title: Uncaught ReferenceError: Tooltip is not defined
body: <p>I am using Full Calendar v5.3.2 in my rails application Rails version 4.2.11.
  on initializing tooltip in <code>eventDidMount</code> i am getting an error of <strong>Tooltip is not defined</strong></p>
  <p>I am using bootstrap.bundle in my project so I think I don't need popper.js for tooltip but I have already tried adding popper.js in the project but the error was the same.</p>
  <p>Here is the code I am using to initialize the calendar</p>
  <pre><code>var calendarEl = document.getElementById('full_calendar');
      calendar = new FullCalendar.Calendar(calendarEl, {
        initialView: 'dayGridMonth',
        displayEventTime: false,
        eventDidMount: function(info) {
          var tooltip = new Tooltip(info.el, {
            title: info.event.extendedProps.description,
            placement: 'top',
            trigger: 'hover',
            container: 'body'
          });
        }
      });
  </code></pre>
  <p>Error Details:</p>
  <blockquote>
  <p>Uncaught ReferenceError: Tooltip is not defined at eventDidMount
  (calender:1560) at t.componentDidMount
  (main.min.self368cb59d5bfd4af3ab7b619eedaad5661cfc37245ac94224bed5714f0e5e4a5f.js?body=1:7)
  at
  main.min.self-368cb59d5bfd4af3ab7b619eedaad5661cfc37245ac94224bed5714f0e5e4a5f.js?body=1:7
  at Array.some () at
  main.min.self-368cb59d5bfd4af3ab7b619eedaad5661cfc37245ac94224bed5714f0e5e4a5f.js?body=1:7
  at Array.some () at I
  (main.min.self-368cb59d5bfd4af3ab7b619eedaad5661cfc37245ac94224bed5714f0e5e4a5f.js?body=1:7)
  at
  main.min.self-368cb59d5bfd4af3ab7b619eedaad5661cfc37245ac94224bed5714f0e5e4a5f.js?body=1:7
  at Array.some () at w
  (main.min.self-368cb59d5bfd4af3ab7b619eedaad5661cfc37245ac94224bed5714f0e5e4a5f.js?body=1:7)</p>
  </blockquote>