@navikt/ds-react
Version:
React components from the Norwegian Labour and Welfare Administration.
23 lines (22 loc) • 1.07 kB
TypeScript
import React from "react";
type RefCallback<T> = (instance: T | null) => void;
type Empty = null | undefined;
type InputRef<I> = React.Ref<I> | Empty;
type Result<I> = RefCallback<I> | null;
/**
* Merges refs into a single memoized callback ref or `null`.
* This makes sure multiple refs are updated together and have the same value.
*
* This function accepts up to four refs. If you need to merge more, or have an unspecified number of refs to merge,
* use `useMergeRefsN` instead.
*/
export declare function useMergeRefs<I>(a: InputRef<I>, b: InputRef<I>): Result<I>;
export declare function useMergeRefs<I>(a: InputRef<I>, b: InputRef<I>, c: InputRef<I>): Result<I>;
export declare function useMergeRefs<I>(a: InputRef<I>, b: InputRef<I>, c: InputRef<I>, d: InputRef<I>): Result<I>;
/**
* Merges an array of refs into a single memoized callback ref or `null`.
*
* If you need to merge a fixed number (up to four) of refs, use `useMergeRefs` instead for better performance.
*/
export declare function useMergeRefsN<I>(refs: InputRef<I>[]): Result<I>;
export {};