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39 lines
852 B
39 lines
852 B
3 years ago
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function deepCopy(obj, parent = null) {
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let result
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let _parent = parent
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while (_parent) {
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if (_parent.originalParent === obj) {
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return _parent.currentParent
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}
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_parent = _parent.parent
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}
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if (obj && typeof(obj) === 'object') {
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if (obj instanceof RegExp) {
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result = new RegExp(obj.source, obj.flags)
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} else if (obj instanceof Date) {
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result = new Date(obj.getTime())
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} else {
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if (obj instanceof Array) {
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result = []
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} else {
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let proto = Object.getPrototypeOf(obj)
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result = Object.create(proto)
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}
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for (let i in obj) {
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if (obj[i] && typeof(obj[i]) === 'object') {
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result[i] = deepCopy(obj[i], {
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originalParent: obj,
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currentParent: result,
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parent: parent
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})
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} else {
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result[i] = obj[i]
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}
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}
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}
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} else {
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return obj
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}
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return result
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}
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export default deepCopy
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