feat: add support for icons in tabs

.changeset/long-wombats-raise.md

@@ -0,0 +1,5 @@
+---
+"gitbook": patch
+---
+
+Add icon support in tab items

package.json

@@ -43,7 +43,7 @@
         "catalog": {
             "@tsconfig/strictest": "^2.0.6",
             "@tsconfig/node20": "^20.1.6",
-            "@gitbook/api": "0.181.0",
+            "@gitbook/api": "0.182.0",
             "@scalar/api-client-react": "^1.3.46",
             "@types/react": "^19.0.0",
             "@types/react-dom": "^19.0.0",

packages/gitbook/src/components/DocumentView/Tabs/DynamicTabs.tsx

@@ -15,7 +15,7 @@ import { useLanguage } from '@/intl/client';
 import { tString } from '@/intl/translate';
 import { getLocalStorageItem, setLocalStorageItem } from '@/lib/browser';
 import { tcls } from '@/lib/tailwind';
-import { Icon } from '@gitbook/icons';
+import { Icon, type IconName } from '@gitbook/icons';
 import { useRouter } from 'next/navigation';
 
 interface TabsState {
@@ -56,6 +56,7 @@ const TITLES_MAX = 5;
 export interface TabsItem {
     id: string;
     title: string;
+    icon?: IconName;
     body: React.ReactNode;
 }
 
@@ -319,6 +320,7 @@ function TabsDropdownMenu(props: {
                         key={tab.id}
                         onClick={() => onSelect(tab.id)}
                         active={tab.id === activeTabId}
+                        leadingIcon={tab.icon}
                     >
                         {tab.title}
                     </DropdownMenuItem>
@@ -347,7 +349,8 @@ const TabItem = memo(function TabItem(props: {
             id={getTabButtonId(tab.id)}
             onClick={() => onSelect(tab.id)}
         >
-            {tab.title}
+            {tab.icon && <Icon icon={tab.icon} className="size-4 shrink-0" />}
+            <span className="min-w-0 truncate">{tab.title}</span>
         </TabButton>
     );
 });
@@ -411,7 +414,7 @@ function TabButton(
                 {...rest}
                 type="button"
                 className={tcls(
-                    'relative inline-block max-w-full truncate px-3.5 py-2 font-medium text-sm transition-[color]',
+                    'relative inline-flex max-w-full items-center gap-1.5 px-3.5 py-2 font-medium text-sm transition-[color]',
                     props.className
                 )}
             />

packages/gitbook/src/components/DocumentView/Tabs/Tabs.tsx

@@ -1,4 +1,6 @@
 import type { DocumentBlockTabs } from '@gitbook/api';
+import type { IconName } from '@gitbook/icons';
+import { validateIconName } from '@gitbook/icons/icons';
 
 import { tcls } from '@/lib/tailwind';
 
@@ -20,9 +22,13 @@ export function Tabs(props: BlockProps<DocumentBlockTabs>) {
             throw new Error('Tab block is missing a key');
         }
 
+        const icon: IconName | undefined =
+            tab.data.icon && validateIconName(tab.data.icon) ? tab.data.icon : undefined;
+
         return {
             id: tab.meta?.id ?? tab.key,
             title: tab.data.title ?? '',
+            icon,
             body: (
                 <Blocks
                     key={tab.key}

packages/gitbook/src/components/PageBody/PageHeader.tsx

@@ -27,7 +27,6 @@ export async function PageHeader(props: {
 
     const hasAncestors = ancestors.length > 0;
 
-    // @ts-expect-error available in next API update
     const pageActionsEnabled = page.layout.actions !== false;
 
     // Show page actions if *any* of the actions are enabled

packages/gitbook/src/lib/icons/inline.ts

@@ -358,7 +358,7 @@ function collectDocumentIconSourceRequests(
 
     const record = node as Record<string, unknown>;
 
-    if (record.type === 'icon' || record.type === 'button') {
+    if (record.type === 'icon' || record.type === 'button' || record.type === 'tabs-item') {
         const data = record.data;
         if (data && typeof data === 'object') {
             addIconSourceRequest(requests, (data as Record<string, unknown>).icon, iconStyle);

packages/gitbook/src/lib/pages.test.ts

@@ -85,6 +85,7 @@ describe('resolveFirstDocument', () => {
                             width: RevisionPageLayoutOptionsWidth.Default,
                             metadata: true,
                             tags: true,
+                            actions: true,
                         },
                     },
                 ],
@@ -137,6 +138,7 @@ describe('resolveFirstDocument', () => {
                     width: RevisionPageLayoutOptionsWidth.Default,
                     metadata: true,
                     tags: true,
+                    actions: true,
                 },
             },
         ];
@@ -182,6 +184,7 @@ describe('resolvePagePath', () => {
                     width: RevisionPageLayoutOptionsWidth.Default,
                     metadata: true,
                     tags: true,
+                    actions: true,
                 },
             },
         ];
@@ -257,6 +260,7 @@ describe('resolvePagePath', () => {
                             width: RevisionPageLayoutOptionsWidth.Default,
                             metadata: true,
                             tags: true,
+                            actions: true,
                         },
                     },
                 ],
@@ -374,6 +378,7 @@ function createDocumentPage(id: string, path: string, hidden = false): RevisionP
             width: RevisionPageLayoutOptionsWidth.Default,
             metadata: true,
             tags: true,
+            actions: true,
         },
     };
 }