[Firebase] Review Firebase API

∙ Firebase

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• How to use Firebase ?

• Firebase api document

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• app

  • initializeApp(<firebaseConfig>)

• auth

  • getAuth(<App>)

  • getFirestore(<App>)

  • getStorage(<App>)

  • signInWithPopup(auth, provider, resolver)

  • GoogleAuthProvider

  • GithubAuthProvider()

  • createUserWithEmailAndPassword(auth, email, password)

  • signInWithEmailAndPassword()

  • onAuthStateChanged

  • updateProfile

• firestore

  • doc

  • collection

  • addDoc

  • deleteDoc

  • updateDoc

• fireStorage

  • ref

  • getDownloadURL

  • uploadString

  • deleteObject