmCoreSize.fullSize, "bytes");
    log("es/highlight.js         :", esmCommonSize.fullSize, "bytes");
    if (options.minify) {
      log("es/core.min.js          :", esmCoreSize.minified, "bytes");
      log("es/core.min.js.gz       :", zlib.gzipSync(esmCoreSize.minifiedSrc).length, "bytes");