gulp.js

var gulp = require('gulp');
var sass = require('gulp-ruby-sass');
var concat = require('gulp-concat');
var stripDebug = require('gulp-strip-debug');
var uglify = require('gulp-uglify');
var rimraf = require('gulp-rimraf');
var del = require('del');

var paths = {
  jsdir: './_src/js/**/*.js',
  sass:'./_src/sass/**/*.scss'
};

// REMOVALS / CLEAN-UP
gulp.task('clean-js', function(cb){ del(['./dist/js/'], cb); });
gulp.task('clean-css',['clean-sass'], function(cb){ del(['./dist/css/'], cb); });
gulp.task('clean-sass', function(cb){ del(['.sass-cache'], cb); });

// TASKS
gulp.task('js',['clean-js'],function() {
    // Login script
    gulp.src('./_src/js/login/login.js')
      .pipe(stripDebug())
      .pipe(uglify())
      .pipe(concat('login.min.js'))
      .pipe(gulp.dest('./dist/js/'));

    gulp.src('./_src/js/site/**/*.js')
      .pipe(concat('verde.js'))
      //.pipe(stripDebug())
      //.pipe(uglify())
      .pipe(concat('verde.min.js'))
      .pipe(gulp.dest('./dist/js/'));

    gulp.src('./_src/js/3rdParty/*.js')
      //.pipe(uglify())
      .pipe(concat('vendor.min.js'))
      .pipe(gulp.dest('./dist/js/'));
});

// Pay attention to the dependency chain. Sass fires clean-css which fires clean-sass.
gulp.task('sass',['clean-css'], function () {
    gulp.src('./_src/sass/**/*.scss')
    	.pipe(sass())
    	.pipe(gulp.dest('./dist/css/'));
});

gulp.task('watch',function(){
    gulp.watch(paths.jsdir,['js']);
    gulp.watch(paths.sass,['sass']);
});

// 'clean-sass-cache','sass',
gulp.task('default', ['js','sass']);