Lodash throttle firing multiple times

I am using lodash throttle like this

const throttledFetch = _.throttle(fetch, 10000, { 'leading': false });

I need to trigger this upon a certain notification event I am getting from a ws. So the idea was, if I get 10 notifications at almost the same time, to have the fetch function fire only once at the wait of 10 seconds.

Instead, what is happening is that the fetch functions gets fired 10 times after the 10 second delay.

How can I fix this? I could use any other methods.

Any suggestion is welcome

Answer

Keep a counter for the invocation and check it for invoking only once.