Error: It seems that the window object is not defined when trying to run Firebase analytics

Question

Error: It seems that the window object is not defined when trying to run Firebase analytics

Encountering the error

ReferenceError: window is not defined

when attempting to set up Firebase analytics in my Next.js project.

Below is the code snippet causing the issue:

const app = initializeApp(firebaseConfig);
const auth = getAuth(app);
let analytics;
if (window !== undefined) {
   analytics = getAnalytics(app);
}

onAuthStateChanged(auth, (user) => {
  if (user) {
    // User signed in
    const uid = user.uid;
    console.log(uid);
  } else {
    // User signed out.
  }
});

export { app, auth, analytics };

A solution for this problem was discussed in a previous thread; however, the suggested fix does not seem to be effective in my case.

javascript firebase next.js google-analytics

Answer 1

Answer №1

In the absence of window, determining its type is not possible.

Here's an alternative approach:

if (typeof window !== 'undefined') {

Answer 2

In the absence of window, determining its type is not possible.

Here's an alternative approach:

if (typeof window !== 'undefined') {

Error: It seems that the window object is not defined when trying to run Firebase analytics

Answer №1

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