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45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
// Copyright (C) 2019 Leo Balter. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: >
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Valid syntax for top level await.
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AwaitExpression ImportCall
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info: |
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ModuleItem:
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StatementListItem[~Yield, +Await, ~Return]
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...
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UnaryExpression[Yield, Await]
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[+Await]AwaitExpression[?Yield]
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AwaitExpression[Yield]:
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await UnaryExpression[?Yield, +Await]
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...
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TryStatement[Yield, Await, Return]:
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try Block[?Yield, ?Await, ?Return] Catch[?Yield, ?Await, ?Return]
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try Block[?Yield, ?Await, ?Return] Finally[?Yield, ?Await, ?Return]
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try Block[?Yield, ?Await, ?Return] Catch[?Yield, ?Await, ?Return] Finally[?Yield, ?Await, ?Return]
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Catch[Yield, Await, Return]:
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catch(CatchParameter[?Yield, ?Await])Block[?Yield, ?Await, ?Return]
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catchBlock[?Yield, ?Await, ?Return]
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Finally[Yield, Await, Return]:
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finallyBlock[?Yield, ?Await, ?Return]
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CatchParameter[Yield, Await]:
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BindingIdentifier[?Yield, ?Await]
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BindingPattern[?Yield, ?Await]
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esid: prod-AwaitExpression
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flags: [module]
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features: [top-level-await, dynamic-import]
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---*/
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try {} catch ({ x = await 42 }) {} // Initializer
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try {} catch ({ x: y = await 42 }) {} // BindingElement Initializer
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try {} catch ([ x = await 42 ]) {}
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