Better typing for TokenTypeHint union type

[markovd18]

I see the intention of the interface

export type TokenTypeHint = 'access_token' | 'refresh_token' | string;

being typed with | string to enable to pass any arbitrary value as a type hint. However, this results in an incorrect autocomplete by the TS LSP as shown in the image below:

My proposal would be to instead type the union like this:

export type TokenTypeHint = 'access_token' | 'refresh_token' | (string & object);

This tricks the language server to make a proper type inference and actually provide useful code completion without actually breaking anything: