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First set of tests for Top Level Await

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Leo Balter 2019-08-02 17:14:24 -04:00 committed by Rick Waldron
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commit 56a2dba975
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4
features.txt
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@ -137,6 +137,10 @@ FinalizationGroup
# https://github.com/tc39/proposal-optional-chaining
optional-chaining
# Top Level Await
# https://github.com/tc39/proposal-top-level-await
top-level-await
## Standard language features
#
# Language features that have been included in a published version of the

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test/language/module-code/top-level-await/await-expr-func-expression.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
A function after top level await is an expression and not a hoistable declaration
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
ExpressionStatement[Yield, Await]:
[lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
Expression[+In, ?Yield, ?Await];
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module, async]
features: [top-level-await]
---*/
function fn() { return 1; }
function fn() { return 2; }
await function fn() { return 3; };
assert.sameValue(fn(), 2);
$DONE();

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test/language/module-code/top-level-await/await-expr-regexp.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Verify a RegularExpressionLiteral following an AwaitExpression is
not ambiguous to an Division
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module, async]
features: [top-level-await]
---*/
var lol = false;
var x = {
get y() {
lol = true;
}
};
var g = 42;
await /x.y/g;
if (lol) {
$DONE('It should be a RegExp');
} else {
$DONE();
}

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test/language/module-code/top-level-await/syntax/await-expr-array-literal.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression ArrayLiteral
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await [];

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test/language/module-code/top-level-await/syntax/await-expr-dyn-import.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression ImportCall
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
LeftHandSideExpression[Yield, Await]:
NewExpression[?Yield, ?Await]
CallExpression[?Yield, ?Await]
CallExpression[Yield, Await]:
ImportCall[?Yield, ?Await]
ImportCall[Yield, Await]:
import ( AssignmentExpression[+In, ?Yield, ?Await] )
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await, dynamic-import]
---*/
try {
await import('foo');
} catch (e) {
// Ignore errors, we are just checking if the syntax is valid and
// we should not worry if a module was loaded.
}

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test/language/module-code/top-level-await/syntax/await-expr-func-expression.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression StringLiteral
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
ExpressionStatement[Yield, Await]:
[lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
Expression[+In, ?Yield, ?Await];
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await function() {};

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test/language/module-code/top-level-await/syntax/await-expr-identifier.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression IdentifierReference
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
var foo = 1;
await foo;

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test/language/module-code/top-level-await/syntax/await-expr-literal-number.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression NumberLiteral
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await 1;

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test/language/module-code/top-level-await/syntax/await-expr-literal-string.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression StringLiteral
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await '';

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test/language/module-code/top-level-await/syntax/await-expr-nested.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
Nested AwaitExpressions
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
TryStatement[Yield, Await, Return]:
try Block[?Yield, ?Await, ?Return] Catch[?Yield, ?Await, ?Return]
try Block[?Yield, ?Await, ?Return] Finally[?Yield, ?Await, ?Return]
try Block[?Yield, ?Await, ?Return] Catch[?Yield, ?Await, ?Return] Finally[?Yield, ?Await, ?Return]
...
ExpressionStatement[Yield, Await]:
[lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
Expression[+In, ?Yield, ?Await];
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await await await await await await await await await await await await await await await 'await';

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test/language/module-code/top-level-await/syntax/await-expr-null.js Normal file
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@ -0,0 +1,41 @@
// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression NullLiteral
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await null;

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test/language/module-code/top-level-await/syntax/await-expr-obj-literal.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression ObjectLiteral
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
// This syntax helps avoiding the code being parsed as a Block
await { function() {} };
// Yes, it's a MethodDefinition...

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test/language/module-code/top-level-await/syntax/await-expr-regexp.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression RegularExpressionLiteral
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await /1/;

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test/language/module-code/top-level-await/syntax/await-expr-template-literal.js Normal file
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@ -0,0 +1,42 @@
// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression TemplateLiteral
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await ``;

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test/language/module-code/top-level-await/syntax/await-expr-this.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
AwaitExpression this
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
...
PrimaryExpression[Yield, Await]:
this
IdentifierReference[?Yield, ?Await]
Literal
ArrayLiteral[?Yield, ?Await]
ObjectLiteral[?Yield, ?Await]
FunctionExpression
ClassExpression[?Yield, ?Await]
GeneratorExpression
AsyncFunctionExpression
AsyncGeneratorExpression
RegularExpressionLiteral
TemplateLiteral[?Yield, ?Await, ~Tagged]
CoverParenthesizedExpressionAndArrowParameterList[?Yield, ?Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
await this;

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test/language/module-code/top-level-await/syntax/block-await-expr.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await. It propagates to the StatementList of a Block
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
StatementListItem[Yield, Await, Return]:
Statement[?Yield, ?Await, ?Return]
Declaration[?Yield, ?Await]
Statement[Yield, Await, Return]:
BlockStatement[?Yield, ?Await, ?Return]
BlockStatement[Yield, Await, Return]:
Block[?Yield, ?Await, ?Return]
Block[Yield, Await, Return]:
{ StatementList[?Yield, ?Await, ?Return]_opt }
...
ExpressionStatement[Yield, Await]:
[lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
Expression[+In, ?Yield, ?Await];
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
{
{
{
{
{
{
{
{
{
{
{
{
{
{
{
{
{
await {};
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}

