paulbreslin

const provider = new firebase.auth.GoogleAuthProvider();
firebase.auth().signInWithPopup(provider).then(function(result) {
    const user = result.user;
});

paulbreslin

firebase.database.ref(`users/${userId}`).set({
  user,
  email,
  profile_picture: imageUrl
});

paulbreslin

const starCountRef = firebase.database().ref(`posts/${postId}/${starCount}`);
starCountRef.on('value', snapshot => {
  updateStarCount(postElement, snapshot.val());
});

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const wordsReference = firebase.database().ref(`words/${uid}`);
wordsReference.on('value', snapshot => {
  // Callback runs whenever data changes
});

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const wordsReference = firebase.database().ref(`words/${uid}`);
wordsReference.once('value', snapshot => {
  // Callback only runs once
});

paulbreslin

firebase.auth().onAuthStateChanged( user => {
    if (user) {
        // If user state changes and 'user' exists, check Firebase Database for user
        const userReference = db.ref(`users/${user.uid}`);
        userReference.once('value', snapshot => {
            if (!snapshot.val()) {
                // User does not exist, create user entry
                userReference.set({
                    email: user.email,
                    displayName: user.displayName

paulbreslin

const authObserver = firebase.auth().onAuthStateChanged( user => {
  if (user) {
    // Handle user data

    // Unsubscribe from observer
    authObserver();
  }
});

paulbreslin

const express = require('express');

const router = express.Router();

router.get('/', (req, res) => {
  const {limit} = req.query;
}

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const express = require('express');
const helmet = require('helmet');
 
const app = express();
 
app.use(helmet());

paulbreslin

fetch('https://example.com/api/v1/example-resource')
  .then( response => {
    // data retrived
    // log success
  })
  .catch( error => {
    // handle error
  });