Microsoft/TypeScript
Ver no GitHubEmmited Type Declarations generate empty export
Open
#51.338 aberto em 28 de out. de 2022
BugDomain: Declaration EmitHelp Wanted
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Description
Bug Report
When generating type declaration files if a type that is only used inside the typescript code however it is not exported results in an empty export at the end of the file e.g. export {};
🔎 Search Terms
- declaration empty export
- declaration "export {}"
🕗 Version & Regression Information
When i started inspecting the generated typescript declarations generated.
I see the same error/behaviour when either typescript@4.8 and typescript@next
This is the behavior in every version I tried, and I reviewed the FAQ for entries about emmited code and private fields and methods.
⏯ Playground Link
- When some of the types are not exported this happens playground example here
- When all of the types are exported there is no empty export playground example here
💻 Code
Empty Export Code
type TaskType = 'ONE' | 'TWO' | 'THREE';
// would not expected to have an empty export
// in the emitted type declaration code here is this correct?
export interface Task {
executeTask(type:TaskType):void;
}
No Empty Export
// no empty export since all types and interfaces exported
export type TaskType = 'ONE' | 'TWO' | 'THREE';
export interface Task {
executeTask(type:TaskType):void;
}
🙁 Actual behavior
Empty export for some reason…
🙂 Expected behavior
No default empty export.