Method register

lib/internal/modules/esm/loader.js:659–668

* @see AsyncLoaderHooks.register * @returns {any}

(specifier, parentURL, data, transferList, isInternal)

   * @returns {any}
   */
  register(specifier, parentURL, data, transferList, isInternal) {
    if (!this.#asyncLoaderHooks) {
      // On the loader hook worker thread, the #asyncLoaderHooks must already have been initialized
      // to be an instance of AsyncLoaderHooksOnLoaderHookWorker, so this branch can only ever
      // be hit on a non-loader-hook thread that will talk to the loader hook worker thread.
      const { AsyncLoaderHooksProxiedToLoaderHookWorker } = require('internal/modules/esm/hooks');
      this.#setAsyncLoaderHooks(new AsyncLoaderHooksProxiedToLoaderHookWorker());
    }
    return this.#asyncLoaderHooks.register(`${specifier}`, `${parentURL}`, data, transferList, isInternal);
  }

  /**
   * Resolve a module request to a URL identifying the location of the module. Handles customization hooks,