Flarum\Http\WebApp\AbstractWebApp::addTranslations PHP Method

    private function addTranslations(WebAppView $view)
    {
        $translations = array_get($this->locales->getTranslator()->getMessages(), 'messages', []);
        $translations = $this->filterTranslations($translations);
        $view->getLocaleJs()->setTranslations($translations);
    }