react-firebase-hooks/auth/dist/index.cjs.js.flow

React Hooks for Firebase

// @flow
import type { FirebaseUser as User } from 'firebase';
import type { Auth } from 'firebase/auth';
import typeof { Error as AuthError } from 'firebase/auth';

type LoadingHook<T> = [T | void, boolean, AuthError | void];

export type AuthStateHook = LoadingHook<User>;
declare export function useAuthState(auth: Auth): AuthStateHook;