| | 'use strict'; |
| |
|
| | var callBind = require('call-bind-apply-helpers'); |
| | var gOPD = require('gopd'); |
| |
|
| | var hasProtoAccessor; |
| | try { |
| | |
| | hasProtoAccessor = ([]).__proto__ === Array.prototype; |
| | } catch (e) { |
| | if (!e || typeof e !== 'object' || !('code' in e) || e.code !== 'ERR_PROTO_ACCESS') { |
| | throw e; |
| | } |
| | } |
| |
|
| | |
| | var desc = !!hasProtoAccessor && gOPD && gOPD(Object.prototype, ('__proto__')); |
| |
|
| | var $Object = Object; |
| | var $getPrototypeOf = $Object.getPrototypeOf; |
| |
|
| | |
| | module.exports = desc && typeof desc.get === 'function' |
| | ? callBind([desc.get]) |
| | : typeof $getPrototypeOf === 'function' |
| | ? function getDunder(value) { |
| | |
| | return $getPrototypeOf(value == null ? value : $Object(value)); |
| | } |
| | : false; |
| |
|