vue hello world项目
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

32 lines
1.0 KiB

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