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'use strict';
// https://github.com/tc39/proposal-iterator-helpers
var $ = require('../internals/export');
var anObject = require('../internals/an-object');
var toPositiveInteger = require('../internals/to-positive-integer');
var createIteratorProxy = require('../internals/iterator-create-proxy');
var IteratorProxy = createIteratorProxy(function (arg) {
var iterator = this.iterator;
var next = this.next;
var result, done;
while (this.remaining) {
this.remaining--;
result = anObject(next.call(iterator));
done = this.done = !!result.done;
if (done) return;
}
result = anObject(next.call(iterator, arg));
done = this.done = !!result.done;
if (!done) return result.value;
});
$({ target: 'Iterator', proto: true, real: true }, {
drop: function drop(limit) {
return new IteratorProxy({
iterator: anObject(this),
remaining: toPositiveInteger(limit)
});
}
});
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