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Fixed an issue with top-level for-await loops not being allowed with --module preserve (#59042)

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Mateusz Burzyński 2024-06-26 21:40:07 +02:00 committed by GitHub
parent 15f67e0b48
commit c8f2405456
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7 changed files with 94 additions and 0 deletions
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1
src/compiler/checker.ts
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@ -51097,6 +51097,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
// fallthrough
case ModuleKind.ES2022:
case ModuleKind.ESNext:
case ModuleKind.Preserve:
case ModuleKind.System:
if (languageVersion >= ScriptTarget.ES2017) {
break;

14
tests/baselines/reference/modulePreserveTopLevelAwait1(target=es2016).errors.txt Normal file
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@ -0,0 +1,14 @@
modulePreserveTopLevelAwait1.ts(1,5): error TS1432: Top-level 'for await' loops are only allowed when the 'module' option is set to 'es2022', 'esnext', 'system', 'node16', 'nodenext', or 'preserve', and the 'target' option is set to 'es2017' or higher.
modulePreserveTopLevelAwait1.ts(2,1): error TS1378: Top-level 'await' expressions are only allowed when the 'module' option is set to 'es2022', 'esnext', 'system', 'node16', 'nodenext', or 'preserve', and the 'target' option is set to 'es2017' or higher.
==== modulePreserveTopLevelAwait1.ts (2 errors) ====
for await (const x of []) {}
~~~~~
!!! error TS1432: Top-level 'for await' loops are only allowed when the 'module' option is set to 'es2022', 'esnext', 'system', 'node16', 'nodenext', or 'preserve', and the 'target' option is set to 'es2017' or higher.
await Promise.resolve();
~~~~~
!!! error TS1378: Top-level 'await' expressions are only allowed when the 'module' option is set to 'es2022', 'esnext', 'system', 'node16', 'nodenext', or 'preserve', and the 'target' option is set to 'es2017' or higher.
export {};

13
tests/baselines/reference/modulePreserveTopLevelAwait1(target=es2016).symbols Normal file
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@ -0,0 +1,13 @@
//// [tests/cases/compiler/modulePreserveTopLevelAwait1.ts] ////
=== modulePreserveTopLevelAwait1.ts ===
for await (const x of []) {}
>x : Symbol(x, Decl(modulePreserveTopLevelAwait1.ts, 0, 16))
await Promise.resolve();
>Promise.resolve : Symbol(PromiseConstructor.resolve, Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --))
>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
>resolve : Symbol(PromiseConstructor.resolve, Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --))
export {};

23
tests/baselines/reference/modulePreserveTopLevelAwait1(target=es2016).types Normal file
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@ -0,0 +1,23 @@
//// [tests/cases/compiler/modulePreserveTopLevelAwait1.ts] ////
=== modulePreserveTopLevelAwait1.ts ===
for await (const x of []) {}
>x : any
> : ^^^
>[] : undefined[]
> : ^^^^^^^^^^^
await Promise.resolve();
>await Promise.resolve() : void
> : ^^^^
>Promise.resolve() : Promise<void>
> : ^^^^^^^^^^^^^
>Promise.resolve : { (): Promise<void>; <T>(value: T): Promise<Awaited<T>>; <T>(value: T | PromiseLike<T>): Promise<Awaited<T>>; }
> : ^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^ ^^ ^^^ ^^^
>Promise : PromiseConstructor
> : ^^^^^^^^^^^^^^^^^^
>resolve : { (): Promise<void>; <T>(value: T): Promise<Awaited<T>>; <T>(value: T | PromiseLike<T>): Promise<Awaited<T>>; }
> : ^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^ ^^ ^^^ ^^^
export {};

13
tests/baselines/reference/modulePreserveTopLevelAwait1(target=esnext).symbols Normal file
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@ -0,0 +1,13 @@
//// [tests/cases/compiler/modulePreserveTopLevelAwait1.ts] ////
=== modulePreserveTopLevelAwait1.ts ===
for await (const x of []) {}
>x : Symbol(x, Decl(modulePreserveTopLevelAwait1.ts, 0, 16))
await Promise.resolve();
>Promise.resolve : Symbol(PromiseConstructor.resolve, Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --))
>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
>resolve : Symbol(PromiseConstructor.resolve, Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --))
export {};

22
tests/baselines/reference/modulePreserveTopLevelAwait1(target=esnext).types Normal file
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@ -0,0 +1,22 @@
//// [tests/cases/compiler/modulePreserveTopLevelAwait1.ts] ////
=== modulePreserveTopLevelAwait1.ts ===
for await (const x of []) {}
>x : any
>[] : undefined[]
> : ^^^^^^^^^^^
await Promise.resolve();
>await Promise.resolve() : void
> : ^^^^
>Promise.resolve() : Promise<void>
> : ^^^^^^^^^^^^^
>Promise.resolve : { (): Promise<void>; <T>(value: T): Promise<Awaited<T>>; <T>(value: T | PromiseLike<T>): Promise<Awaited<T>>; }
> : ^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^ ^^ ^^^ ^^^
>Promise : PromiseConstructor
> : ^^^^^^^^^^^^^^^^^^
>resolve : { (): Promise<void>; <T>(value: T): Promise<Awaited<T>>; <T>(value: T | PromiseLike<T>): Promise<Awaited<T>>; }
> : ^^^^^^ ^^^ ^^ ^^ ^^^ ^^^ ^^ ^^ ^^^ ^^^
export {};

8
tests/cases/compiler/modulePreserveTopLevelAwait1.ts Normal file
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@ -0,0 +1,8 @@
// @module: preserve
// @target: es2016, esnext
// @noEmit: true
for await (const x of []) {}
await Promise.resolve();
export {};