Search Terms

module namespace declaration rexporting

Suggestion

When trying to export types in an index.ts, currently one must redefine those types in the barrel.

e.g.

Consumer

import { myModule } from 'my-module' function foo(bar: myModule.MyClass) { }

MyModule

Currently developers must export their variables and export their types too, but types must be redeclared.

// my-module/index.ts import * as myClass from './my-class'; export const myModule = { ...myClass } export declare namespace myModule { export type MyClass<T> = myClass.MyClass<T> }

Suggestion

Would be nice if developers could just embed the type in the namespace

// my-module/index.ts import * as myClass from './my-class'; export const myModule = { ...myClass } export declare namespace myModule { export types from './my-class' }

Checklist

My suggestion meets these guidelines:

• This wouldn't be a breaking change in existing TypeScript/JavaScript code
• This wouldn't change the runtime behavior of existing JavaScript code
• This could be implemented without emitting different JS based on the types of the expressions
• This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
• This feature would agree with the rest of TypeScript's Design Goals.