24 lines
496 B
JavaScript
Executable file
24 lines
496 B
JavaScript
Executable file
'use strict'
|
|
|
|
module.exports = clone
|
|
|
|
var getPrototypeOf = Object.getPrototypeOf || function (obj) {
|
|
return obj.__proto__
|
|
}
|
|
|
|
function clone (obj) {
|
|
if (obj === null || typeof obj !== 'object')
|
|
return obj
|
|
|
|
if (obj instanceof Object)
|
|
var copy = { __proto__: getPrototypeOf(obj) }
|
|
else
|
|
var copy = Object.create(null)
|
|
|
|
Object.getOwnPropertyNames(obj).forEach(function (key) {
|
|
Object.defineProperty(copy, key, Object.getOwnPropertyDescriptor(obj, key))
|
|
})
|
|
|
|
return copy
|
|
}
|