Method #asyncLink

lib/internal/modules/esm/module_job.js:268–304

* @param {ModuleRequestType} requestType Type of the module request. * @returns {Promise }

(requestType)

   * @returns {Promise<ModuleJobBase[]>}
   */
  async #asyncLink(requestType) {
    assert(this.loader.isForAsyncLoaderHookWorker);
    this.module = await this.modulePromise;
    assert(this.module instanceof ModuleWrap);
    const moduleRequests = this.module.getModuleRequests();
    // Create an ArrayLike to avoid calling into userspace with `.then`
    // when returned from the async function.
    // Modules should be aligned with the moduleRequests array in order.
    const modulePromises = Array(moduleRequests.length);
    const evaluationDepJobs = [];
    this.commonJsDeps = Array(moduleRequests.length);
    for (let idx = 0; idx < moduleRequests.length; idx++) {
      const request = moduleRequests[idx];
      // Explicitly keeping track of dependency jobs is needed in order
      // to flatten out the dependency graph below in `asyncInstantiate()`,
      // so that circular dependencies can't cause a deadlock by two of
      // these `link` callbacks depending on each other.
      // TODO(joyeecheung): split this into two iterators, one for resolving and one for loading so
      // that hooks can pre-fetch sources off-thread.
      const dependencyJobPromise = this.loader.getOrCreateModuleJob(this.url, request, requestType);
      const modulePromise = PromisePrototypeThen(dependencyJobPromise, (job) => {
        debug(`ModuleJob.asyncLink() ${this.url} -> ${request.specifier}`, job);
        if (this.shouldRunModule(request.phase)) {
          ArrayPrototypePush(evaluationDepJobs, job);
        }
        return job.modulePromise;
      });
      modulePromises[idx] = modulePromise;
    }
    const modules = await SafePromiseAllReturnArrayLike(modulePromises);
    for (let idx = 0; idx < moduleRequests.length; idx++) {
      this.commonJsDeps[idx] = modules[idx].isCommonJS;
    }

    this.module.link(modules);
    return evaluationDepJobs;
  }

  #instantiate() {
    if (this.instantiated === undefined) {