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40 lines
939 B
JavaScript
40 lines
939 B
JavaScript
import { useMemo } from 'react';
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var toFnRef = function toFnRef(ref) {
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return !ref || typeof ref === 'function' ? ref : function (value) {
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ref.current = value;
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};
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};
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export function mergeRefs(refA, refB) {
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var a = toFnRef(refA);
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var b = toFnRef(refB);
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return function (value) {
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if (a) a(value);
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if (b) b(value);
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};
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}
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/**
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* Create and returns a single callback ref composed from two other Refs.
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*
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* ```tsx
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* const Button = React.forwardRef((props, ref) => {
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* const [element, attachRef] = useCallbackRef<HTMLButtonElement>();
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* const mergedRef = useMergedRefs(ref, attachRef);
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*
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* return <button ref={mergedRef} {...props}/>
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* })
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* ```
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*
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* @param refA A Callback or mutable Ref
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* @param refB A Callback or mutable Ref
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* @category refs
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*/
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function useMergedRefs(refA, refB) {
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return useMemo(function () {
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return mergeRefs(refA, refB);
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}, [refA, refB]);
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}
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export default useMergedRefs; |