test gulpfile

gulpfile.js

var
  gulp   = require('gulp'),
  jade   = require('gulp-jade'),
  stylus = require('gulp-stylus'),
  jshint = require('gulp-jshint'),
  concat = require('gulp-concat'),
  uglify = require('gulp-uglify'),
  rename = require('gulp-rename');

gulp.task('jade', function () {
  gulp.src('./*.jade')
    .pipe(jade({
      pretty:true
    }
    ))
    .pipe(gulp.dest('./public'));
});

gulp.task('stylus', function () {
  gulp.src('./*.styl')
    .pipe(stylus())
    .pipe(gulp.dest('./public/css'));
});

gulp.task('lint', function () {
  return gulp.src('js/*.js')
    .pipe(jshint())
    .pipe(jshint.reporter('default'));
});

// Concatenate and minify .js
gulp.task('scripts', function () {
  return gulp.src('js/*.js')
    .pipe(concat('main.js'))
    .pipe(gulp.dest('public/js'))
    .pipe(rename('main.min.js'))
    .pipe(uglify())
    .pipe(gulp.dest('public/js'));
});
 
var EXPRESS_PORT = 4000;
var EXPRESS_ROOT = __dirname;
var LIVERELOAD_PORT = 35729;
 
function startExpress() {
 
  var express = require('express');
  var app = express();
  app.use(require('connect-livereload')());
  app.use(express.static(EXPRESS_ROOT));
  app.listen(EXPRESS_PORT);

}

var lr;
function startLivereload() {
 
  lr = require('tiny-lr')();
  lr.listen(LIVERELOAD_PORT);

}

function startPlugins () {

  gulp.run('jade');
  gulp.run('stylus');
  gulp.run('lint');
  gulp.run('scripts');

}

function notifyLivereload(event) {
 
  gulp.src(event.path, {read: false})
      .pipe(require('gulp-livereload')(lr));

}

gulp.task('default', function () {
 
  startExpress();
  startLivereload();
  startPlugins();
  
  gulp.watch('*.jade', ['jade']);
  gulp.watch(['public/*.html'], notifyLivereload);

  gulp.watch('*.styl', ['stylus']);
  gulp.watch(['public/css/*.css'], notifyLivereload);

  gulp.watch('js/*.js', ['lint', 'scripts']);
  gulp.watch(['public/js/*.js'], notifyLivereload);

});