redux-thunk.d.ts

// https://github.com/reduxjs/redux-thunk/issues/333
import 'redux';

declare module 'redux' {
  /**
   * Overload for bindActionCreators redux function, returns expects responses
   * from thunk actions
   */
  function bindActionCreators<ActionCreators extends ActionCreatorsMapObject<any>>(
    actionCreators: ActionCreators,
    dispatch: Dispatch,
  ): {
    [ActionCreatorName in keyof ActionCreators]: ReturnType<
      ActionCreators[ActionCreatorName]
    > extends ThunkAction<any, any, any, any>
      ? (
          ...args: Parameters<ActionCreators[ActionCreatorName]>
        ) => ReturnType<ReturnType<ActionCreators[ActionCreatorName]>>
      : ActionCreators[ActionCreatorName];
  };

  /*
   * Overload to add thunk support to Redux's dispatch() function.
   * Useful for react-redux or any other library which could use this type.
   */
  export interface Dispatch<A extends Action = AnyAction> {
    <ReturnType = any, State = any, ExtraThunkArg = any>(
      thunkAction: ThunkAction<ReturnType, State, ExtraThunkArg, A>,
    ): ReturnType;
  }
}