Get snapshot values and save it in an array on firebase typescript

Ionic Framework ionic-v3
1

I have here a snapshot where it gets the value from my firebase.

Declared Array:

stylesArray: number[];

firebase:

key1: 10
key2: 11
key3: 10
key4: 11
key5: 13
key6: 12
key7: 10

snapshot:

this.style.subscribe(snapshots => {
      snapshots.forEach(snapshot => {
        this.stylesArray = snapshot.val();
this.stylesArray[0] = snapshot.val();
         console.log(snapshot.key)
         console.log(snapshot.val())
       });
     })
console.log(this.stylesArray[0]); // Expected Output should be 10 from Key 1

Where am I doing it wrong?