如何更改mapStateToProps以使用显式返回

Question

我有这个mapStateToProps，我想要打印一个console.log(user.isLogged)，但是我需要更改它以使用显式返回而不是隐式返回。我怎么才能改变这个？

const mapStateToProps = ({ user, retrospectives }) => (
  {
    userData: user.userData,
    isLogged: user.isLogged,
    organizations: user.organizations,
    retroFinished: retrospectives.retrospective.finished,
    linkToRetro: retrospectives.joinedRetro,
  }
);

Answer 1

用花括号代替父母。

还可以使用return语句。

const mapStateToProps = ({ user, retrospectives }) => {
    return {
      userData: user.userData,
      isLogged: user.isLogged,
      organizations: user.organizations,
      retroFinished: retrospectives.retrospective.finished,
      linkToRetro: retrospectives.joinedRetro,
    }
  };

Answer 2

不要使用()，而是使用{}和一个返回语句

const mapStateToProps = ({ user, retrospectives }) => {
  console.log(user);
  return {
    userData: user.userData,
    isLogged: user.isLogged,
    organizations: user.organizations,
    retroFinished: retrospectives.retrospective.finished,
    linkToRetro: retrospectives.joinedRetro,
  }
};

Answer 3

const mapStateToProps = ({ user, retrospectives }) => console.log(user.isLogged) || ({
    userData: user.userData,
    isLogged: user.isLogged,
    organizations: user.organizations,
    retroFinished: retrospectives.retrospective.finished,
    linkToRetro: retrospectives.joinedRetro,
  });