mirror of https://github.com/jkjoy/sunpeiwen.git
48 lines
1.1 KiB
TypeScript
48 lines
1.1 KiB
TypeScript
import { isBuffer } from './isBuffer';
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export const deepCopy = obj => {
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if (obj === null || typeof obj !== 'object') {
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return obj;
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}
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if (isBuffer(obj)) {
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return obj.slice();
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}
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const copy = Array.isArray(obj) ? [] : {};
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Object.keys(obj).forEach(key => {
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copy[key] = deepCopy(obj[key]);
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});
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return copy;
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};
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export const deepCopyWith = (obj: any, customizer?: (v: any, k: string, o: any) => any) => {
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function deepCopyWithHelper(value: any, innerKey: string, innerObject: any) {
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const result = customizer!(value, innerKey, innerObject);
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if (result !== undefined) return result;
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if (value === null || typeof value !== 'object') {
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return value;
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}
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if (isBuffer(value)) {
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return value.slice();
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}
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const copy = Array.isArray(value) ? [] : {};
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Object.keys(value).forEach(k => {
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copy[k] = deepCopyWithHelper(value[k], k, value);
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});
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return copy;
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}
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if (customizer) {
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return deepCopyWithHelper(obj, '', null);
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} else {
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return deepCopy(obj);
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}
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};
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