bc518174
 王天杨
提交两个项目文件
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import { assignRef } from './assignRef';
import { useCallbackRef } from './useRef';
/**
* Create a _lense_ on Ref, making it possible to transform ref value
* @param {ReactRef} ref
* @param {Function} transformer. 👉 Ref would be __NOT updated__ on `transformer` update.
* @returns {RefObject}
*
* @see https://github.com/theKashey/use-callback-ref#usetransformref-to-replace-reactuseimperativehandle
* @example
*
* const ResizableWithRef = forwardRef((props, ref) =>
* <Resizable {...props} ref={useTransformRef(ref, i => i ? i.resizable : null)}/>
* );
*/
export function useTransformRef(ref, transformer) {
return useCallbackRef(null, function (value) { return assignRef(ref, transformer(value)); });
}
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