useimperativehandle typescript
type CountdownProps = {}
type CountdownHandle = {
start: () => void,
}
const Countdown: React.ForwardRefRenderFunction<CountdownHandle, CountdownProps> = (
props,
forwardedRef,
) => {
React.useImperativeHandle(forwardedRef, ()=>({
start() {
alert('Start');
}
});
return <div>Countdown</div>;
}
export default React.forwardRef(Countdown);