lang file localization

Route::get('/js/lang.js', function () {
    Cache::forget('lang.js');

    $strings = Cache::rememberForever('lang.js', function () {
        $lang = config('app.locale');

        $files   = glob(resource_path('lang/' . $lang . '/*.php'));
        $strings = [];

        foreach ($files as $file) {
            $name           = basename($file, '.php');
            $strings[$name] = require $file;
        }

        return $strings;
    });
    $javascript = 'window.i18n = ' . json_encode($strings) . ';';

    return response($javascript, 200, ['Content-Type' => 'text/javascript']);
})->name('assets.lang');