Simple Counter API - Nestjs Typing CST Test

Simple Counter API — Nestjs Code

Demonstrates a simple NestJS REST API with a counter using a service and controller.

import { Controller, Get, Post } from '@nestjs/common';
import { Module } from '@nestjs/common';
import { NestFactory } from '@nestjs/core';

class CounterService {
	private count = 0;
	getCount() { return this.count; }
	increment() { this.count++; return this.count; }
	decrement() { this.count--; return this.count; }
	reset() { this.count = 0; return this.count; }
}

@Controller('counter')
class CounterController {
	constructor(private readonly service: CounterService) {}
	@Get() getCount() { return { count: this.service.getCount() }; }
	@Post('increment') increment() { return { count: this.service.increment() }; }
	@Post('decrement') decrement() { return { count: this.service.decrement() }; }
	@Post('reset') reset() { return { count: this.service.reset() }; }
}

@Module({ controllers: [CounterController], providers: [CounterService] })
class AppModule {}

async function bootstrap() {
	const app = await NestFactory.create(AppModule);
	await app.listen(3000);
	console.log('NestJS server running on http://localhost:3000');
}
bootstrap();

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