next-ts-logger

This acts as log interceptor for next.js applications. Compatible with Pino and Winston.

Motivation

I was using pino and wanted to have also get my Next.js application work with it. I stumpled upon next-logger, but it does not support TypeScript and started to get buggy with turbopack enabled, so I decided to create this package.

Installation

npm install next-ts-logger

Install one of the supported loggers:

# Pino
npm install pino

# or Winston
npm install winston

Usage

Create an instrumentation.ts file in your Next.js project root (or src/ directory):

With Pino

// instrumentation.ts
import pino from "pino";
import { registerNextLogger } from "next-ts-logger";

export function register() {
  if (process.env.NEXT_RUNTIME === "nodejs") {
    const logger = pino();
    registerNextLogger(logger);
  }
}

With Winston

// instrumentation.ts
import winston from "winston";
import { registerNextLogger } from "next-ts-logger";

export function register() {
  if (process.env.NEXT_RUNTIME === "nodejs") {
    const logger = winston.createLogger({
      transports: [new winston.transports.Console()],
    });
    registerNextLogger(logger);
  }
}