This project provides all postal codes of spain. It have mysql database with all the information, you only need to import it. The server have end-point's to get the information, you can read the tests to know how it works.
Use this command to install all dependencies.
This command start the server on development mode. So it will be start using nodemon. Sure that you have this dependency installed.
This command builds the project sources.
This command start the server on production mode. On this case it start using node js.