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Diffstat (limited to 'node_modules/jest-util/build/createProcessObject.js')
-rw-r--r-- | node_modules/jest-util/build/createProcessObject.js | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/node_modules/jest-util/build/createProcessObject.js b/node_modules/jest-util/build/createProcessObject.js new file mode 100644 index 0000000..afc4894 --- /dev/null +++ b/node_modules/jest-util/build/createProcessObject.js @@ -0,0 +1,126 @@ +'use strict'; + +Object.defineProperty(exports, '__esModule', { + value: true +}); +exports.default = createProcessObject; + +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 createProcessObject() { + 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 = () => true; + + Object.defineProperty(newProcess, 'domain', { + get() { + return process.domain; + } + }); + return newProcess; +} |