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test/language/module-code/top-level-await/syntax/early-does-not-propagate-to-fn-declaration-body.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
The Await capability does not propagate to the body of a function declaration
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
StatementListItem[Yield, Await, Return]:
Statement[?Yield, ?Await, ?Return]
Declaration[?Yield, ?Await]
Declaration[Yield, Await]:
HoistableDeclaration[?Yield, ?Await, ~Default]
ClassDeclaration[?Yield, ?Await, ~Default]
LexicalDeclaration[+In, ?Yield, ?Await]
HoistableDeclaration[Yield, Await, Default]:
FunctionDeclaration[?Yield, ?Await, ?Default]
GeneratorDeclaration[?Yield, ?Await, ?Default]
AsyncFunctionDeclaration[?Yield, ?Await, ?Default]
AsyncGeneratorDeclaration[?Yield, ?Await, ?Default]
FunctionDeclaration[Yield, Await, Default]:
function BindingIdentifier[?Yield, ?Await] ( FormalParameters[~Yield, ~Await] ) { FunctionBody[~Yield, ~Await] }
negative:
phase: parse
type: SyntaxError
esid: prod-ModuleItem
flags: [module]
features: [top-level-await]
---*/
$DONOTEVALUATE();
function fn() { await 0; }

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test/language/module-code/top-level-await/syntax/early-does-not-propagate-to-fn-declaration-params.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
The Await capability does not propagate to the parameters of a function declaration
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
StatementListItem[Yield, Await, Return]:
Statement[?Yield, ?Await, ?Return]
Declaration[?Yield, ?Await]
Declaration[Yield, Await]:
HoistableDeclaration[?Yield, ?Await, ~Default]
ClassDeclaration[?Yield, ?Await, ~Default]
LexicalDeclaration[+In, ?Yield, ?Await]
HoistableDeclaration[Yield, Await, Default]:
FunctionDeclaration[?Yield, ?Await, ?Default]
GeneratorDeclaration[?Yield, ?Await, ?Default]
AsyncFunctionDeclaration[?Yield, ?Await, ?Default]
AsyncGeneratorDeclaration[?Yield, ?Await, ?Default]
FunctionDeclaration[Yield, Await, Default]:
function BindingIdentifier[?Yield, ?Await] ( FormalParameters[~Yield, ~Await] ) { FunctionBody[~Yield, ~Await] }
negative:
phase: parse
type: SyntaxError
esid: prod-ModuleItem
flags: [module]
features: [top-level-await]
---*/
$DONOTEVALUATE();
function fn(x = await 1) {
return x;
}

30
test/language/module-code/top-level-await/syntax/early-does-not-propagate-to-fn-expr-body.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
The Await capability does not propagate to the body of a function expression
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
StatementListItem[Yield, Await, Return]:
Statement[?Yield, ?Await, ?Return]
Declaration[?Yield, ?Await]
FunctionExpression:
function BindingIdentifier[~Yield, ~Await]_opt ( FormalParameters[~Yield, ~Await] )
{ FunctionBody[~Yield, ~Await] }
negative:
phase: parse
type: SyntaxError
esid: prod-ModuleItem
flags: [module]
features: [top-level-await]
---*/
$DONOTEVALUATE();
0, function () {
await 1;
};

30
test/language/module-code/top-level-await/syntax/early-does-not-propagate-to-fn-expr-params.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
The Await capability does not propagate to the parameters of a function expression
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
StatementListItem[Yield, Await, Return]:
Statement[?Yield, ?Await, ?Return]
Declaration[?Yield, ?Await]
FunctionExpression:
function BindingIdentifier[~Yield, ~Await]_opt ( FormalParameters[~Yield, ~Await] )
{ FunctionBody[~Yield, ~Await] }
negative:
phase: parse
type: SyntaxError
esid: prod-ModuleItem
flags: [module]
features: [top-level-await]
---*/
$DONOTEVALUATE();
0, function (x = await 1) {
return x;
};

25
test/language/module-code/top-level-await/syntax/early-no-escaped-await.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
The await keyword can't be escaped
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
negative:
phase: parse
type: SyntaxError
esid: prod-ModuleItem
flags: [module]
features: [top-level-await]
---*/
$DONOTEVALUATE();
\u0061wait 0;

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test/language/module-code/top-level-await/syntax/if-await-expr-boolean.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await.
IfStatement ( AwaitExpression BooleanLiteral )
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
IfStatement[Yield, Await, Return]:
if(Expression[+In, ?Yield, ?Await])Statement[?Yield, ?Await, ?Return]elseStatement[?Yield, ?Await, ?Return]
if(Expression[+In, ?Yield, ?Await])Statement[?Yield, ?Await, ?Return]
...
ExpressionStatement[Yield, Await]:
[lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
Expression[+In, ?Yield, ?Await];
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
if (await false) {};

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test/language/module-code/top-level-await/syntax/try-await-expr.js Normal file
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// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Valid syntax for top level await. It propagates to nested blocks
TryStatement with AwaitExpression
info: |
ModuleItem:
StatementListItem[~Yield, +Await, ~Return]
...
TryStatement[Yield, Await, Return]:
try Block[?Yield, ?Await, ?Return] Catch[?Yield, ?Await, ?Return]
try Block[?Yield, ?Await, ?Return] Finally[?Yield, ?Await, ?Return]
try Block[?Yield, ?Await, ?Return] Catch[?Yield, ?Await, ?Return] Finally[?Yield, ?Await, ?Return]
...
ExpressionStatement[Yield, Await]:
[lookahead ∉ { {, function, async [no LineTerminator here] function, class, let [ }]
Expression[+In, ?Yield, ?Await];
UnaryExpression[Yield, Await]
[+Await]AwaitExpression[?Yield]
AwaitExpression[Yield]:
await UnaryExpression[?Yield, +Await]
esid: prod-AwaitExpression
flags: [module]
features: [top-level-await]
---*/
try {
await 0;
} catch(e) {
await 1;
}
try {
await 0;
} finally {
await 1;
}
try {
await 0;
} catch(e) {
await 1;
} finally {
await 2;
}