Go to https://www.infura.io/ and get a free api key.
Place the API KEY in index.ts in the variable called INFURA_API_KEY insted of ADD_YOUR_API_KEY_HERE
(This is just for simplicity, you should have your SECRET KEYS in a .env file)
Run npm install
Run npm run start
The line:
console.log("This should return an object: ", existingEns);
should return an object containing several fields. It returns undefined