Data from function is of type unknown - functions v9

Issue

I have a cloud function that takes an email and returns the user info, including the uid.

The function is declared like this:

const getUserByEmail = httpsCallable(functions, 'getUserByEmail')
const user = await getUserByEmail({
    email: email,
})

But when I try to read "user.data.id" typescript yells at me because:

"Object is of type 'unknown'.ts(2571) (property)

HttpsCallableResult.data: unknown Data returned from callable function.

What am I missing?

edit: of course I tried "user: any" and TS is happy, but it's not a great solution.

Solution

httpsCallable needs type info.

httpsCallable<RequestData, ResponseData>

const getUserByEmail = httpsCallable<{email: string}, {
  user: {
    data: {
      id: string,
    }
  }
}>(functions, 'getUserByEmail');

const { data } = await getUserByEmail({
    email: email,
});

const userId = data.user.data.id;

Answered By - Isamu Arimoto