node-bunyan-lite/examples/err.js

// Example logging an error:

var http = require('http');
var Logger = require('../lib/bunyan');
var util = require('util');

var log = new Logger({
  name: "myserver",
  serializers: {
    err: Logger.stdSerializers.err,   // <--- use this
  }
});

try {
  throw new TypeError("boom");
} catch (err) {
  log.warn({err: err}, "operation went boom: %s", err)   // <--- here
}

log.info(new TypeError("how about this?"))  // <--- alternatively this


try {
  throw "boom string";
} catch (err) {
  log.error(err)
}

/*

$ node err.js  | ../bin/bunyan -j
{
  "name": "myserver",
  "hostname": "banana.local",
  "err": {
    "stack": "TypeError: boom\n    at Object.<anonymous> (/Users/trentm/tm/node-bunyan/examples/err.js:15:9)\n    at Module._compile (module.js:411:26)\n    at Object..js (module.js:417:10)\n    at Module.load (module.js:343:31)\n    at Function._load (module.js:302:12)\n    at Array.0 (module.js:430:10)\n    at EventEmitter._tickCallback (node.js:126:26)",
    "name": "TypeError",
    "message": "boom"
  },
  "level": 4,
  "msg": "operation went boom: TypeError: boom",
  "time": "2012-02-02T04:42:53.206Z",
  "v": 0
}
$ node err.js  | ../bin/bunyan 
[2012-02-02T05:02:39.412Z] WARN: myserver on banana.local: operation went boom: TypeError: boom
    TypeError: boom
        at Object.<anonymous> (/Users/trentm/tm/node-bunyan/examples/err.js:15:9)
        at Module._compile (module.js:411:26)
        at Object..js (module.js:417:10)
        at Module.load (module.js:343:31)
        at Function._load (module.js:302:12)
        at Array.0 (module.js:430:10)
        at EventEmitter._tickCallback (node.js:126:26)

*/