Add lookahead restriction tests for "let [" in expression statement contexts

test/language/statements/do-while/let-array-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-do-while-statement
+description: >
+  ExpressionStatement has a lookahead restriction for `let [`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+negative:
+  phase: early
+  type: SyntaxError
+flags: [noStrict]
+---*/
+
+do let
+[x] = 0
+while (false);

test/language/statements/for-await-of/let-array-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement has a lookahead restriction for `let [`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+negative:
+  phase: early
+  type: SyntaxError
+flags: [noStrict]
+features: [async-iteration]
+---*/
+
+async function* f() {
+  for await (var x of []) let
+  [a] = 0;
+}

test/language/statements/for-await-of/let-block-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let {`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+features: [async-iteration]
+---*/
+
+async function* f() {
+  for await (var x of []) let // ASI
+  {}
+}

test/language/statements/for-await-of/let-identifier-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let <binding-identifier>`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+features: [async-iteration]
+---*/
+
+async function* f() {
+  for await (var x of []) let // ASI
+  x = 1;
+}

test/language/statements/for-in/let-array-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement has a lookahead restriction for `let [`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+negative:
+  phase: early
+  type: SyntaxError
+flags: [noStrict]
+---*/
+
+for (var x in null) let
+[a] = 0;

test/language/statements/for-in/let-block-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let {`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+for (var x in null) let // ASI
+{}

test/language/statements/for-in/let-identifier-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let <binding-identifier>`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+for (var x in null) let // ASI
+x = 1;

test/language/statements/for-of/let-array-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement has a lookahead restriction for `let [`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+negative:
+  phase: early
+  type: SyntaxError
+flags: [noStrict]
+---*/
+
+for (var x of []) let
+[a] = 0;

test/language/statements/for-of/let-block-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let {`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+for (var x of []) let // ASI
+{}

test/language/statements/for-of/let-identifier-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-in-and-for-of-statements
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let <binding-identifier>`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+for (var x of []) let // ASI
+x = 1;

test/language/statements/for/let-array-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-statement
+description: >
+  ExpressionStatement has a lookahead restriction for `let [`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+negative:
+  phase: early
+  type: SyntaxError
+flags: [noStrict]
+---*/
+
+for (; false; ) let
+[a] = 0;

test/language/statements/for/let-block-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-statement
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let {`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+for (; false; ) let // ASI
+{}

test/language/statements/for/let-identifier-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-for-statement
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let <binding-identifier>`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+for (; false; ) let // ASI
+x = 1;

test/language/statements/if/let-array-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-if-statement
+description: >
+  ExpressionStatement has a lookahead restriction for `let [`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+negative:
+  phase: early
+  type: SyntaxError
+flags: [noStrict]
+---*/
+
+if (false) let
+[a] = 0;

test/language/statements/if/let-block-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-if-statement
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let {`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+if (false) let // ASI
+{}

test/language/statements/if/let-identifier-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-if-statement
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let <binding-identifier>`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+if (false) let // ASI
+x = 1;

test/language/statements/labeled/let-array-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-labelled-statements
+description: >
+  ExpressionStatement has a lookahead restriction for `let [`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+negative:
+  phase: early
+  type: SyntaxError
+flags: [noStrict]
+---*/
+
+// Wrapped in an if-statement to avoid reference errors at runtime.
+if (false) {
+    L: let
+    [a] = 0;
+}

test/language/statements/labeled/let-block-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-labelled-statements
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let {`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+// Wrapped in an if-statement to avoid reference errors at runtime.
+if (false) {
+    L: let // ASI
+    {}
+}

test/language/statements/labeled/let-identifier-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-labelled-statements
+description: >
+  ExpressionStatement doesn't have a lookahead restriction for `let <binding-identifier>`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+flags: [noStrict]
+---*/
+
+// Wrapped in an if-statement to avoid reference errors at runtime.
+if (false) {
+    L: let // ASI
+    x = 1;
+}

test/language/statements/while/let-array-with-newline.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-while-statement
+description: >
+  ExpressionStatement has a lookahead restriction for `let [`.
+info: |
+  ExpressionStatement[Yield, Await] :
+    [lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
+    Expression[+In, ?Yield, ?Await] ;
+negative:
+  phase: early
+  type: SyntaxError
+flags: [noStrict]
+---*/
+
+while (false) let
+[a] = 0;