gree_leran/node_modules/jest-worker/build/workers/messageParent.js

39 lines
1.1 KiB
JavaScript

'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');
}
}