function checkStore (store) {
  const shape = {
    dispatch: isFunction,
    subscribe: isFunction,
    getState: isFunction,
    replaceReducer: isFunction,
    runSaga: isFunction,
    asyncReducers: isObject
  }
  invariant(
    conformsTo(store, shape),
    '(app/utils...) asyncInjectors: Expected a valid redux store'
  )
}
Validate the shape of redux store