Typescript enum definitions are not used in function signatures

[Vlad-Shcherbina]

To reproduce

1. Run wasm-bindgen --target web on the wasm generated from the following library:

   use wasm_bindgen::prelude::*;
   
   #[wasm_bindgen]
   pub enum Hand {
       Left = 0,
       Righ = 1,
   }
   
   #[wasm_bindgen]
   pub fn f(h: Hand) -> Hand { h }

2. Inspect generated .d.ts

Expected result

export enum Hand {
  Left,
  Righ,
}

export function f(h: Hand): Hand;

Actual result

export enum Hand {
  Left,
  Righ,
}

export function f(h: number): number;

Version info

wasm-bindgen 0.2.62

[alexcrichton]

I unfortunately don't have the time to implement a new feature like this, but a PR would be much appreciated!

[ChristianIvicevic]

I unfortunately don't have the time to implement a new feature like this, but a PR would be much appreciated!

The requested feature is really nice to have but the PR opened 3.5 years ago is stale. What are the chances that you pick up the work on this feature? Sadly I can't personally contribute myself.

[daxpedda]

I'm not aware of any current maintainer wanting to implement this.
But I'm happy to review a potential PR.

[ChristianIvicevic]

@daxpedda I just opened a PR that is ready to be reviewed :)