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.
26 lines
1.1 KiB
26 lines
1.1 KiB
'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; |
|
} |
|
});
|
|
|