meetingapp.tsx

import * as microsoftTeams from "@microsoft/teams-js";

useEffect(() => {

    microsoftTeams.initialize();

    microsoftTeams.getContext(async function (context: microsoftTeams.Context) {

      const rawResponse = await fetch(`/Meeting?userId=${context.userObjectId}&meetingId=${context.meetingId}&tenantId=${context.tid}`, {
          method: 'GET',
          headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json'
          }
        });
    });

}, []);