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[react] Require initial value for useRef
#64920
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[react] Require initial value for useRef
#64920
eps1lon
wants to merge
16
commits into
DefinitelyTyped:master
from
eps1lon:feat/react/useRef-required
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Implements https://twitter.com/dan_abramov/status/1640157848167489541
Stacked on #64896 (Diff against #64896)
useRef
now requires an explicit initial value. This is in line with documentation andcreateContext
Just like for
const current: T | null = useRef<T>(null).current
we'll have a convenience overload foruseRef<T>(undefined)
that ensuresref.current
will beT | undefined
.