Course: "NestJS: The Complete Developer's Guide" by Stephen Grider.

App goal: Quick project to understand modules and Dependency Injection (DI). Also includes how to share services between different modules.

Command for generating modules:

nest g module module-name-here

Command for generating services (with service test files):

nest g service service-name-here

Command for generating controller (with controller test files):

nest g controller controller-name-here

• The first module: Add the service to the module's list of exports.
• Import the above first module into the new module (i.e. add it to the import list of the new module).
• Define the constructor method in the service of the new module and add (inject) the first module's service into it.