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135 lines
3.5 KiB
JavaScript

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