| 1 | 'use strict';
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| 2 | var $ = require('../internals/export');
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| 3 | var IS_PURE = require('../internals/is-pure');
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| 4 | var getBuiltIn = require('../internals/get-built-in');
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| 5 | var anObject = require('../internals/an-object');
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| 6 | var aFunction = require('../internals/a-function');
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| 7 | var bind = require('../internals/bind-context');
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| 8 | var speciesConstructor = require('../internals/species-constructor');
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| 9 | var getSetIterator = require('../internals/get-set-iterator');
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| 10 | var iterate = require('../internals/iterate');
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| 11 |
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| 12 |
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| 13 |
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| 14 | $({ target: 'Set', proto: true, real: true, forced: IS_PURE }, {
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| 15 | filter: function filter(callbackfn /* , thisArg */) {
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| 16 | var set = anObject(this);
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| 17 | var iterator = getSetIterator(set);
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| 18 | var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
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| 19 | var newSet = new (speciesConstructor(set, getBuiltIn('Set')))();
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| 20 | var adder = aFunction(newSet.add);
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| 21 | iterate(iterator, function (value) {
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| 22 | if (boundFunction(value, value, set)) adder.call(newSet, value);
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| 23 | }, undefined, false, true);
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| 24 | return newSet;
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| 25 | }
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| 26 | });
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