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import type * as React from 'react'
/**
* A function that merges React refs into one.
* Supports both functions and ref objects created using createRef() and useRef().
*
* Usage:
* ```tsx
* <div ref={mergeRefs(ref1, ref2, ref3)} />
* ```
*
* @param inputRefs Array of refs
* @returns Merged refs
*/
export default function mergeRefs<T>(
...inputRefs: (React.Ref<T> | undefined)[]
): React.Ref<T> | React.RefCallback<T> {
const filteredInputRefs = inputRefs.filter(Boolean)
if (filteredInputRefs.length <= 1) {
const firstRef = filteredInputRefs[0]
return firstRef || null
}
return function mergedRefs(ref) {
for (const inputRef of filteredInputRefs) {
if (typeof inputRef === 'function') {
inputRef(ref)
} else if (inputRef) {
;(inputRef as React.MutableRefObject<T | null>).current = ref
}
}
}
}
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