mirror of
https://github.com/musix-org/musix-oss
synced 2024-11-10 11:20:19 +00:00
24 lines
917 B
JavaScript
24 lines
917 B
JavaScript
|
'use strict';
|
||
|
|
var $ = require('../internals/export');
|
||
|
|
var DESCRIPTORS = require('../internals/descriptors');
|
||
|
|
var FORCED = require('../internals/object-prototype-accessors-forced');
|
||
|
|
var toObject = require('../internals/to-object');
|
||
|
|
var toPrimitive = require('../internals/to-primitive');
|
||
|
|
var getPrototypeOf = require('../internals/object-get-prototype-of');
|
||
|
|
var getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;
|
||
|
|
|
||
|
|
// `Object.prototype.__lookupGetter__` method
|
||
|
|
// https://tc39.github.io/ecma262/#sec-object.prototype.__lookupGetter__
|
||
|
|
if (DESCRIPTORS) {
|
||
|
|
$({ target: 'Object', proto: true, forced: FORCED }, {
|
||
|
|
__lookupGetter__: function __lookupGetter__(P) {
|
||
|
|
var O = toObject(this);
|
||
|
|
var key = toPrimitive(P, true);
|
||
|
|
var desc;
|
||
|
|
do {
|
||
|
|
if (desc = getOwnPropertyDescriptor(O, key)) return desc.get;
|
||
|
|
} while (O = getPrototypeOf(O));
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|