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