function isTouchDevice() {
	if ( !IS_BROWSER ) {
		return false;
	}
	return !!(
		'ontouchstart' in Global ||
		(
			Global.DocumentTouch &&
			Global.document &&
			Global.document instanceof Global.DocumentTouch
		) ||
		(
			Global.navigator &&
			(
				Global.navigator.maxTouchPoints > 0 ||
				Global.navigator.msMaxTouchPoints > 0
			)
		)
	);
}
Returns a boolean indicating if an environment is a touch device.

@private
@returns {boolean} boolean indicating if an environment is a touch-enabled environment