primevue-mirror/plugins/appState.js

const $appState = {
    install: (Vue) => {
        Vue.config.globalProperties.$appState = reactive({
            theme: 'lara-light-blue',
            darkTheme: false,
            codeSandbox: false,
            sourceType: 'options-api',
            newsActive: true,
            announcement: {},
            storageKey: 'primevue'
        });
    }
};

export default defineNuxtPlugin((nuxtApp) => {
    nuxtApp.vueApp.use($appState);
});