RootPanel/gulpfile.js

var gulp = require('gulp');
var less = require('gulp-less');
var coffee = require('gulp-coffee');

gulp.task('less', function() {
  gulp.src(['./**/*.less', '!node_modules/**/*.less'])
      .pipe(less())
      .pipe(gulp.dest('./'));
});

gulp.task('coffee', function() {
  gulp.src(['./**/*.coffee', '!node_modules/**/*.coffee'])
      .pipe(coffee({bare: true}))
      .on('error', function(err) {
        throw err;
      })
      .pipe(gulp.dest('./'));
});

gulp.task('watch', function(){
  gulp.watch([ './**/*.coffee', '!node_modules/**/*.coffee'], ['coffee']);
  gulp.watch(['./**/*.less', '!node_modules/**/*.less'], ['less']);
});

gulp.task('default', ['less', 'coffee', 'watch']);