These docs are for an old release. Info on upgrading to v4
edit doc

Docs TypeScript Support

It is possible to use FullCalendar and Scheduler with TypeScript, a type-aware superset of the JavaScript language that compiles down to JavaScript. TypeScript is great for the maintainability of large JavaScript projects, however, it is probably overkill for smaller projects. Learn more about TypeScript »

As of FullCalendar version 3.8.2 and Scheduler version 1.9.2, the TypeScript definition files come bundled when you npm install these libs. However, jQuery, which is unfortunately still a dependency of FullCalendar, does not come bundled with TypeScript definitions, so you must install them like this:

$ npm install --save-dev @types/jquery

You will then need to set up some sort of build system that compiles TypeScript to JavaScript. You can use the tsc compiler directly or you can use a more sophisticated system like Webpack.

Once you have your build system set up, you can begin to write type-aware code like this:

example.ts:

import * as $ from 'jquery';
import 'fullcalendar';

$(function() {
  let containerEl: JQuery = $('#calendar');

  containerEl.fullCalendar({
    // options here
  });
});