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author | Joel Kronqvist <joel.h.kronqvist@gmail.com> | 2022-03-05 19:02:27 +0200 |
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committer | Joel Kronqvist <joel.h.kronqvist@gmail.com> | 2022-03-05 19:02:27 +0200 |
commit | 5d309ff52cd399a6b71968a6b9a70c8ac0b98981 (patch) | |
tree | 360f7eb50f956e2367ef38fa1fc6ac7ac5258042 /node_modules/jest-util/build/deepCyclicCopy.js | |
parent | b500a50f1b97d93c98b36ed9a980f8188d648147 (diff) | |
download | LYLLRuoka-5d309ff52cd399a6b71968a6b9a70c8ac0b98981.tar.gz LYLLRuoka-5d309ff52cd399a6b71968a6b9a70c8ac0b98981.zip |
Added node_modules for the updating to work properly.
Diffstat (limited to 'node_modules/jest-util/build/deepCyclicCopy.js')
-rw-r--r-- | node_modules/jest-util/build/deepCyclicCopy.js | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/node_modules/jest-util/build/deepCyclicCopy.js b/node_modules/jest-util/build/deepCyclicCopy.js new file mode 100644 index 0000000..e76e34b --- /dev/null +++ b/node_modules/jest-util/build/deepCyclicCopy.js @@ -0,0 +1,84 @@ +'use strict'; + +Object.defineProperty(exports, '__esModule', { + value: true +}); +exports.default = deepCyclicCopy; + +/** + * 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 EMPTY = new Set(); + +function deepCyclicCopy( + value, + options = { + blacklist: EMPTY, + keepPrototype: false + }, + cycles = new WeakMap() +) { + if (typeof value !== 'object' || value === null) { + return value; + } else if (cycles.has(value)) { + return cycles.get(value); + } else if (Array.isArray(value)) { + return deepCyclicCopyArray(value, options, cycles); + } else { + return deepCyclicCopyObject(value, options, cycles); + } +} + +function deepCyclicCopyObject(object, options, cycles) { + const newObject = options.keepPrototype + ? Object.create(Object.getPrototypeOf(object)) + : {}; + const descriptors = Object.getOwnPropertyDescriptors(object); + cycles.set(object, newObject); + Object.keys(descriptors).forEach(key => { + if (options.blacklist && options.blacklist.has(key)) { + delete descriptors[key]; + return; + } + + const descriptor = descriptors[key]; + + if (typeof descriptor.value !== 'undefined') { + descriptor.value = deepCyclicCopy( + descriptor.value, + { + blacklist: EMPTY, + keepPrototype: options.keepPrototype + }, + cycles + ); + } + + descriptor.configurable = true; + }); + return Object.defineProperties(newObject, descriptors); +} + +function deepCyclicCopyArray(array, options, cycles) { + const newArray = options.keepPrototype + ? new (Object.getPrototypeOf(array).constructor)(array.length) + : []; + const length = array.length; + cycles.set(array, newArray); + + for (let i = 0; i < length; i++) { + newArray[i] = deepCyclicCopy( + array[i], + { + blacklist: EMPTY, + keepPrototype: options.keepPrototype + }, + cycles + ); + } + + return newArray; +} |