On: Making SetInterval Declarative with React Hooks

[panic]

Resetting the interval when the delay changes is probably not what you want either -- quickly changing the delay (even a little bit) won't give the timer a chance to fire. It would be better to compute a deadline internally, then move the deadline forward or backward according to how much the delay changed since the last call.

[danabramov → panic]

Good thing something like useInterval() can abstract these implementation details away so it can be made more precise with time. :-)

[zurfyx → panic]

A setInterval/setTimeout can only be cleared (clearInterval/clearTimeout). Modifications have to pushed through clear -> set.