Function dispatchMiddleware

packages/react-async/src/reducer.ts:120–127

(
  dispatch: (action: AsyncAction<T>, ...args: any[]) => void
)

}

export const dispatchMiddleware = <T>(
  dispatch: (action: AsyncAction<T>, ...args: any[]) => void
) => (action: AsyncAction<T>, ...args: unknown[]) => {
  dispatch(action, ...args)
  if (action.type === ActionTypes.start && typeof action.payload === "function") {
    action.payload()
  }
}