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							- 'use strict';
 
- var $ = require('../internals/export');
 
- var call = require('../internals/function-call');
 
- var aCallable = require('../internals/a-callable');
 
- var anObject = require('../internals/an-object');
 
- var getIteratorDirect = require('../internals/get-iterator-direct');
 
- var createIteratorProxy = require('../internals/iterator-create-proxy');
 
- var callWithSafeIterationClosing = require('../internals/call-with-safe-iteration-closing');
 
- var IS_PURE = require('../internals/is-pure');
 
- var IteratorProxy = createIteratorProxy(function () {
 
-   var iterator = this.iterator;
 
-   var predicate = this.predicate;
 
-   var next = this.next;
 
-   var result, done, value;
 
-   while (true) {
 
-     result = anObject(call(next, iterator));
 
-     done = this.done = !!result.done;
 
-     if (done) return;
 
-     value = result.value;
 
-     if (callWithSafeIterationClosing(iterator, predicate, [value, this.counter++], true)) return value;
 
-   }
 
- });
 
- // `Iterator.prototype.filter` method
 
- // https://github.com/tc39/proposal-iterator-helpers
 
- $({ target: 'Iterator', proto: true, real: true, forced: IS_PURE }, {
 
-   filter: function filter(predicate) {
 
-     anObject(this);
 
-     aCallable(predicate);
 
-     return new IteratorProxy(getIteratorDirect(this), {
 
-       predicate: predicate
 
-     });
 
-   }
 
- });
 
 
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