quasar/src/plugins/AppVisibility.json

Build high-performance VueJS user interfaces (SPA, PWA, SSR, Mobile and Desktop) in record time

{
  "injection": "$q.appVisible",

  "props": {
    "appVisible": {
      "tsInjectionPoint": true,
      "type": "Boolean",
      "desc": "Does the app have user focus? Or the app runs in the background / another tab has the user's attention",
      "reactive": true
    }
  }
}