vue hello world项目
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.
 
 
 

49 lines
1023 B

'use strict';
/**
* Module dependenices
*/
const clone = require('shallow-clone');
const typeOf = require('kind-of');
const isPlainObject = require('is-plain-object');
function cloneDeep(val, instanceClone) {
switch (typeOf(val)) {
case 'object':
return cloneObjectDeep(val, instanceClone);
case 'array':
return cloneArrayDeep(val, instanceClone);
default: {
return clone(val);
}
}
}
function cloneObjectDeep(val, instanceClone) {
if (typeof instanceClone === 'function') {
return instanceClone(val);
}
if (instanceClone || isPlainObject(val)) {
const res = new val.constructor();
for (let key in val) {
res[key] = cloneDeep(val[key], instanceClone);
}
return res;
}
return val;
}
function cloneArrayDeep(val, instanceClone) {
const res = new val.constructor(val.length);
for (let i = 0; i < val.length; i++) {
res[i] = cloneDeep(val[i], instanceClone);
}
return res;
}
/**
* Expose `cloneDeep`
*/
module.exports = cloneDeep;