Javascript

export function injectAsyncReducer(store, isValid) {
  return function injectReducer(name, asyncReducer) {
    if (!isValid) checkStore(store);

    invariant(
      isString(name) && !isEmpty(name) && isFunction(asyncReducer),
      '(app/utils...) injectAsyncReducer: Expected `asyncReducer` to be a reducer function'
    );

    if (Reflect.has(store.asyncReducers, name)) return;

    store.asyncReducers[name] = asyncReducer; // eslint-disable-line no-param-reassign
    store.replaceReducer(createReducer(store.asyncReducers));
  };
}