Gulp

Gulp 4 full

//install global
npm install --global gulp-cli

//in project 
npm init   /* create  package.json */
npm install gulp --save-dev

Install

download node js

install global: npm i gulp -g

install project: 
  ->npm init
  ->npm i gulp --save-dev
  
install bower
  ->npm i -g bower
  ->install git
  
  ->create file .bowerrc
    {
      "directory": "app/libs/"
    }
  
min-css, min-js
  ->npm i gulp-concat gulp-uglifyjs --save-dev    
  
install libs
  ->bower install jquery.form-styler
  ->bower install simplemde
  
  
<!-- NEW PROJECT -->
 ->npm i gulp
 ->npm i
 ->bower i jquery magnific-popup slick-carousel bootstrap-sass-grid jquery-mask-plugin jquery.form-styler nouislider wowjs wnumb

Libs

bower i jquery magnific-popup slick-carousel bootstrap-sass-grid jquery-mask-plugin jquery.form-styler nouislider

//libs.sass
@import "app/libs/magnific-popup/dist/magnific-popup"
@import "app/libs/bootstrap-sass-grid/sass/bootstrap-sass-grid"
@import "app/libs/slick-carousel/slick/slick.scss"
@import "app/libs/jquery.form-styler/dist/jquery.formstyler"
@import "app/libs/nouislider/distribute/nouislider"

//gulpfile
//concat & uglify
gulp.task('scripts', function () {
    return gulp.src([
      'app/libs/jquery/dist/jquery.min.js',
      'app/libs/magnific-popup/dist/jquery.magnific-popup.min.js',
      'app/libs/jquery-mask-plugin/dist/jquery.mask.js',
      'app/libs/slick-carousel/slick/slick.js',
      'app/libs/jquery.form-styler/dist/jquery.formstyler.js',
      'app/libs/nouislider/distribute/nouislider.js'
    ])
        .pipe(concat('libs.min.js'))
        .pipe(uglify())
        .pipe(gulp.dest('app/js'))
});