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Prohibit ASI between 'let' and 'yield'/'await'

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Inspired by https://github.com/tc39/test262/pull/956
This commit is contained in:
Daniel Ehrenberg 2017-04-11 22:31:35 +02:00
parent 6fe9488ec7
commit dbfca4581d
2 changed files with 43 additions and 0 deletions
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22
test/language/statements/let/syntax/let-newline-yield-in-generator-function.js Normal file
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// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
author: Jeff Walden <jwalden+code@mit.edu>
esid: sec-let-and-const-declarations
description: >
`let await` does not permit ASI in between, as `await` is a BindingIdentifier
info: >
`await` is a perfectly cromulent binding name in any context grammatically, just
prohibited by static semantics in some contexts. Therefore ASI can never apply
between `let` (where a LexicalDeclaration is permitted) and `await`,
so a subsequent `0` where `=` was expected is a syntax error.
negative:
phase: early
type: SyntaxError
---*/
async function f() {
let
await 0;
}

21
test/language/statements/let/syntax/let-newline-yield-in-normal-function.js Normal file
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// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-let-and-const-declarations
description: >
`let yield` does not permit ASI in between, as `yield` is a BindingIdentifier
info: >
`yield` is a perfectly cromulent binding name in any context grammatically, just
prohibited by static semantics in some contexts. Therefore ASI can never apply
between `let` (where a LexicalDeclaration is permitted) and `yield`,
so a subsequent `0` where `=` was expected is a syntax error.
negative:
phase: early
type: SyntaxError
---*/
function f() {
let
yield 0;
}