TypeScript Version: 2.2.1

Code

const event = new TouchEvent('touchstart', {ctrlKey: true});

Expected behavior:

No error. As per MDN

Actual behavior:
The TouchEvent constructor in lib.d.ts is defined to not accept parameters.

Stack Overflow question about this: How to manually trigger a Touch event in TypeScript?

Note:
I already have a PR ready for the fix, based on the same MDN article.