Function buildRollup

Gulpfile.ts:332–691

(packages: PackageInfo[], buildStandalone?: boolean)

const babelVersion =
  require("./packages/babel-core/package.json").version + versionSuffix;
function buildRollup(packages: PackageInfo[], buildStandalone?: boolean) {
  const sourcemap = process.env.NODE_ENV === "production";
  return Promise.all(
    packages.map(
      async ({
        src,
        format,
        inputs,
        dest,
        name,
        filename,
        envName = "rollup",
        pkgJSON,
      }) => {
        const version = pkgJSON.version + versionSuffix;
        const {
          dependencies = {},
          peerDependencies = {},
          imports = {},
        } = pkgJSON;
        const external = [
          ...Object.keys(dependencies),
          ...Object.keys(peerDependencies),
          ...Object.keys(imports),
          // @babel/compat-data sub exports
          /@babel\/compat-data\/.*/,
          // @babel/helper-globals sub exports
          /@babel\/helper-globals\/.*/,
          // Ideally they should be constructed from package.json exports
          // required by modules-commonjs
          /babel-plugin-dynamic-import-node\/utils/,
          // required by preset-env
          /@babel\/preset-modules\/.*/,
          // required by babel-node
          "core-js/stable/index.js",
          "kexec",
          // required by eslint-plugin
          "eslint/use-at-your-own-risk",
        ];

        log(
          `Compiling '${styleText("cyan", inputs.join(", "))}' with rollup ...`
        );
        const bundle = await rollup({
          input: Object.fromEntries(
            inputs.map(inputName => [
              filename ||
                // ./packages/babel-foo/src/bar/baz.ts -> bar/baz.js
                inputName
                  .replaceAll("\\", "/")
                  .split("/")
                  .slice(4)
                  .join("/")
                  .replace(/(\.[cm]?)ts$/, "$1js"),
              inputName,
            ])
          ),
          external: buildStandalone ? [] : external,