How to resolve TypeError: Cannot convert undefined or null to object

Question

I\'ve written a couple of functions that effectively replicate JSON.stringify(), converting a range of values into stringified versions. When I port my code over to JSBin an

Answer 1

I solved the same problem in a React Native project. I solved it using this.

let data = snapshot.val();
if(data){
  let items = Object.values(data);
}
else{
  //return null
}