javascript - I cannot get data from firebase database

Question

I am new to firebase. I'm trying to retreive data from a real time database using a node.js server sending associated credentials to firebase, but something gets broken after once('value') is called: its returned promise never gets resolved and server stops itself logging this message: "Process exited with code 3221226505".

I wrote the following code:

async function testFirebase1(firebaseCredentialsObj, path) {
  let firebase = require('firebase')
  firebase.initializeApp(firebaseCredentialsObj);
  var database = firebase.database();
  var ref = database.ref(path);
  console.log(ref.toString());
  try {

    // Attempt 1 
    var prom = await ref.once('value'); 
    const data = prom.;
    console.log('data ' + data)

    // Attempt 2
    prom.then((snapshot) => {
      console.log('snapshot ' + snapshot)
    }).catch((error) => { console.log(error)} )

  } catch (error) {
    console.log(error)
  }
}

No error ever gets catched. I also tried to get data as an admin, but i got the same failing result

async function testFirebase3(firebaseCredentials, serviceAccountKey, databaseURL, path) {
  const admin=require('firebase-admin');
  const serviceAccount = serviceAccountKey;
  admin.initializeApp({
    credential: admin.credential.cert(serviceAccount),
    databaseURL: databaseURL
    });
    var db=admin.database();
    var userRef=db.ref(path);    
    const prom = await userRef.once('value');
    console.log(prom)
}

Promise returned from once() method keep beeing pendent. This is its log:

[[PromiseStatus]]:'pending' [[PromiseValue]]:undefined

Server is supposed to get databases'data in json format and send it to the client. Why is this happening?

question from:https://stackoverflow.com/questions/65872359/i-cannot-get-data-from-firebase-database

Answer 1

Waitting for answers