gulpfile.babel.js

import gulp from 'gulp';
import gulpLoadPlugins from 'gulp-load-plugins';
import del from 'del';
import runSequence from 'run-sequence';
import {stream as wiredep} from 'wiredep';

const $ = gulpLoadPlugins();

gulp.task('extras', () => {
  return gulp.src([
    'app/*.*',
    'app/_locales/**',
    'app/scripts.vendor/**',
    'app/scripts/mutation-observers.js',
    '!app/scripts.babel',
    '!app/*.json',
    '!app/*.html',
    '!app/styles.scss'
  ], {
    base: 'app',
    dot: true
  }).pipe(gulp.dest('dist'));
});

gulp.task('lint', () => {
  return gulp.src('app/scripts.babel/**/*.js')
    .pipe($.eslint())
    .pipe($.eslint.format());
});

gulp.task('images', () => {
  return gulp.src('app/images/**/*')
    .pipe($.if($.if.isFile, $.cache($.imagemin({
      progressive: true,
      interlaced: true,
      // don't remove IDs from SVGs, they are often used
      // as hooks for embedding and styling
      svgoPlugins: [{cleanupIDs: false}]
    }))
      .on('error', (err) => {
        console.log(err);
        this.end();
      })))
    .pipe(gulp.dest('dist/images'));
});

gulp.task('styles', () => {
  return gulp.src('app/styles.scss/**/*.scss')
    .pipe($.plumber())
    .pipe($.sass.sync({
      outputStyle: 'expanded',
      precision: 10,
      includePaths: ['.']
    }).on('error', $.sass.logError))
    .pipe(gulp.dest('app/styles'));
});

gulp.task('html', ['styles'], () => {
  return gulp.src('app/*.html')
    .pipe($.useref({searchPath: ['.tmp', 'app', '.']}))
    // .pipe($.sourcemaps.init())
    // .pipe($.if('*.js', $.uglify()))
    .pipe($.if('*.css', $.cleanCss({compatibility: '*'})))
    // .pipe($.sourcemaps.write())
    .pipe($.if('*.html', $.htmlmin({
      collapseWhitespace: false,
      minifyCSS: false,
      minifyJS: false,
      removeComments: true
    })))
    .pipe(gulp.dest('dist'));
});

gulp.task('chromeManifest', () => {
  return gulp.src('app/manifest.json')
    .pipe($.chromeManifest({
      buildnumber: require('./package.json').version,
      background: {
        target: 'scripts/background.js',
        exclude: [
          'scripts/live-reload.js'
        ]
      }
    }))
    .pipe($.if('*.css', $.cleanCss({compatibility: '*'})))
    // .pipe($.if('*.js', $.sourcemaps.init()))
    // .pipe($.if('*.js', $.uglify()))
    // .pipe($.if('*.js', $.sourcemaps.write('.')))
    .pipe(gulp.dest('dist'));
});

gulp.task('devChromeManifest', () => {
  return gulp.src('app/manifest.json')
    .pipe($.chromeManifest({
      buildnumber: require('./package.json').version
    }))
    .pipe(gulp.dest('app'));
});

gulp.task('firefox-extra-permissions', () => {
  return gulp.src('dist/manifest.json')
    .pipe($.jsonTransform((data, file) => {
      data.permissions.push('tabs');
      return data;
    }, "\t"))
    .pipe(gulp.dest('dist'));
});

gulp.task('babel', () => {
  return gulp.src('app/scripts.babel/**/*.js')
    .pipe($.babel())
    .pipe(gulp.dest('app/scripts'));
});

gulp.task('clean', del.bind(null, ['.tmp', 'dist']));

gulp.task('watch', ['devChromeManifest', 'lint', 'babel', 'styles'], () => {
  $.livereload.listen();

  gulp.watch([
    'app/*.html',
    'app/scripts/**/*.js',
    'app/images/**/*',
    'app/styles/**/*',
    'app/_locales/**/*.json'
  ]).on('change', $.livereload.reload);

  gulp.watch('app/scripts.babel/**/*.js', ['lint', 'babel']);
  gulp.watch('app/styles.scss/**/*.scss', ['styles']);
  gulp.watch('bower.json', ['wiredep']);
});

gulp.task('size', () => {
  return gulp.src('dist/**/*').pipe($.size({title: 'build', gzip: true}));
});

gulp.task('wiredep', () => {
  gulp.src('app/*.html')
    .pipe(wiredep({
      ignorePath: /^(\.\.\/)*\.\./
    }))
    .pipe(gulp.dest('app'));
});

gulp.task('package-chrome', ['build-chrome'], () => {
  var manifest = require('./dist/manifest.json');
  return gulp.src('dist/**')
    .pipe($.zip('Chrome-Netflix-Tweaked-' + manifest.version + '.zip'))
    .pipe(gulp.dest('package'));
});

gulp.task('package-firefox', ['build-firefox'], () => {
  var manifest = require('./dist/manifest.json');
  return gulp.src('dist/**')
    .pipe($.zip('Firefox-Netflix-Tweaked-' + manifest.version + '.zip'))
    .pipe(gulp.dest('package'));
});

gulp.task('build-chrome', ['clean'], (cb) => {
  runSequence(
    'lint', 'babel', 'chromeManifest',
    ['html', 'images', 'extras'],
    'size', cb);
});

gulp.task('build-firefox', ['clean'], (cb) => {
  runSequence(
    'lint', 'babel', 'chromeManifest',
    ['html', 'images', 'extras'],
    'firefox-extra-permissions',
    'size', cb);
});

gulp.task('package', (cb) => {
  runSequence('package-chrome', 'package-firefox', cb);
});

gulp.task('default', ['watch']);