There is a part in the middle that shows migration from express to nestjs, but it is not easy to follow this part for someone who has not taken the existing lecture. There is also the DB table creation and a webpack error that suddenly appears... I think you should make a lecture for people who have not taken the express lecture...

musaepal

Let's learn NestJS, which is called the Spring of Node.js, and experience the convenience of Dependency Injection. Let's learn everything from API development, comparison with Express, deployment, and testing.

zerocho

Slack Clone Coding [Backend with NestJS + TypeORM]

All the solutions are written in the notice. You could have left even a simple question.

입문

초급

중급이상

네스트JS

NestJS

TypeORM

익스프레스

Express

노드js

Node.js

Designing APIs

Using TypeORM

Building a Full-Fledged Slack Backend

Testing