Hi Jaya,
Under the current entry requirements, you are still required to have an ESTA.
I have taken the following from the US customs & Border protection website (https://esta.cbp.dhs.gov/esta/application.html?execution=e2s1):
Do I still need and ESTA if I am a citizen of a VWP country and am traveling to the United States by air to transit the U.S.?
Yes. You must apply for ESTA even if you are only transiting the U.S. In the address field of the application, write "In Transit."
Hope this helps.
Kindest regards,
Julia