node v0.10.5, winston v0.7.1

.gitignore

node_modules

README.md

See

• winstonjs/winston#241
• winstonjs/winston#244

package.json

{
  "name": "winston-meta",
  "version": "0.0.0",
  "description": "ERROR: No README.md file found!",
  "main": "winston-meta.js",
  "dependencies": {
    "winston": "git://github.com/apodzolko/winston.git#1541dfc7b50f98acd4054c44251f35241f0facdf"
  },
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "https://gist.github.com/5508377.git"
  },
  "author": "",
  "license": "BSD",
  "gitHead": "ac72a750c1f8805cb89ca8e7f57dafa5f73fbf0f"
}

run.sh

#!/bin/sh
rm -f somefile.log
node winston-meta.js

somefile.log

{"level":"info","message":"test message my string","timestamp":"2013-05-03T11:45:29.257Z"}
{"level":"info","message":"test message 123","timestamp":"2013-05-03T11:45:29.260Z"}
{"level":"info","message":"test message {\"number\":123}","timestamp":"2013-05-03T11:45:29.260Z"}
{"number":123,"level":"info","message":"test message first, second","timestamp":"2013-05-03T11:45:29.261Z"}
{"number":123,"level":"info","message":"test message first second","timestamp":"2013-05-03T11:45:29.262Z"}
{"number":123,"level":"info","message":"test message first, second","timestamp":"2013-05-03T11:45:29.262Z"}
{"number":123,"level":"info","message":"test message first second","timestamp":"2013-05-03T11:45:29.263Z"}

winston-meta.js

/*
// source is https://github.com/flatiron/winston#logging-with-metadata
npm install winston
node winston-meta.js
*/

var winston = require('winston');
var logger = new (winston.Logger)({
  transports: [
    new (winston.transports.Console)(),
    new (winston.transports.File)({ filename: 'somefile.log' })
  ]
});

logger.info('test message %s', 'my string');
// info: test message my string

logger.info('test message %d', 123);
// info: test message 123

logger.info('test message %j', {number: 123}, {});
// info: test message {"number":123}
// meta = {}

logger.info('test message %s, %s', 'first', 'second', {number: 123});
// info: test message first, second
// meta = {number: 123}

logger.info('test message', 'first', 'second', {number: 123});
// info: test message first second
// meta = {number: 123}

logger.info('test message %s, %s', 'first', 'second', {number: 123}, function(){});
// info: test message first, second
// meta = {numer: 123}
// callback = function(){}

logger.info('test message', 'first', 'second', {number: 123}, function(){});
// info: test message first second
// meta = {numer: 123}
// callback = function(){}