import { type LegacyRef, type MutableRefObject, type Ref, type RefCallback } from 'react';
/**
 * Merge multiple react refs into a single ref callback.
 * This can be used to merge callback and object refs into a single ref.
 * Merged callback refs will be called while object refs will have their current property set.
 * @param refs The refs to merge
 * @returns A ref callback that will set the value on all refs
 */
export declare function mergeRefs<T = unknown>(...refs: readonly (MutableRefObject<T> | LegacyRef<T> | null | undefined)[]): RefCallback<T>;
/**
 * Merges multiple refs into one ref that can be assigned to the component.
 * In turn all the refs passed in will be assigned when the ref returned is assigned.
 * @param refs Array of refs to assign
 */
export declare function useMergeRef<T>(...refs: readonly Ref<T>[]): RefCallback<T>;
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