Hello World API - Nestjs Typing CST Test
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Hello World API — Nestjs Code
A basic NestJS REST API returning 'Hello World'.
import { Controller, Get } from '@nestjs/common';
import { Module } from '@nestjs/common';
import { NestFactory } from '@nestjs/core';
@Controller()
class AppController {
@Get() hello() { return { message: 'Hello World' }; }
}
@Module({ controllers: [AppController] })
class AppModule {}
async function bootstrap() {
const app = await NestFactory.create(AppModule);
await app.listen(3000);
}
bootstrap();Nestjs Language Guide
NestJS is a progressive Node.js framework for building efficient, scalable, and maintainable server-side applications using TypeScript and modern JavaScript.
Primary Use Cases
- ▸Building RESTful APIs and GraphQL services
- ▸Creating microservices with built-in support
- ▸Developing server-side applications with TypeScript
- ▸Implementing real-time WebSocket applications
- ▸Building enterprise-grade backend systems
Notable Features
- ▸TypeScript-first design
- ▸Modular architecture
- ▸Dependency Injection container
- ▸Support for REST, GraphQL, WebSockets, and microservices
- ▸Built-in testing and CLI tools
Origin & Creator
NestJS was created by Kamil Myśliwiec in 2017 to provide a structured framework for building maintainable Node.js server-side applications with TypeScript.
Industrial Note
NestJS is popular in enterprise backend ecosystems and microservice architectures, providing scalable, modular, and maintainable server-side solutions.