text: import concat        from 'gulp-concat';
  import gulp          from 'gulp';
  import ngAnnotate    from 'gulp-ng-annotate';
  import plumber       from 'gulp-plumber';
  import uglify        from 'gulp-uglify';
  import babel from 'gulp-babel';
  
  const build = () => {
    gulp
      .src('./src/lock-screen/lock-screen.js')
      .pipe(plumber())
      .pipe(babel())
      .pipe(ngAnnotate())
      .pipe(uglify())
      .pipe(concat('index.js'))
      .pipe(gulp.dest('./dist'));
  };
  
  gulp.task('build', build);
  
  gulp.task('watch', () => {
    gulp.run(['build']);
    gulp.watch('./src/lock-screen/lock-screen.js', ['build']);
  });
  
  gulp.task('default', ['build']);
  