Invalid TypeScript Declarations for property named `constructor` and other javascript keywords

Given this gleam code:

pub type Box {
  Box(constructor: Int)
}

And this gleam.toml:

name = "app"
version = "1.0.0"

target = "javascript"

[dependencies]
gleam_stdlib = ">= 0.44.0 and < 2.0.0"

[dev_dependencies]
gleeunit = ">= 1.0.0 and < 2.0.0"

[javascript]
typescript_declarations = true

The generated typescript declarations are invalid with the following error:

Similarly when you use other property names such as prototype or then, the generated typescript declarations are valid, however do not match the generated JavaScript classes.

For example:

pub type Box {
  Box(prototype: Int)
}

export class Box extends $CustomType {
  constructor(prototype) {
    super();
    this.prototype$ = prototype;
  }
}

export class Box extends _.CustomType {
  /** @deprecated */
  constructor(prototype: number);
  /** @deprecated */
  prototype: number;
}

Here the typescript autocompletion would suggest box.prototype even though it should be box.prototype$.

Maybe this is not important, because they are deprecated, but wanted to bring it up anyways.

This is on gleam 1.15.4