merge new into master

node_modules/use-callback-ref/dist/es2015/useMergeRef.d.ts

@@ -0,0 +1,17 @@
+import * as React from 'react';
+import { ReactRef } from './types';
+/**
+ * Merges two or more refs together providing a single interface to set their value
+ * @param {RefObject|Ref} refs
+ * @returns {MutableRefObject} - a new ref, which translates all changes to {refs}
+ *
+ * @see {@link mergeRefs} a version without buit-in memoization
+ * @see https://github.com/theKashey/use-callback-ref#usemergerefs
+ * @example
+ * const Component = React.forwardRef((props, ref) => {
+ *   const ownRef = useRef();
+ *   const domRef = useMergeRefs([ref, ownRef]); // 👈 merge together
+ *   return <div ref={domRef}>...</div>
+ * }
+ */
+export declare function useMergeRefs<T>(refs: ReactRef<T>[], defaultValue?: T): React.MutableRefObject<T | null>;