1 // Copyright 2016 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 function iterable(done) { 6 return { 7 [Symbol.iterator]: function() { 8 return { 9 next: function() { 10 if (done) return { done: true }; 11 done = true; 12 return { value: 42, done: false }; 13 } 14 } 15 } 16 } 17 } 18 19 var [...result] = iterable(true); 20 assertEquals([], result); 21 22 var [...result] = iterable(false); 23 assertEquals([42], result); 24
