public function exportTranslations($group = null, $json = false)
    {
        $basePath = $this->app['path.lang'];

        if (! is_null($group) && ! $json) {
            if (! in_array($group, $this->config['exclude_groups'])) {
                $vendor = false;
                if ($group == '*') {
                    return $this->exportAllTranslations();
                } else {
                    if (Str::startsWith($group, 'vendor')) {
                        $vendor = true;
                    }
                }

                $tree = $this->makeTree(Translation::ofTranslatedGroup($group)
                                                    ->orderByGroupKeys(Arr::get($this->config, 'sort_keys', false))
                                                    ->get());

                foreach ($tree as $locale => $groups) {
                    if (isset($groups[$group])) {
                        $translations = $groups[$group];
                        $path = $this->app['path.lang'];

                        $locale_path = $locale.DIRECTORY_SEPARATOR.$group;
                        if ($vendor) {
                            $path = $basePath.'/'.$group.'/'.$locale;
                            $locale_path = Str::after($group, '/');
                        }
                        $subfolders = explode(DIRECTORY_SEPARATOR, $locale_path);
                        array_pop($subfolders);

                        $subfolder_level = '';
                        foreach ($subfolders as $subfolder) {
                            $subfolder_level = $subfolder_level.$subfolder.DIRECTORY_SEPARATOR;

                            $temp_path = rtrim($path.DIRECTORY_SEPARATOR.$subfolder_level, DIRECTORY_SEPARATOR);
                            if (! is_dir($temp_path)) {
                                mkdir($temp_path, 0777, true);
                            }
                        }

                        $path = $path.DIRECTORY_SEPARATOR.$locale.DIRECTORY_SEPARATOR.$group.'.php';

                        $output = "<?php\n\nreturn ".var_export($translations, true).';'.\PHP_EOL;
                        $this->files->put($path, $output);
                    }
                }
                Translation::ofTranslatedGroup($group)->update(['status' => Translation::STATUS_SAVED]);
            }
        }

        if ($json) {
            $tree = $this->makeTree(Translation::ofTranslatedGroup(self::JSON_GROUP)
                                                ->orderByGroupKeys(Arr::get($this->config, 'sort_keys', false))
                                                ->get(), true);

            foreach ($tree as $locale => $groups) {
                if (isset($groups[self::JSON_GROUP])) {
                    $translations = $groups[self::JSON_GROUP];
                    $path = $this->app['path.lang'].'/'.$locale.'.json';
                    $output = json_encode($translations, \JSON_PRETTY_PRINT | \JSON_UNESCAPED_UNICODE);
                    $this->files->put($path, $output);
                }
            }

            Translation::ofTranslatedGroup(self::JSON_GROUP)->update(['status' => Translation::STATUS_SAVED]);
        }

        $this->events->dispatch(new TranslationsExportedEvent());
    }