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 |
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11 |
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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) {
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22 | if (hasCheck.call(otherSet, value) === false) return iterate.stop();
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23 | }, undefined, false, true).stopped;
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24 | }
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25 | });
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