Tip: Using with Gulp and Nodemon

If you use gulp-nodemon to run your application during development, you can automatically pipe the application's output through the bunyan CLI to format it:

var nodemon = require('gulp-nodemon');
var childProcess = require('child_process');
var path = require('path');

gulp.task('server', function (done) {

	nodemon({
		script: './server.js', // <-- your application
		watch: ['./app'],
		stdout: false // <-- important, otherwise output won't get piped properly
	})
	.on('readable', function () {
		// Pass output through bunyan formatter
		var bunyan = childProcess.fork(
			path.join('.', 'node_modules', 'bunyan', 'bin', 'bunyan'),
			['--output', 'simple'], // <-- any of the CLI options that you prefer
			{silent: true}
		);

		bunyan.stdout.pipe(process.stdout);
		bunyan.stderr.pipe(process.stderr);
		this.stdout.pipe(bunyan.stdin);
		this.stderr.pipe(bunyan.stdin);
	});

	done();
};