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