title: I'm working to complete redux with typescript. How can I adjust type what I want in these actions
body: <p>I just tried to use createStandardAction of typesafe-actions.
  I've understand it's able to set Action, type of payload. But I wanna set actionType in action like number, string, as well using createStandardAction. 
  How can I solve this problem.</p>
  
  <pre><code>import { createStandardAction } from 'typesafe-actions';
  import { handleActions } from 'redux-actions';
  import { produce } from 'immer';
  
  const COUNT = 'workers/COUNT';
  const INCREMENT = 'workers/INCREMENT';
  
  
  //workersActions.count'type is any
  //But I wanna this type is number. 
  export const workersActions = {
    count: createStandardAction(COUNT)&lt;number&gt;(),
    increment: createStandardAction(INCREMENT)&lt;void&gt;(),
  };
  
  type Increment = ReturnType&lt;typeof workersActions.increment&gt;;
  
  export type WorkerState = {
    count: number;
  };
  
  const initialState : WorkerState = {
    count : 0
  }
  const workers = handleActions&lt;WorkerState, any&gt;(
    {
      [INCREMENT]: (state, action: Increment) =&gt; {
        return produce(state, draft =&gt; {
          draft.count = action.payload + 1;
        });
      },
    },
    initialState,
  );
  </code></pre>