Экспресс пример GRPC
example express grpc using typescript easy to understand, before starting using grpc, please read this article below
https://github.com/restuwahyu13/express-grpc-rest-api
what is grpc : https://bit.ly/3c892HO
what is protocol buffer: https://bit.ly/3qPTxZw
Restu Wahyu Saputra