2 // https://github.com/tc39/proposal-iterator-helpers
3 var $ = require('../internals/export');
4 var iterate = require('../internals/iterate');
5 var aFunction = require('../internals/a-function');
6 var anObject = require('../internals/an-object');
8 $({ target: 'Iterator', proto: true, real: true }, {
9 every: function every(fn) {
12 return !iterate(this, function (value) {
13 if (!fn(value)) return iterate.stop();
14 }, undefined, false, true).stopped;