The NHL (I don't follow the NBA) are paying close attention to it. They're not acting yet, but likely the pre-season games in China (like they've played for the last 2 out of 3 years) won't go ahead. They've got several plans in case it impacts the tail-end of the season or the playoffs (including playing in empty arenas).

The IIHF just cancelled a few international tournaments, and while not actually linked to the NHL, would have undoubtably had an impact on how the NHL is assessing its situation.