/**
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* 深度克隆
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* @param origin 源对象
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* @param target 产出对象 可空
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* @return {*|{}}
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*/
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export function deepClone(origin, target) {
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target = target || {}
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const toString = Object.prototype.toString
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for (const prop in origin) {
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if (origin.hasOwnProperty(prop)) {
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const value = origin[prop]
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if (typeof value === 'object') {
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const type = toString.call(value)
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switch (type) {
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case '[object Object]':
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target[prop] = {}
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deepClone(value, target[prop])
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break
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case '[object Array]':
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target[prop] = []
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deepClone(value, target[prop])
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break
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case '[object Null]':
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target[prop] = null
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break
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}
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} else {
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target[prop] = value
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}
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}
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}
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return target
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}
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