Create a testnet Hedera Portal account here.
Create a file named .env in your project root.
Add, ignoring the < > and without any quotation marks:
OPERATOR_ID=<YOUR_OPERATOR_ID> #your account id
OPERATOR_KEY=<YOUR_PRIVATE_KEY> #your testnet private key (can be ECDSA, ED25519 or DER)
NETWORK=testnetFor example:
OPERATOR_ID=0.0.1000000
OPERATOR_KEY=123456789
NETWORK=testnetWe have added .env to .gitignore to help ensure its never committed.