minor clean up

Author: ivailop7

packages/lexical-playground/src/themes/PlaygroundEditorTheme.css

@@ -627,6 +627,7 @@
   scrollbar-width: none; /* Firefox */
   -ms-overflow-style: none; /* IE and Edge */
   width: 200px;
+  z-index: 4;
 }
 .PlaygroundEditorTheme__contextMenu button:first-child {
   border-radius: 8px 8px 0px 0px;

packages/lexical-react/flow/LexicalTypeaheadMenuPlugin.js.flow

@@ -36,11 +36,6 @@ declare export var SCROLL_TYPEAHEAD_OPTION_INTO_VIEW_COMMAND: LexicalCommand<{
   option: MenuOption,
 }>;
 
-declare export function getScrollParent(
-  element: HTMLElement,
-  includeHidden: boolean,
-): HTMLElement | HTMLBodyElement;
-
 declare export function useBasicTypeaheadTriggerMatch(
   trigger: string,
   options: {minLength?: number, maxLength?: number},

packages/lexical-react/src/LexicalTypeaheadMenuPlugin.tsx

@@ -107,37 +107,6 @@ function isSelectionOnEntityBoundary(
   });
 }
 
-// Got from https://stackoverflow.com/a/42543908/2013580
-export function getScrollParent(
-  element: HTMLElement,
-  includeHidden: boolean,
-): HTMLElement | HTMLBodyElement {
-  let style = getComputedStyle(element);
-  const excludeStaticParent = style.position === 'absolute';
-  const overflowRegex = includeHidden
-    ? /(auto|scroll|hidden)/
-    : /(auto|scroll)/;
-  if (style.position === 'fixed') {
-    return document.body;
-  }
-  for (
-    let parent: HTMLElement | null = element;
-    (parent = parent.parentElement);
-
-  ) {
-    style = getComputedStyle(parent);
-    if (excludeStaticParent && style.position === 'static') {
-      continue;
-    }
-    if (
-      overflowRegex.test(style.overflow + style.overflowY + style.overflowX)
-    ) {
-      return parent;
-    }
-  }
-  return document.body;
-}
-
 // export {useDynamicPositioning} from './shared/LexicalMenu';
 
 export const SCROLL_TYPEAHEAD_OPTION_INTO_VIEW_COMMAND: LexicalCommand<{