| | |
| | | 'use strict'; |
| | | var $ = require('../internals/export'); |
| | | var IS_PURE = require('../internals/is-pure'); |
| | | var getBuiltIn = require('../internals/get-built-in'); |
| | | var call = require('../internals/function-call'); |
| | | var aCallable = require('../internals/a-callable'); |
| | | var isCallable = require('../internals/is-callable'); |
| | | var anObject = require('../internals/an-object'); |
| | |
| | | |
| | | // `Set.prototype.isSubsetOf` method |
| | | // https://tc39.github.io/proposal-set-methods/#Set.prototype.isSubsetOf |
| | | $({ target: 'Set', proto: true, real: true, forced: IS_PURE }, { |
| | | $({ target: 'Set', proto: true, real: true, forced: true }, { |
| | | isSubsetOf: function isSubsetOf(iterable) { |
| | | var iterator = getIterator(this); |
| | | var otherSet = anObject(iterable); |
| | |
| | | hasCheck = aCallable(otherSet.has); |
| | | } |
| | | return !iterate(iterator, function (value, stop) { |
| | | if (hasCheck.call(otherSet, value) === false) return stop(); |
| | | if (call(hasCheck, otherSet, value) === false) return stop(); |
| | | }, { IS_ITERATOR: true, INTERRUPTED: true }).stopped; |
| | | } |
| | | }); |