create-nestjs-middleware-module

import { Module, NestModule, MiddlewareConsumer, INestApplication } from '@nestjs/common'; import { NestFactory } from '@nestjs/core'; import { Request, Response, NextFunction } from 'express'; import { createModule, FacadeModuleStaticOptional } from 'create-nestjs-middleware-module'; // 1. Define your middleware factory and its options interface LoggerMiddlewareOptions { prefix?: string; } function createCustomLoggerMiddleware(options?: LoggerMiddlewareOptions) { const prefix = options?.prefix || 'APP'; return (req: Request, res: Response, next: NextFunction) => { console.log(`[${prefix}] Request: ${req.method} ${req.url}`); next(); }; } // 2. Create your NestJS module using createModule export const CustomLoggerModule = createModule<LoggerMiddlewareOptions>( createCustomLoggerMiddleware ) as FacadeModuleStaticOptional<LoggerMiddlewareOptions>; // 3. Use the module in your main application @Module({ imports: [ // Example: Configure with options CustomLoggerModule.forRoot({ prefix: 'API', forRoutes: ['/data*'] // Apply to routes starting with /data }), // Example: Use without options (requires FacadeModuleStaticOptional assertion) CustomLoggerModule.forRoot(), // Apply to all routes by default ], controllers: [], providers: [], }) class AppModule implements NestModule { configure(consumer: MiddlewareConsumer) { // Additional NestJS native middleware configuration if needed // For instance, if you want to exclude specific paths from the CustomLoggerModule's default application // consumer // .apply(SomeOtherMiddleware) // .exclude('/admin*') // .forRoutes('*'); } } async function bootstrap() { const app: INestApplication = await NestFactory.create(AppModule); await app.listen(process.env.PORT || 3000); console.log(`Application is running on: ${await app.getUrl()}`); } // To run this example, you would typically have an Express/Fastify adapter configured // and a controller responding to /data* or other routes. bootstrap();