I have a file where I have written all the firebase related functions, including this one here

function CurrentUser(){
console.log("auth", auth)
return auth.currentUser }

When I log auth.currentUser inside the function above, I can see details of currently logged in user but when I call this function on React homepage, I see it being undefined. Also I could see the homepage logs as expected if I make any changes like adding let i=1 in the above function. Wasn't able to figure out what's going on here. Any help would be appreciated.

Code for the call. This is to be on the homepage.

const Home() = () =>{
let userName = Firebase.CurrentUser();
console.log("userName", userName);
}

Output for when I log in to the app:

Output when I add something like a new variable to any of the above functions: