analytics_track_event.js

import * as firebase from "nativescript-plugin-firebase"; 
// example of parameters
// const parameters = [{
//   key: "item_id",
//   value: "...some_uuid...",
// },
// {
//   key: "item_name",
//   value: "Test log event",
// }],
trackLogEvent(event, parameters = []) {
  return firebase.analytics
    .logEvent({
      key: event,
      parameters: parameters,
    })
    .then(
      () => {
        console.log(`Firebase Analytics event logged ${event}`);
      },
      (error) => {
        console.log(`Firebase Analytics event error ${error}`);
      }
    );
},