TypeScript/tests/baselines/reference/isolatedModulesReExportType.types
Andrew Branch 8610ff5ebe
Add --preserveValueImports (#44619)
* Add compiler option

* Require es2015+

* Do not elide any imports or exports in preserve-exact

* Add errors for writing imports/exports that reference elided names

* Improve diagnostics wording

* Update API baselines

* Redo as noEraslingImportedNames

* Update option category

* Update baselines

* Lint

* Fix up transformer comments

* Fix errors from merge

* Update other error code baseline

* Rename to "preserveValueImports"

* Clean up, reword diagnostics

* Update API baselines

* Update other baseline affected by error message reword

* Update tsconfig baselines

* Add debug assertion instead of !
2021-09-08 16:30:22 -07:00

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=== /user.ts ===
// Error, can't re-export something that's only a type.
export { T } from "./exportT";
>T : any
export import T2 = require("./exportEqualsT");
>T2 : any
// OK, has a value side
export { C } from "./exportValue";
>C : typeof CC
// OK, even though the namespace it exports is only types.
import * as NS from "./exportT";
>NS : typeof NS
export { NS };
>NS : typeof NS
// OK, syntactically clear that a type is being re-exported.
export type T3 = T;
>T3 : number
// Error, not clear (to an isolated module) whether `T4` is a type.
import { T } from "./exportT";
>T : any
export { T as T4 };
>T : any
>T4 : any
// Ok, type-only import indicates that the export can be elided.
import type { T as TT } from "./exportT";
>T : any
>TT : number
export { TT };
>TT : any
// Error, type-only declaration is in a different file.
import { C as CC } from "./reExportValueAsTypeOnly";
>C : typeof CC
>CC : typeof CC
export { CC };
>CC : typeof CC
=== /exportT.ts ===
export type T = number;
>T : number
=== /exportValue.ts ===
export class C {}
>C : C
=== /exportEqualsT.ts ===
declare type T = number;
>T : number
export = T;
>T : number
=== /reExportValueAsTypeOnly.ts ===
export type { C } from "./exportValue";
>C : import("/exportValue").C