Firebase Authentication

초기화

• https://firebase.google.com/docs/reference/js/auth.md#initializeauth

아래 코드는 Next.js에서 Firebase Authentication을 사용하기 위한 초기화 코드입니다.

import { getApp, getApps, initializeApp } from "firebase/app";
import {
	browserLocalPersistence,
	browserPopupRedirectResolver,
	debugErrorMap,
	initializeAuth,
	prodErrorMap,
} from "firebase/auth";

const firebaseConfig = {
	apiKey: process.env.NEXT_PUBLIC_FIREBASE_API_KEY,
	authDomain: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN,
	projectId: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID,
	storageBucket: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET,
	messagingSenderId: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
	appId: process.env.NEXT_PUBLIC_FIREBASE_APP_ID,
};

const app = !getApps().length ? initializeApp(firebaseConfig) : getApp();

// initializeAuth는 getAuth에서 호출하는 로우레벨 API입니다.
export const auth = initializeAuth(app, {
	errorMap: process.env.NODE_ENV === "development" ? debugErrorMap : prodErrorMap,
	persistence: browserLocalPersistence,
	popupRedirectResolver: browserPopupRedirectResolver,
});

export * from "firebase/auth";