ivt
Version:
Ivt Components Library
41 lines (38 loc) • 1.18 kB
JavaScript
import * as React from 'react';
// packages/react/compose-refs/src/compose-refs.tsx
function setRef(ref, value) {
if (typeof ref === "function") {
return ref(value);
} else if (ref !== null && ref !== void 0) {
ref.current = value;
}
}
function composeRefs(...refs) {
return (node)=>{
let hasCleanup = false;
const cleanups = refs.map((ref)=>{
const cleanup = setRef(ref, node);
if (!hasCleanup && typeof cleanup == "function") {
hasCleanup = true;
}
return cleanup;
});
if (hasCleanup) {
return ()=>{
for(let i = 0; i < cleanups.length; i++){
const cleanup = cleanups[i];
if (typeof cleanup == "function") {
cleanup();
} else {
setRef(refs[i], null);
}
}
};
}
};
}
function useComposedRefs(...refs) {
return React.useCallback(composeRefs(...refs), refs);
}
export { composeRefs as c, useComposedRefs as u };
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