Function createCJSNoSourceModuleWrap

lib/internal/modules/esm/translators.js:284–320

* Creates a ModuleWrap object for a CommonJS module without source texts. * @param {string} url - The URL of the module. * @param {string|undefined} parentURL - URL of the parent module, if any. * @returns {ModuleWrap} The ModuleWrap object for the CommonJS module.

(url, parentURL)

 * @returns {ModuleWrap} The ModuleWrap object for the CommonJS module.
 */
function createCJSNoSourceModuleWrap(url, parentURL) {
  debug(`Translating CJSModule without source ${url}`);
  const isMain = (parentURL === undefined);

  const filename = urlToFilename(url);

  const module = cjsEmplaceModuleCacheEntry(filename);
  cjsCache.set(url, module);

  if (isMain) {
    setOwnProperty(process, 'mainModule', module);
  }

  // Addon export names are not known until the addon is loaded.
  const exportNames = ['default', 'module.exports'];
  return new ModuleWrap(url, undefined, exportNames, function evaluationCallback() {
    debug(`Loading CJSModule ${url}`);

    if (!module.loaded) {
      // If it gets here in the translators, the hooks must have already been invoked
      // in the loader. Skip them in the synthetic module evaluation step.
      wrapModuleLoad(filename, null, isMain, kShouldSkipModuleHooks);
    }

    /** @type {import('./loader').ModuleExports} */
    let exports;
    if (module[kModuleExport] !== undefined) {
      exports = module[kModuleExport];
      module[kModuleExport] = undefined;
    } else {
      ({ exports } = module);
    }

    this.setExport('default', exports);
    this.setExport('module.exports', exports);
  }, module);
}

translators.set('commonjs-sync', function requireCommonJS(url, translateContext, parentURL) {
  return createCJSModuleWrap(url, translateContext, parentURL);