Logger

A logger for Node.js.

Install

pnpm i @avanlan/logger

Usage

import { Logger } from '@avanlan/logger';

const logger = new Logger();

logger.access.info("access log")
logger.daily.info("daily log")
logger.error.error("error log")
logger.debug.info("debug log")

// output
// [2024-08-08 16:37:24] [main-app] [INFO]: access log
// [2024-08-08 16:37:24] [main-app] [INFO]: daily log
// [2024-08-08 16:37:24] [main-app] [ERROR]: error log
// [2024-08-08 16:37:24] [main-app] [INFO]: debug log

Configuration

Project

Specify the project name.

import { Logger } from '@avanlan/logger';

const logger = new Logger({
  projectName: "auth-service",
});

logger.daily.info("info log")

// output daily log
// [2024-08-08 16:37:24] [auth-service] [INFO]: info log

Output Logger File

project
├── logger
│   ├── access
│   │   └── access.YYYY-MM-DD.log
│   ├── daily
│   │   └── daily.YYYY-MM-DD.log
│   ├── error
│   │   └── error.YYYY-MM-DD.log
│   └── debug.log

Logger Middleware

Koa

import { Logger, koaHttpLogger } from "@avanlan/logger";
import { bodyParser } from '@koa/bodyparser';

const logger = new Logger();

app.use(bodyparser());
app.use(koaHttpLogger(logger));

// output access log
// [2024-08-08 17:34:20] [main-app] [INFO]: 2ms GET / ::1 {"headers":{"host":"localhost:8044","user-agent":"curl/8.6.0","accept":"*/*"},"query":{},"body":{}}

Express

import { Logger, expressHttpLogger } from "@avanlan/logger";
import bodyParser from 'body-parser';

const logger = new Logger();

app.use(bodyParser.json());
app.use(expressHttpLogger(logger));

// output access log
// [2024-08-08 17:47:55] [main-app] [INFO]: 0ms GET / ::1 {"headers":{"host":"localhost:5834","user-agent":"curl/8.6.0","accept":"*/*"},"query":{}}