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NestJS

You've been writing Express apps like it's 2014 - routes scattered across files , callbacks nested so deep they have their own ecosystem , zero structure when your app outgrows app.js with 2000 lines of undocumented suffering. NestJS walks in with TypeScript-first , decorator-heavy , dependency-injected architecture that forces you to write maintainable code whether you like it or not. Controllers , providers , modules - the framework won't let you import random functions from utils/ like a degenerate

16 files covering NestJS from installation to production , with the security insight that structured backends produce fewer vulnerabilities because there are fewer paths where developers forget to check something

what you'll find here

  • Architecture Foundations - Intro , installation , controllers , providers , modules
  • Middleware Pipeline - Middleware , guards , interceptors , pipes , exception filters
  • Security & Auth - Authentication strategies , guards in depth , security hardening patterns
  • Data & Testing - Database integration with TypeORM/Prisma , testing with Jest
  • Deployment - Production builds , Docker , deployment strategies

prerequisites

Basic Node.js , some TypeScript , Express basics. NestJS assumes you've felt the pain of unorganized Express apps

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