Browserify + Esnext + Watch + Errorhandling

gulp-browserify-esnext

var gulp = require('gulp')
var source = require('vinyl-source-stream')
var buffer = require('vinyl-buffer')
var browserify = require('browserify')
var esnext = require('gulp-esnext')
var notify = require('gulp-notify')


var build_dir = './bin'
var browserify_input = './main.js'
var browserify_output = './app.js'

gulp.task('main', function() {
	browserify(browserify_input, {})


	.bundle()
		.on('error', notify.onError(function(err) {
			return err.message;
		}))

	.pipe(source(browserify_output))
		.pipe(buffer())
		.pipe(esnext())
		.pipe(gulp.dest(build_dir))
		.pipe(notify({
			title: 'Finished',
			message: 'Build complete'
		}));
})

gulp.task('watch', function() {
	gulp.watch('./*.js', ['main'])
})



gulp.task('default', ['main', 'watch'])