spolnik/JAlgoArena-UI

import * as types from '../../constants/ActionTypes';
import { User } from '../domain/User';
 
export interface AuthState {
  user: User | null;
  error: string | null;
  users: Array<User> | null;
}
 
interface AuthAction {
  type: string;
  user?: User;
  error?: string;
  users?: User[];
}
 
const defaultStartState: AuthState = {
  user: null,
  error: null,
  users: null,
};
 
Function `auth` has 35 lines of code (exceeds 25 allowed). Consider refactoring.
export function auth(state: AuthState = defaultStartState, action: AuthAction) {
  switch (action.type) {
    case types.LOGIN_SUCCESS:
      return {...state,
        user: action.user,
        error: null,
      };
 
    case types.LOGIN_FAIL:
    case types.SIGNUP_FAIL:
      return {...state,
        user: null,
        error: action.error,
      };
 
    case types.CHECKED_SESSION_STATUS:
      if (action.user && action.user.id) {
        return {...state,
          user: action.user,
          error: null,
        };
      }
      return defaultStartState;
    case types.LOGOUT_SUCCESS:
      return defaultStartState;
    case types.NAVIGATE_AWAY_FROM_AUTH_FORM:
    case types.SIGNUP_SUCCESS:
    case types.SIGNUP_REQUEST:
        return {...state,
        error: null,
      };
 
    case types.FETCH_USERS:
      return {...state,
        users: action.users,
      };
 
    default:
      return state;
  }
}