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- 'use strict';
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
- exports.default = messageParent;
- var _types = require('../types');
- /**
- * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
- const isWorkerThread = (() => {
- try {
- // `Require` here to support Node v10
- const {isMainThread, parentPort} = require('worker_threads');
- return !isMainThread && parentPort != null;
- } catch {
- return false;
- }
- })();
- function messageParent(message, parentProcess = process) {
- if (isWorkerThread) {
- // `Require` here to support Node v10
- const {parentPort} = require('worker_threads'); // ! is safe due to `null` check in `isWorkerThread`
- parentPort.postMessage([_types.PARENT_MESSAGE_CUSTOM, message]);
- } else if (typeof parentProcess.send === 'function') {
- parentProcess.send([_types.PARENT_MESSAGE_CUSTOM, message]);
- } else {
- throw new Error('"messageParent" can only be used inside a worker');
- }
- }
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