import { Ref } from 'react'; type PossibleRef = Ref | undefined; declare function assignRef(ref: PossibleRef, value: T): void; declare function mergeRefs(...refs: PossibleRef[]): (node: T | null) => void; declare function useMergedRef(...refs: PossibleRef[]): (node: T | null) => void; export { assignRef, mergeRefs, useMergedRef };