mirror of
https://github.com/musix-org/musix-oss
synced 2024-12-24 01:43:18 +00:00
17 lines
640 B
JavaScript
17 lines
640 B
JavaScript
|
'use strict';
|
||
|
|
var $ = require('../internals/export');
|
||
|
|
var IS_PURE = require('../internals/is-pure');
|
||
|
|
var anObject = require('../internals/an-object');
|
||
|
|
var getMapIterator = require('../internals/get-map-iterator');
|
||
|
|
var iterate = require('../internals/iterate');
|
||
|
|
|
||
|
|
// `Map.prototype.includes` method
|
||
|
|
// https://github.com/tc39/proposal-collection-methods
|
||
|
|
$({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {
|
||
|
|
keyOf: function keyOf(searchElement) {
|
||
|
|
return iterate(getMapIterator(anObject(this)), function (key, value) {
|
||
|
|
if (value === searchElement) return iterate.stop(key);
|
||
|
|
}, undefined, true, true).result;
|
||
|
|
}
|
||
|
|
});
|