@minddoc/nest-express-winston NPM

nest-express-winston

Implementation of a NestJS logger using winston and express-winston. It replaces the default NestJS logger with winston, and optionally also adds express logs using express-winston.

Installation

yarn add @minddoc/nest-express-winston

Usage

import {
  createExpressWinstonHandler,
  createNestWinstonLogger,
  httpContextMiddleware,
  requestIdHandler,
} from '@minddoc/nest-express-winston';

Basic Example

Add the following to your index.ts / main.ts:

import 'dotenv/config';
import 'module-alias/register';
import 'reflect-metadata';

import { ValidationPipe } from '@nestjs/common';
import { NestFactory } from '@nestjs/core';
import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';

import {
  createExpressWinstonHandler,
  createNestWinstonLogger,
  httpContextMiddleware,
  requestIdHandler,
} from '@minddoc/nest-express-winston';

import { AppModule } from './app.module';
import { EnvService } from './env';

async function bootstrap() {
  const nestWinstonLogger = createNestWinstonLogger('app');
  const app = await NestFactory.create(AppModule, { logger: nestWinstonLogger });

  // Use express-winston for logging request information
  const expressWinstonHandler = createExpressWinstonHandler(nestWinstonLogger.logger);
  app.use(expressWinstonHandler);

  // Use express-http-context for context injection (request id)
  app.use(httpContextMiddleware);
  app.use(requestIdHandler);

  app.useGlobalPipes(new ValidationPipe());
  app.setGlobalPrefix(EnvService.get().API_BASE_PATH);

  const options = new DocumentBuilder()
    .setTitle('API')
    .setDescription('Logging API Example')
    .setVersion('1.0')
    .build();
  const document = SwaggerModule.createDocument(app, options);
  SwaggerModule.setup('api', app, document);

  await app.listen(EnvService.get().API_PORT, EnvService.get().API_HOST);
}
bootstrap();