"firebaseError: Firebase: Firebase App named ' already exists (app/duplicate-app)." Code Answer's

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Firebase: Firebase App named '[DEFAULT]' already exists

By Unusual UnicornUnusual Unicorn on Sep 11, 2020 
if (!firebase.apps.length) {
    firebase.initializeApp({});
}

Source: github.com

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firebaseError: Firebase: Firebase App named '[DEFAULT'] already exists (app/duplicate-app).

By DayanaohhnanaDayanaohhnana on Nov 11, 2020 
// Config file
import * as firebase from "firebase";

const config = {...};

export default !firebase.apps.length ? firebase.initializeApp(config) : firebase.app();

// Other file
import firebase from '../firebase';
...
console.log(firebase.name);
console.log(firebase.database());

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