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'TypeError: comment.map no es una función' con la base de datos en tiempo real de firebase

Escribí este código para recibir todos los comentarios de la base de datos y luego imprimirlos uno por uno en la consola. El código es:

 import { getDatabase, ref, child, get, } from "https://www.gstatic.com/firebasejs/9.8.0/firebase-database.js"; const dbRef = ref(getDatabase()); get(child(dbRef, `comentarios/`)) .then((snapshot) => { if (snapshot.exists()) { //Get an array of objects var coment = snapshot.val(); console.log(coment) //Transforms array of objects into normal array const commentsExtracted = coment.map((coment) => { return coment.coment; }); //Print the comments to the console for (let i = 0; i < commentsExtracted.length; i++) { if ( commentsExtracted[i] != undefined || commentsExtracted[i] == "" ) { console.log(commentsExtracted[i]); } } } else { console.log("No data available"); } }) .catch((error) => { console.error(error); });

el error que se muestra en la consola es:

comentarios.js:37 TypeError: comment.map no es una función

about 4 years ago · Juan Pablo Isaza
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