callbacks onNext and onFinish dont seem to be firing.

[laurencefass]

I created a sandbox based on your own. I have added the callbacks but they dont seem to be firing,

https://codesandbox.io/s/react-ticker-no-callbacks-n7i0t

Also not really sure of the purpose of onFinish as it doesnt offer any arguments.

Thanks

[mariukhin]

@laurencefass because your data inside Ticker callback is infinite. There is no any final value after which onFinish and onNext callbacks will be called.
For example: create an array of 10 elements and render iе inside Ticker element callback using map