npm installexport SUMUP_API_KEY="your_api_key"
export SUMUP_MERCHANT_CODE="your_merchant_code"npm startcurl -X POST http://localhost:8080/readers \
-H "Content-Type: application/json" \
-d '{"pairing_code":"12345678","name":"Front Desk"}'curl http://localhost:8080/readerscurl -X POST http://localhost:8080/readers/READER_ID/checkout \
-H "Content-Type: application/json" \
-d '{"amount": 10.0}'