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Last change
on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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File size:
750 bytes
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| [6a3a178] | 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 speciesConstructor = require('../internals/species-constructor');
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| 8 | var iterate = require('../internals/iterate');
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| 9 |
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| 10 | // `Set.prototype.union` method
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| 11 | // https://github.com/tc39/proposal-set-methods
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| 12 | $({ target: 'Set', proto: true, real: true, forced: IS_PURE }, {
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| 13 | union: function union(iterable) {
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| 14 | var set = anObject(this);
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| 15 | var newSet = new (speciesConstructor(set, getBuiltIn('Set')))(set);
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| 16 | iterate(iterable, aFunction(newSet.add), { that: newSet });
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| 17 | return newSet;
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| 18 | }
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| 19 | });
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