function replaceBackSlash(str) {
  return str.replace(/\\/g, '/');
}
/*.html')
    .pipe(assets)
    .pipe(gulpUniqueFiles())
    .pipe(gulpIf('*.css', gulpCleanCSS()))
    .pipe(gulpIf('*.js', gulpUglify()))
    .pipe(gulpRev())
    .pipe(assets.restore())
    .pipe(gulpUseRef())
    .pipe(gulpRevReplace({
      prefix: '/'
    }))
    .pipe(gulp.dest('public'));
});

gulp.task('screenshot:clean', function() {
  return del([dirs.screenshots + '/*