[C] Fix import lint error

Author: 1aurend

client/src/global/components/Overlay/index.js

@@ -3,7 +3,7 @@ import PropTypes from "prop-types";
 import { FocusTrap } from "focus-trap-react";
 import { useUID } from "react-uid";
 import Header from "./Header";
-import { closest } from "reader/containers/annotation/annotatable-components/selectionHelpers";
+import helpers from "reader/containers/annotation/annotatable-components/selectionHelpers";
 
 import BodyClass from "hoc/BodyClass";
 
@@ -26,7 +26,7 @@ function Overlay({
   const headerId = useUID();
 
   function handleCloseEvent(event) {
-    const dialog = closest(event.target, "dialog");
+    const dialog = helpers.closest(event.target, "dialog");
     if (dialog) return false;
 
     if (closeCallback) {

client/src/reader/containers/annotation/annotatable-components/selectionHelpers.js

@@ -5,7 +5,7 @@ import {
   findFirstMathUuidNode
 } from "./mathHelpers";
 
-export const closest = (el, selector) => {
+const closest = (el, selector) => {
   let element = el;
   const matchesSelector =
     element.matches ||