I'm getting an argument mismatch on the signInWithProvider function, expected 4, received 2.
I'm using the v3 branch.

The Java code expects 4 arguments (3 + callback/promise).

But the JS code sends an object as first argument.

The link function seems to be correctly updated:

Changing the code to this seems to work:

signInWithCredential(credential: any): Promise<Object> {
  return promisify('signInWithProvider', FirestackAuth)(credential.provider, credential.token, credential.secret);
}