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NestJS
Core details
Title
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Description
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NestJS is a progressive Node.js framework for building efficient, scalable server-side apps using TypeScript, inspired by Angular with modules, decorators, and DI. It supports GraphQL, WebSockets, and microservices.
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Usage & Trade-offs
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When to use it
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Use NestJS when: - Structuring large Express/Fastify apps. - Leveraging TypeScript for enterprise. - Building microservices or APIs. - Needing testing and validation built-in.
Pros
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- Opinionated structure for maintainability. - Decorators for clean code. - CLI for scaffolding. - Guards, pipes, interceptors. - Hybrid app support.
Cons
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- Heavier than plain Express. - Angular-like learning curve. - Boilerplate for small projects. - Community growing but smaller. - Migration from vanilla JS.
Notes
Note: Use @Module for organization. Pipes for DTO validation. e2e tests with supertest.
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