docs: added js docs for useIsMountedRef hook

Author: vishalnarkhede

package/src/hooks/useIsMountedRef.ts

@@ -1,5 +1,23 @@
 import { useEffect, useRef } from 'react';
 
+/**
+ * Returns mount status of component. This hook can be used for purpose of avoiding any
+ * setState calls (within async operation) after component gets unmounted.
+ *
+ * @example
+ * ```
+ * const isMounted = useIsMountedRef();
+ * const [dummyValue, setDummyValue] = useState(false);
+ *
+ * useEffect(() => {
+ *  someAsyncOperation().then(() => {
+ *    if (isMounted.current) setDummyValue(true);
+ *  })
+ * })
+ * ```
+ *
+ * @returns isMounted {Object} Mount status ref for the component.
+ */
 export const useIsMountedRef = () => {
   // Initial value has been set to true, since this hook exist only for sole purpose of
   // avoiding any setState calls (within async operation) after component gets unmounted.