createReducer.js

// Wrap every object before passing to createReducer

export default function createReducer(initialState: ?{}, handlers: {}) {
  return function reducer(state: ?{} = initialState, action: {type: string, payload: Object}) {
    return typeof handlers[action.type] === 'function'
        ? handlers[action.type](state, action)
        : state;
  };
}