[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 getIterator = require('../internals/get-iterator');
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| 8 | var iterate = require('../internals/iterate');
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| 9 |
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| 10 | // `Set.prototype.isSubsetOf` method
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| 11 | // https://tc39.github.io/proposal-set-methods/#Set.prototype.isSubsetOf
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| 12 | $({ target: 'Set', proto: true, real: true, forced: IS_PURE }, {
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| 13 | isSubsetOf: function isSubsetOf(iterable) {
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| 14 | var iterator = getIterator(this);
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| 15 | var otherSet = anObject(iterable);
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| 16 | var hasCheck = otherSet.has;
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| 17 | if (typeof hasCheck != 'function') {
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| 18 | otherSet = new (getBuiltIn('Set'))(iterable);
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| 19 | hasCheck = aFunction(otherSet.has);
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| 20 | }
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| 21 | return !iterate(iterator, function (value, stop) {
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| 22 | if (hasCheck.call(otherSet, value) === false) return stop();
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| 23 | }, { IS_ITERATOR: true, INTERRUPTED: true }).stopped;
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| 24 | }
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| 25 | });
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