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perf[utils.js]: Add code comments to deepClone and remove redundant code

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Pan 2018-06-19 11:26:46 +08:00
parent cbee7b6f20
commit 3f479664b6
1 changed files with 5 additions and 1 deletions
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6
src/utils/index.js
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@ -246,6 +246,11 @@ export function debounce(func, wait, immediate) {
}
}
/**
* This is just a simple version of deep copy
* Has a lot of edge cases bug
* If you want to use a perfect deep copy, use lodash's _.cloneDeep
*/
export function deepClone(source) {
if (!source && typeof source !== 'object') {
throw new Error('error arguments', 'shallowClone')
@ -253,7 +258,6 @@ export function deepClone(source) {
const targetObj = source.constructor === Array ? [] : {}
Object.keys(source).forEach((keys) => {
if (source[keys] && typeof source[keys] === 'object') {
targetObj[keys] = source[keys].constructor === Array ? [] : {}
targetObj[keys] = deepClone(source[keys])
} else {
targetObj[keys] = source[keys]