Alias example not working. Actions must be plain objects. Use custom middleware for async actions.

[GhazanfarKhan]

Hi,

I am dispatching alias from content script given in example docs. I got following error.

Actions must be plain objects. Use custom middleware for async actions.

I have used thunk also in proxy store and from there I dispatched it. I checked code in background script, this function throwing error after webpack build. Action is coming undefined.

function dispatch(action) {
    if (!isPlainObject(action)) {
      throw new Error('Actions must be plain objects. ' + 'Use custom middleware for async actions.');
    }

    if (typeof action.type === 'undefined') {
      throw new Error('Actions may not have an undefined "type" property. ' + 'Have you misspelled a constant?');
    }

    if (isDispatching) {
      throw new Error('Reducers may not dispatch actions.');
    }

    try {
      isDispatching = true;
      currentState = currentReducer(currentState, action);
    } finally {
      isDispatching = false;
    }

    var listeners = currentListeners = nextListeners;

    for (var i = 0; i < listeners.length; i++) {
      var listener = listeners[i];
      listener();
    }

    return action;
  }

[GhazanfarKhan]

I was not return from alias. I provide a return statement with some dispatch.

[jasan-s]

Getting the same error as well