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