1import React from "react";
 2
 3type PossibleRef<T> = React.Ref<T> | undefined;
 4
 5/**
 6 * Set a given ref to a given value
 7 * This utility takes care of different types of refs: callback refs and RefObject(s)
 8 */
 9function setRef<T>(ref: PossibleRef<T>, value: T) {
10    if (typeof ref === "function") {
11        ref(value);
12    } else if (ref !== null && ref !== undefined) {
13        (ref as React.MutableRefObject<T>).current = value;
14    }
15}
16
17/**
18 * A utility to compose multiple refs together
19 * Accepts callback refs and RefObject(s)
20 */
21function composeRefs<T>(...refs: PossibleRef<T>[]) {
22    return (node: T) => {
23        refs.forEach((ref) => setRef(ref, node));
24    };
25}
26
27/**
28 * A custom hook that composes multiple refs
29 * Accepts callback refs and RefObject(s)
30 */
31function useComposedRefs<T>(...refs: PossibleRef<T>[]) {
32    return React.useCallback((node: T) => {
33        refs.forEach((ref) => setRef(ref, node));
34    }, [refs]);
35}
36
37export { composeRefs, useComposedRefs };