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1 // Copyright 2015 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: --harmony-sloppy --harmony-sloppy-let --harmony-destructuring-bind | |
6 | |
7 // let is usable as a variable with var or legacy const, not let or ES6 const | |
8 | |
9 (function (){ | |
10 assertEquals(undefined, let); | |
11 | |
12 var let; | |
13 | |
14 let = 5; | |
15 assertEquals(5, let); | |
16 | |
17 (function() { var let = 1; assertEquals(1, let); })(); | |
18 assertEquals(5, let); | |
19 })(); | |
20 | |
21 assertThrows(function() { return let; }, ReferenceError); | |
22 | |
23 (function() { | |
24 var let, sum = 0; | |
25 for (let in [1, 2, 3, 4]) sum += Number(let); | |
26 assertEquals(6, sum); | |
27 | |
28 (function() { for (var let of [4, 5]) sum += let; })(); | |
29 assertEquals(15, sum); | |
30 | |
31 (function() { for (var let in [6]) sum += Number([6][let]); })(); | |
32 assertEquals(21, sum); | |
33 | |
34 for (let = 7; let < 8; let++) sum += let; | |
35 assertEquals(28, sum); | |
36 assertEquals(8, let); | |
37 | |
38 (function() { for (var let = 8; let < 9; let++) sum += let; })(); | |
39 assertEquals(36, sum); | |
40 assertEquals(8, let); | |
41 })(); | |
42 | |
43 assertThrows(function() { return let; }, ReferenceError); | |
44 | |
45 (function () { | |
46 let obj = {}; | |
47 var {let} = {let() { return obj; }}; | |
48 let().x = 1; | |
49 assertEquals(1, obj.x); | |
50 })(); | |
51 | |
52 (function () { | |
53 let obj = {}; | |
54 const [let] = [function() { return obj; }]; | |
55 let().x = 1; | |
56 assertEquals(1, obj.x); | |
57 })(); | |
58 | |
59 (function() { | |
60 function let() { | |
61 return 1; | |
62 } | |
63 assertEquals(1, let()); | |
64 })() | |
65 | |
66 assertThrows('for (let of []) {}', SyntaxError); | |
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