VscodeCode snippets
VScode 配置 深拷贝 代码片段
日常进行深拷贝时我们会使用 JSON.parse(JSON.stringify(data)) 进行 copy 但是对象内有函数，或者是数据过于复杂非扁平化就会出现数据丢失的问题 使用下面这个可以应对绝大多数需要深拷贝的场景
{
"deepClone": {
"scope": "",
"prefix": "cloneArt",
"body": [
"const DEEP_CLONE = (_obj, _map = new WeakMap()) => {",
" if (_obj instanceof Date) return new Date(_obj)",
" if (_obj instanceof RegExp) return new RegExp(_obj)",
" if (_map.has(_obj)) return _map.get(_obj)",
" const _ALL_DESC = Object.getOwnPropertyDescriptors(_obj)",
" let _cloneObj = Object.create(Object.getPrototypeOf(_obj), _ALL_DESC)",
" _map.set(_obj, _cloneObj)",
" for (const _key of Reflect.ownKeys(_obj)) {",
" const _VALUE = _obj[_key]",
" const _JUDGMENT = _VALUE instanceof Object && typeof _VALUE !== 'function'",
" _cloneObj[_key] = _JUDGMENT ? DEEP_CLONE(_VALUE, _map) : _VALUE",
" }",
" return _cloneObj",
"}"
],
"description": "The ultimate deep copy data content!"
}
}