gulpfile (CoffeeScript)

gulpfile.coffee

gulp        = require 'gulp'
sass        = require 'gulp-sass'
uglify      = require 'gulp-uglify'
minifyCss   = require 'gulp-minify-css'
concat      = require 'gulp-concat'
watch       = require 'gulp-watch'
webserver   = require 'gulp-webserver'
runSequence = require 'run-sequence'
  
gulp.task 'uglify', ->
  compileFileName = 'application.js'
  gulp.src 'assets/javascripts/*.js'
  .pipe concat(compileFileName)
  .pipe uglify()
  .pipe gulp.dest('assets/javascripts/')
 
gulp.task 'compile-sass', ->
  gulp.src 'assets/sass/*.scss'
    .pipe sass()
    .pipe gulp.dest('assets/stylesheets/')
 
gulp.task 'minify', ->
  compileFileName = 'min.css'
  gulp.src 'assets/stylesheets/*.css'
  .pipe concat(compileFileName)
  .pipe minifyCss()
  .pipe gulp.dest('assets/stylesheets/')
 
gulp.task 'webserver', ->
  gulp.src('./')
  .pipe(webserver({
    livereload: true
    port: 3000
    open: true
    })
  )
 
gulp.task 'build', ->
  runSequence(
    ['compile-sass'],
    ['uglify', 'minify']
  )
 
gulp.task 'watch', ->
  gulp.watch ['assets/**/*', '*.html'], ['build']
 
gulp.task 'default', ->
  runSequence(
    ['build'],
    ['webserver'],
    ['watch']
    )