Who know it?

Who use it?

Why?

Has 1964 plugins

1

Has modules notation

Using streams

Streams

Get stream data and ...

... processing

API

gulp.src

gulp.src('client/templates/*.jade')
  .pipe(jade())
  .pipe(minify())
  .pipe(gulp.dest('build/minified_templates'));

gulp.dest

gulp.src('./client/templates/*.jade')
  .pipe(jade())
  .pipe(gulp.dest('./build/templates'))
  .pipe(minify())
  .pipe(gulp.dest('./build/minified_templates'));

gulp.task

gulp.task('somename', function() {
  // Do stuff
});

gulp.task('somename', function() {
  var stream = gulp.src('client/**/*.js')
    .pipe(minify())
    .pipe(gulp.dest('build'));
  return stream;
});

gulp.watch

var watcher = gulp.watch('js/**/*.js', 
    ['uglify','reload']);

watcher.on('change', function(event) {
    // Do some staff
});

Use it

 1. Node.JS and npm

2. npm i gulp -g

3. npm i gulp

4. fill gulpfile.js 

// Минивебсервер для livereload 
var lr = require('tiny-lr'), 
// Сообственно Gulp JS
    gulp = require('gulp'), 
// Плагин для Stylus
    stylus = require('gulp-stylus'), 
// Livereload для Gulp
    livereload = require('gulp-livereload'), 
// Плагин для Myth
    myth = require('gulp-myth'), 
// Минификация CSS
    csso = require('gulp-csso'),

4. fill gulpfile.js 

// Собираем Stylus
gulp.task('stylus', function() {
    gulp.src('./assets/stylus/screen.styl')
        .pipe(stylus({
            use: ['nib']
        })) // собираем stylus
// Если есть ошибки, выводим и продолжаем
    .on('error', console.log) 
// добавляем префиксы
    .pipe(myth()) 
// записываем css
    .pipe(gulp.dest('./public/css/'))
// даем команду на перезагрузку css 
    .pipe(livereload(server));
});

5. Run the task

$ gulp stylus

Custom plugin

var through = require('through2');
var path = require('path');

module.exports = function(ext, replaceExt) {
    var extension_replace = function(file, encoding, callback){
        var replaceExt = replaceExt || false,
            _path = file.path;
        
	if (typeof ext === 'string' && ext.length > 0) {
 	    ext = ext.indexOf('.') === 0 ? ext : '.' + ext;
            file.path = _path.replace(
                                replaceExt ? 
                                replaceExt : 
                                path.extname(_path), 
                                ext
                        );
        }
        callback(null, file);
    };
    return through.obj(extension_replace);
};
var ext_replace = require('./ext-replace');

gulp.task('change', function() {
  gulp.src('styles/*.css')
      .pipe(ext_replace('.scss'))
      .pipe(gulp.dest('dist'))
});

Migration

Why we need it?

If it grunt

Improvements

Using Gulp inside Grunt

var fs = require('vinyl-fs'),
    gzip = require('gulp-gzip')

grunt.registerTask('zip', function () {
  fs.src('./build/build.js')
    .pipe(gzip())
    .pipe(fs.dest('./build'))
    .on('end', this.async())
})

Using Grunt tasks in Gulp

var gulp = require('gulp');
require('gulp-grunt')(gulp);

//task definition
gulp.task('default', function(){

    //run complete grunt tasks
    gulp.run('grunt-minify');
    gulp.run('grunt-test-assets')

    //or run specific targets
    gulp.run('grunt-sass:dist');
    gulp.run('grunt-browserify:dev');
});

If you want to use webpack

var gulp = require("gulp");
var webpack = require("webpack");
var WebpackDevServer = 
    require("webpack-dev-server");

gulp.task("webpack", function(callback) {
    // run webpack
    webpack({
        // configuration
    }, function(err, stats) {
        //error handling
        callback();
    });
});
gulp.task("webpack-dev-server", 
    function(callback) {
        // Start a webpack-dev-server
        var compiler = webpack({
            // configuration
        });
    
        new WebpackDevServer(compiler, {
            // server and middleware options
        }).listen(8080, "localhost", 
            function(err){
                // Server listening 
                // Errors handling
                callback();
            }
        );
});

QUESTIONS?

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