pimp_my_tube/gulpfile.js

let gulp         = require('gulp'),
    clean        = require('gulp-clean'),
    gulpif       = require('gulp-if'),
    minify       = require('gulp-minify'),
    jshint       = require('gulp-jshint'),
    babel        = require('gulp-babel'),
    runSequence  = require('run-sequence'),
    copy         = require('gulp-copy'),
    cleanCss     = require('gulp-clean-css'),
    csslint      = require('gulp-csslint'),
    rename       = require("gulp-rename"),
    imagemin     = require("gulp-image"),
    concat       = require("gulp-concat"),
    plumber      = require("gulp-plumber"),
    zip          = require('gulp-zip'),
    useref       = require('gulp-useref'),
    args         = require('get-gulp-args')(),
    replace      = require('gulp-replace-task');

var platform = 'chrome';

if (args.platform == 'firefox') {
    platform = 'moz';
}

var onError = function (err) {
    console.log(err);
};

gulp.task('clean', function() {

    return gulp.src([
        'release/*',
        'extension.zip'
    ], {force: true})
        .pipe(clean());

});

gulp.task('compress', function() {

    return gulp.src('release/**/*')
        .pipe(zip('extension.zip'))
        .pipe(gulp.dest('.'));
});

gulp.task('jslint', function() {

    return gulp.src('extension/**/*.js')
        .pipe(jshint({
            esversion: 6
        }))
        .pipe(jshint.reporter('jshint-stylish'));
});

gulp.task('csslint', function() {

    return gulp.src('extension/**/*.css')
        .pipe(csslint())
        .pipe(csslint.formatter())
});


gulp.task('dev-no-lint', function() {

    return runSequence(
        'clean',
        ['core', 'content_scripts'],
        'images',
        'manifest',
        'font'
    );
});

gulp.task('dev', function() {

    return runSequence(
        'clean',
        ['jslint', 'csslint'],
        ['core', 'content_scripts'],
        'images',
        'manifest',
        'font'
    );

});

gulp.task('release', function() {
    return runSequence(
        'clean',
        ['jslint', 'csslint'],
        ['core', 'content_scripts'],
        'images',
        'manifest',
        'font',
        'compress'
    );
});

gulp.task('font', function() {

    return gulp.src('extension/fonts/**/*')
        .pipe(gulp.dest('release/fonts'));
});

gulp.task('core', function() {

    return gulp.src('extension/view/*.html')
        .pipe(useref())
        .pipe(plumber({
           errorHandler: onError
        }))
        .pipe(gulpif('*.js', replace({
          patterns : [
            {
              match : /\/\/\*\* NODE(?:\n.*)*\/\/\*\*/,
              replace : ''
            }
          ]
        })))
        .pipe(gulpif('*.js', babel({
            presets: ['es2015']
        })))
        .pipe(gulpif('*.js', minify({
            ext:{
                min:'.js'
            },
            noSource : true
        })))
        .pipe(replace({
          patterns : [
            {
              match : /\*\*\*browser\*\*\*/g,
              replace : platform
            }
          ]
        }))
        .pipe(gulpif('*.css', cleanCss({

        })))
        .pipe(gulp.dest('release/view'));

});

gulp.task('content_scripts', function() {

    let notification = gulp.src([
            'extension/js/content_scripts/notification.js',
        ])
        .pipe(plumber())
        .pipe(gulpif('*.js', replace({
          patterns : [
            {
              match : /\/\/\*\* NODE(?:\n.*)*\/\/\*\*/,
              replace : ''
            }
          ]
        })))
        .pipe(babel({
            presets : ["es2015"]
        }))
        .pipe(concat('notification.js'))
        .pipe(minify({
            ext : {
                min : '.min.js'
            },
            noSource : true
        }))
        .pipe(gulp.dest('release/js'));

        let serp = gulp.src([
                'extension/js/content_scripts/serp.js'
            ])
            .pipe(plumber())
            .pipe(gulpif('*.js', replace({
              patterns : [
                {
                  match : /\/\/\*\* NODE(?:\n.*)*\/\/\*\*/,
                  replace : ''
                }
              ]
            })))
            .pipe(babel({
                presets : ["es2015"]
            }))
            .pipe(minify({
                ext : {
                    min : '.min.js'
                },
                noSource : true
            }))
            .pipe(gulp.dest('release/js'));

        let extension = gulp.src([
                    'extension/js/content_scripts/extension.js'
                ])
                .pipe(plumber())
                .pipe(gulpif('*.js', replace({
                  patterns : [
                    {
                      match : /\/\/\*\* NODE(?:\n.*)*\/\/\*\*/,
                      replace : ''
                    }
                  ]
                })))
                .pipe(babel({
                    presets : ["es2015"]
                }))
                .pipe(minify({
                    ext : {
                        min : '.min.js'
                    },
                    noSource : true
                }))
                .pipe(gulp.dest('release/js'));

        return [notification, serp, extension];

});

gulp.task('images', function() {

    return gulp.src('extension/images/*')
        .pipe(imagemin())
        .pipe(gulp.dest('release/images'))
});

gulp.task('manifest', function() {

    return gulp.src('extension/manifest.json')
        .pipe(gulp.dest('release'))
})

gulp.task('watch', function() {
    gulp.watch('extension/**/*', ['dev-no-lint']);
})