Feathers v4 upgrade declarations file missing #1738

What is the problem?

When I try to upgrade feathers v3 to feathers v4 it creates a new file named authentication.ts
in this file it requires the following file:

import { Application } from '../../declarations';

Which does not exist
So i tried a clean install of feathers v4
In there, it has a declarations.d.ts file, which is missing from the v3 to v4 application.

How did I try to solve it?

I copied declarations.d.ts file from an new feathers v4 application to an old feathers v3 moved to v4 application.
I changed

import { Application } from '../../declarations';

Into

import { Application } from './declarations';

declare module './declarations' {
  interface ServiceTypes {
    'authentication': AuthenticationService & ServiceAddons<any>;
  }
}

What happends?

Why does it happen

This is the compiled authentication.js file, on line 2 it already writes to exports while line 13 also tries that