ts-logger

An experimental logger library for NodeJS written in TypeScript (working progress).

Usage

$ npm install ts-logger

/* methods: error/err | warn/warning | info | log | debug | silly */
const logger = require("ts-logger").logger();

logger.error("I'm an error");
logger.err("I'm also an error");

const err = new Error("oh noo!!");
logger.err(err);
logger.err("an error was fired!", err);
logger.warn("an error was fired!", err.message);

logger.log("one", 2,3, [4, 'five'], {six: 'seven', eight: [9, 10, '...']});

ANSI colors support.

The library automatically detects whether colors are supported by the output environment. However you can enable/disable this feature by launching your programs with the following flags respectively: --color or --no-color.

Express middleware

A basic middleware to be mounted on express which output has a specific format. For every request the middleware prints two messages one for the request (:access_uuid <== :method :url :remoteAddr :httpVersion :userAgent) an the other for the response (:access_uuid ==> :status :length :elapsed).

const Logger = require('ts-logger'),
    logger = Logger.logger();

logger.silly("Init app.js");

const express = require('express'),
  app = express();

// it is important that this two express middlewares stay above of the logger one..
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));

// Logger
app.use(Logger.middleware());

// ...