1 // Copyright 2014 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 // Flags: --strong-mode 6 7 (function NoVar() { 8 assertThrows("'use strong'; var x = 0;", SyntaxError); 9 assertThrows("'use strong'; for(var i = 0; i < 10; ++i) { };", SyntaxError); 10 })(); 11 12 13 (function LetIsOkay() { 14 assertTrue(eval("'use strong'; let x = 0; x === 0;")); 15 assertTrue(eval("'use strong'; for(let i = 0; i < 10; ++i) { } 0 === 0;")); 16 })(); 17 18 19 (function ConstIsOkay() { 20 assertTrue(eval("'use strong'; const x = 0; x === 0;")); 21 assertTrue(eval("'use strong'; for(const i = 0; false;) { } 0 === 0;")); 22 })(); 23
