122 lines
3.2 KiB
JavaScript
122 lines
3.2 KiB
JavaScript
'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 = _default;
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var _deepCyclicCopy = _interopRequireDefault(require('./deepCyclicCopy'));
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function _interopRequireDefault(obj) {
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return obj && obj.__esModule ? obj : {default: obj};
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}
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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 BLACKLIST = new Set(['env', 'mainModule', '_events']);
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const isWin32 = process.platform === 'win32';
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const proto = Object.getPrototypeOf(process.env); // The "process.env" object has a bunch of particularities: first, it does not
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// directly extend from Object; second, it converts any assigned value to a
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// string; and third, it is case-insensitive in Windows. We use a proxy here to
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// mimic it (see https://nodejs.org/api/process.html#process_process_env).
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function createProcessEnv() {
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const real = Object.create(proto);
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const lookup = {};
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function deletePropertyWin32(_target, key) {
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for (const name in real) {
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if (real.hasOwnProperty(name)) {
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if (typeof key === 'string') {
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if (name.toLowerCase() === key.toLowerCase()) {
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delete real[name];
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delete lookup[name.toLowerCase()];
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}
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} else {
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if (key === name) {
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delete real[name];
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delete lookup[name];
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}
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}
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}
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}
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return true;
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}
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function deleteProperty(_target, key) {
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delete real[key];
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delete lookup[key];
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return true;
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}
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function getProperty(_target, key) {
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return real[key];
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}
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function getPropertyWin32(_target, key) {
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if (typeof key === 'string') {
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return lookup[key in proto ? key : key.toLowerCase()];
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} else {
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return real[key];
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}
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}
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const proxy = new Proxy(real, {
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deleteProperty: isWin32 ? deletePropertyWin32 : deleteProperty,
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get: isWin32 ? getPropertyWin32 : getProperty,
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set(_target, key, value) {
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const strValue = '' + value;
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if (typeof key === 'string') {
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lookup[key.toLowerCase()] = strValue;
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}
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real[key] = strValue;
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return true;
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}
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});
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return Object.assign(proxy, process.env);
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}
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function _default() {
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const process = require('process');
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const newProcess = (0, _deepCyclicCopy.default)(process, {
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blacklist: BLACKLIST,
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keepPrototype: true
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});
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try {
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// This fails on Node 12, but it's already set to 'process'
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newProcess[Symbol.toStringTag] = 'process';
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} catch (e) {
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// Make sure it's actually set instead of potentially ignoring errors
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if (newProcess[Symbol.toStringTag] !== 'process') {
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e.message =
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'Unable to set toStringTag on process. Please open up an issue at https://github.com/facebook/jest\n\n' +
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e.message;
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throw e;
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}
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} // Sequentially execute all constructors over the object.
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let proto = process;
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while ((proto = Object.getPrototypeOf(proto))) {
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if (typeof proto.constructor === 'function') {
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proto.constructor.call(newProcess);
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}
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}
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newProcess.env = createProcessEnv();
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newProcess.send = () => {};
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return newProcess;
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}
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