gulpfile.js

var gulp = require('gulp');
var nodemon = require('gulp-nodemon');
var del = require('del');

// server
var babel = require('gulp-babel');

// client
var browserify = require('browserify');
var babelify = require('babelify');
var through2 = require('through2');
var stylus = require('gulp-stylus');

gulp.task('stylus', () => {
  del.sync('./dist/css');
  return gulp.src('./client/stylus/**/*.styl')
    .pipe(stylus().on('error', function(err) {
      console.error(err);
      this.emit('end');
    }))
    .pipe(gulp.dest('./dist/css'));
});

gulp.task('compile', () => {
  del.sync('./server/lib');
  return gulp.src('./server/src/**/*.js')
    .pipe(babel())
    .pipe(gulp.dest('./server/lib'))
});

gulp.task('serve', ['compile', 'stylus'], () => {
  gulp.watch('./client/stylus/**/*.styl', ['stylus']);
  return nodemon({
    script: './server',
    ignore: [
      './server/lib/*.js',
      './node_modules'
    ],
    tasks: ['compile'],
    env: { 'NODE_ENV': 'development' }
  });
});

gulp.task('default', () => {
  console.log("hej.");
});