> whereas the new docs say it’s used to “sync” components (and I don’t remember if it explicitly says not to use it for side effects, but that’s the common unde

> whereas the new docs say it’s used to “sync” components (and I don’t remember if it explicitly says not to use it for side effects, but that’s the common understanding people have now). other way around. useEffect is for side effects (hence the name) and are _not_ needed for "syncing" state with props.