You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
108 lines
3.0 KiB
108 lines
3.0 KiB
'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;
|
|
}
|