fix:added fix for TOC

packages/elements-core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@stoplight/elements-core",
-  "version": "9.0.13",
+  "version": "9.0.14",
   "sideEffects": [
     "web-components.min.js",
     "src/web-components/**",

packages/elements-core/src/components/TableOfContents/TableOfContents.tsx

@@ -84,6 +84,49 @@ export const TableOfContents = React.memo<TableOfContentsProps>(
     }, []);
     const updatedTree = updateTocTree(tree, '');
 
+    const findFirstMatchAndIndexMatch = React.useCallback(
+      (items: TableOfContentsGroupItem[], id: string | undefined): [TableOfContentsGroupItem | undefined, boolean] => {
+        let firstMatch: TableOfContentsGroupItem | undefined;
+        let hasAnyLastIndexMatch = false;
+        if (!id) return [firstMatch, hasAnyLastIndexMatch];
+
+        const walk = (arr: TableOfContentsGroupItem[], stack: TableOfContentsGroupItem[]): boolean => {
+          for (const itm of arr) {
+            const newStack = stack.concat(itm);
+
+            const matches = ('slug' in itm && (itm as any).slug === id) || ('id' in itm && (itm as any).id === id);
+            if (matches) {
+              if (!firstMatch) firstMatch = itm;
+              const hasLastIndexMatch = newStack.some(el => 'index' in el && (el as any).index === lastActiveIndex);
+              if (hasLastIndexMatch) hasAnyLastIndexMatch = true;
+            }
+
+            if ('items' in itm && Array.isArray((itm as any).items)) {
+              if (walk((itm as any).items, newStack)) return true;
+            }
+          }
+
+          return false;
+        };
+
+        walk(items, []);
+        return [firstMatch, hasAnyLastIndexMatch];
+      },
+      [lastActiveIndex],
+    );
+
+    const [firstMatchItem, hasAnyLastIndexMatch] = React.useMemo(
+      () => findFirstMatchAndIndexMatch(updatedTree, activeId),
+      [updatedTree, activeId, findFirstMatchAndIndexMatch],
+    );
+
+    React.useEffect(() => {
+      if (!hasAnyLastIndexMatch && firstMatchItem && 'index' in firstMatchItem && firstMatchItem.index) {
+        setLastActiveIndex(firstMatchItem.index);
+      }
+      // eslint-disable-next-line react-hooks/exhaustive-deps
+    }, [firstMatchItem, hasAnyLastIndexMatch]);
+
     const container = React.useRef<HTMLDivElement>(null);
     const child = React.useRef<HTMLDivElement>(null);
     const firstRender = useFirstRender();

packages/elements-dev-portal/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@stoplight/elements-dev-portal",
-  "version": "3.0.13",
+  "version": "3.0.14",
   "description": "UI components for composing beautiful developer documentation.",
   "keywords": [],
   "sideEffects": [
@@ -66,7 +66,7 @@
   "dependencies": {
     "@stoplight/markdown-viewer": "^5.7.1",
     "@stoplight/mosaic": "^1.53.5",
-    "@stoplight/elements-core": "~9.0.13",
+    "@stoplight/elements-core": "~9.0.14",
     "@stoplight/path": "^1.3.2",
     "@stoplight/types": "^14.0.0",
     "classnames": "^2.2.6",

packages/elements-dev-portal/src/version.ts

@@ -1,2 +1,2 @@
 // auto-updated during build
-export const appVersion = '3.0.10';
+export const appVersion = '3.0.14';

packages/elements/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@stoplight/elements",
-  "version": "9.0.13",
+  "version": "9.0.14",
   "description": "UI components for composing beautiful developer documentation.",
   "keywords": [],
   "sideEffects": [
@@ -63,7 +63,7 @@
     ]
   },
   "dependencies": {
-    "@stoplight/elements-core": "~9.0.13",
+    "@stoplight/elements-core": "~9.0.14",
     "@stoplight/http-spec": "^7.1.0",
     "@stoplight/json": "^3.18.1",
     "@stoplight/mosaic": "^1.53.5",