How to setup the path in winston and app.module.ts for Linux and Windows localhost-CodePudding

I cannot be the first developing on Windows 10 and wanting the log-files in dev mode on the localhost and pump/pipe it into /var/logs/myservice folder if it is in integration or production.

How can one replace the window path with a linux path according to environment variables?

In this case I use winston and nestjs.

import { Module } from '@nestjs/common';
import { EventEmitterModule } from '@nestjs/event-emitter';
import { AppController } from './app.controller';
import { AppGateway } from './app.gateway';
import { AppService } from './app.service';
import { WinstonModule } from 'nest-winston';
import * as winston from 'winston';


@Module({
  imports: [ 
    WinstonModule.forRoot({
      level: 'info',
      format: winston.format.json(),
      defaultMeta: { service: 'trading-signal-listener' },
      transports: [
        //
        // - Write all logs with level `error` and below to `error.log`
        // - Write all logs with level `info` and below to `combined.log`
        //
        new winston.transports.File({ filename: 'error.log', level: 'error' }),
        new winston.transports.File({ filename: 'combined.log' }),
      ],
    }),
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}

Any help appreciated.

CodePudding user response：

I'm not quite sure what's your problem, can't you just use @nestjs/config as described here https://docs.nestjs.com/techniques/configuration and based on environment variables pass a specific path to your WinstonModule?