You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
1.1 KiB
27 lines
1.1 KiB
2 years ago
|
'use strict';
|
||
|
|
var $ = require('../internals/export');
|
||
|
|
var getBuiltIn = require('../internals/get-built-in');
|
||
|
|
var bind = require('../internals/function-bind-context');
|
||
|
|
var call = require('../internals/function-call');
|
||
|
|
var aCallable = require('../internals/a-callable');
|
||
|
|
var anObject = require('../internals/an-object');
|
||
|
|
var speciesConstructor = require('../internals/species-constructor');
|
||
|
|
var getSetIterator = require('../internals/get-set-iterator');
|
||
|
|
var iterate = require('../internals/iterate');
|
||
|
|
|
||
|
|
// `Set.prototype.map` method
|
||
|
|
// https://github.com/tc39/proposal-collection-methods
|
||
|
|
$({ target: 'Set', proto: true, real: true, forced: true }, {
|
||
|
|
map: function map(callbackfn /* , thisArg */) {
|
||
|
|
var set = anObject(this);
|
||
|
|
var iterator = getSetIterator(set);
|
||
|
|
var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined);
|
||
|
|
var newSet = new (speciesConstructor(set, getBuiltIn('Set')))();
|
||
|
|
var adder = aCallable(newSet.add);
|
||
|
|
iterate(iterator, function (value) {
|
||
|
|
call(adder, newSet, boundFunction(value, value, set));
|
||
|
|
}, { IS_ITERATOR: true });
|
||
|
|
return newSet;
|
||
|
|
}
|
||
|
|
});
|