我如何更改 Firebase 中的错误消息？ 例如，当输入无效密码时？

Question

How can i change the error message? I would like to find a way to customise this error message

This is my sign in method

signInWithEmailAndPassword(auth, email, password)
  .then((res) => {
    dispatch({ type: “LOGIN”, payload: res.user });
    setIsPending(false);
  })
  .catch((err) => {
    setError(err.message);
  });

Answer 1

There is no way to change the error message that Firebase returns, but you can check the error code and then show you own message based on that.

signInWithEmailAndPassword(auth, email, password)
  .then((res) => {
    dispatch({ type: “LOGIN”, payload: res.user });
  })
  .catch((err) => {
    if (err.code === "auth/") {
      setError("The password you entered does not match to this user.");
    }
    else {
      setError(err.message);
    }
  })
  .finally(() => {
    setIsPending(false);
  });

See the full list of error codes to learn what you might want to handle.