Backend · Technology in use
NestJS
A Node.js framework for modular, typed APIs.
The problem it solves
A Node.js framework for modular, typed APIs.
Technical rationale
NestJS adds structure when an API needs modules, validation, authentication, and clear adapters. In 2 Free I keep it at the edge: controllers coordinate transport while use cases retain product rules.
How I have used it
It composes the 2 Free financial and identity API.