gtag-helper

import GtagHelper from 'gtag-helper';

const gtag = new GtagHelper(options.GA_MEASUREMENT_ID, { noInit: true });

const options: GtagConfigOptions = {
  send_page_view: true;
  page_path: YOUR_PATH;
}

gtag.config(options);
// you can easily add this to your SPA router changed event.
gtag.pageView();