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'use strict';
Object.defineProperty(exports, '__esModule', { value: true }); exports.default = deepCyclicCopyReplaceable;
var _prettyFormat = require('pretty-format');
/** * 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 builtInObject = [ Array, Buffer, Date, Float32Array, Float64Array, Int16Array, Int32Array, Int8Array, Map, Set, RegExp, Uint16Array, Uint32Array, Uint8Array, Uint8ClampedArray ];
const isBuiltInObject = object => builtInObject.includes(object.constructor);
const isMap = value => value.constructor === Map;
function deepCyclicCopyReplaceable(value, 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, cycles); } else if (isMap(value)) { return deepCyclicCopyMap(value, cycles); } else if (isBuiltInObject(value)) { return value; } else if (_prettyFormat.plugins.DOMElement.test(value)) { return value.cloneNode(true); } else { return deepCyclicCopyObject(value, cycles); } }
function deepCyclicCopyObject(object, cycles) { const newObject = Object.create(Object.getPrototypeOf(object)); const descriptors = Object.getOwnPropertyDescriptors(object); cycles.set(object, newObject); const newDescriptors = [ ...Object.keys(descriptors), ...Object.getOwnPropertySymbols(descriptors) ].reduce( //@ts-expect-error because typescript do not support symbol key in object
//https://github.com/microsoft/TypeScript/issues/1863
(newDescriptors, key) => { const enumerable = descriptors[key].enumerable; newDescriptors[key] = { configurable: true, enumerable, value: deepCyclicCopyReplaceable( // this accesses the value or getter, depending. We just care about the value anyways, and this allows us to not mess with accessors
// it has the side effect of invoking the getter here though, rather than copying it over
object[key], cycles ), writable: true }; return newDescriptors; }, {} ); //@ts-expect-error because typescript do not support symbol key in object
//https://github.com/microsoft/TypeScript/issues/1863
return Object.defineProperties(newObject, newDescriptors); }
function deepCyclicCopyArray(array, cycles) { const newArray = new (Object.getPrototypeOf(array).constructor)(array.length); const length = array.length; cycles.set(array, newArray);
for (let i = 0; i < length; i++) { newArray[i] = deepCyclicCopyReplaceable(array[i], cycles); }
return newArray; }
function deepCyclicCopyMap(map, cycles) { const newMap = new Map(); cycles.set(map, newMap); map.forEach((value, key) => { newMap.set(key, deepCyclicCopyReplaceable(value, cycles)); }); return newMap; }
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