React Redux - Action creator (prototype)

index.ts

/* Prototype
- Trying to make return type of Creators include the property TYPE
*/

function createActions<T>(obj: T) {
  const keys = Object.keys(obj);
  return {
    Creators: keys.reduce((creators, key) => {
      creators[key] = (...args) => ({ type: key, ...obj[key](...args) });
      return creators;
    }, {}) as typeof obj,
    Types: keys.reduce((types, key) => { types[key] = key; return types; }, {}) as { [key in keyof T]: string },
  };
}

interface Action {
  type?: string;
}
interface LoginAction extends Action {
  username: string;
  password: string;
}
const { Creators, Types } = createActions({
  login: (login: LoginAction) => ({ ...login }),
  reset: () => undefined,
});

const loginAction = Creators.login({ username: 'brunolm', password: '123' });
const resetAction = Creators.reset();

console.log(loginAction);
console.log(resetAction);
console.log('Types.login', Types.login);