Thunkify

Thunkify.ts

// tslint:disable: no-any
export type Thunkify<
  Actions extends { [key: string]: (...args: any) => any }
> = {
  [actionKey in keyof Actions]: ReturnType<Actions[actionKey]> extends ((
    ...args: any
  ) => Promise<any>)
    ?
        | ((
            ...args: Parameters<Actions[actionKey]>
          ) => ReturnType<ReturnType<Actions[actionKey]>>)
        | Actions[actionKey]
    : Actions[actionKey]
};
// tslint:enable: no-any