JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://www.gstatic.com/firebasejs/3.2.0/firebase.js"></script>

JavaScript

var config = {
		      apiKey: "AIzaSyAJ98oCuFOzoxpL82dvlqup8HAc5_SJpxI",
		      authDomain: "fir-tests-4fb47.firebaseapp.com",
		      databaseURL: "https://fir-tests-4fb47.firebaseio.com",
		      storageBucket: "",
		  };

		  firebase.initializeApp(config);

		  var counter = 0;

		  console.time('firebase answered in');
		  firebase.database().ref('texts').once('value',onData);

		  function onData(snapshot){
		    console.timeEnd('firebase answered in');

		    counter ++;
		    if(counter > 20) return;

		    setTimeout(function(){
		      console.time('firebase answered in');
		      firebase.database().ref('texts').once('value',onData);
		    },2000);
		  }