refactor: useRouteMeta & useTabMeta with getRouteMetaById

src/client/theme-api/useRouteMeta.ts

@@ -1,21 +1,41 @@
-import { matchRoutes, useAppData, useLocation, useRouteData } from 'dumi';
+import {
+  getRouteMetaById,
+  matchRoutes,
+  useAppData,
+  useLocation,
+  useRouteData,
+} from 'dumi';
 import { useCallback, useState } from 'react';
+import use from './context/use';
 import type { IRouteMeta } from './types';
 import { useIsomorphicLayoutEffect } from './utils';
 
+const cache = new Map<string, ReturnType<getRouteMetaById>>();
+
+const useAsyncRouteMeta = (id: string) => {
+  if (!cache.has(id)) {
+    cache.set(id, getRouteMetaById(id));
+  }
+
+  return use<ReturnType<getRouteMetaById>>(cache.get(id));
+};
+
 /**
  * hook for get matched route meta
  */
 export const useRouteMeta = () => {
   const { route } = useRouteData();
   const { pathname } = useLocation();
   const { clientRoutes } = useAppData();
+
+  const routeMeta = useAsyncRouteMeta(route.id);
+
   const getter = useCallback((): IRouteMeta => {
     let ret: IRouteMeta;
 
     if (route.path === pathname && !('isLayout' in route)) {
       // use `useRouteData` result if matched, for performance
-      ret = (route as any).meta;
+      ret = routeMeta;
     } else {
       // match manually for dynamic route & layout component
       const matched = matchRoutes(clientRoutes, pathname)?.pop();

src/client/theme-default/slots/ContentTabs/index.tsx

@@ -18,7 +18,6 @@ const ContentTabs: FC<IContentTabsProps> = ({
   const intl = useIntl();
 
   // TODO: tab.Extra & tab.Action render
-
   return Boolean(tabs?.length) ? (
     <ul className="dumi-default-content-tabs">
       <li onClick={() => onChange()} data-active={!key || undefined}>

src/features/exports.ts

@@ -17,7 +17,8 @@ export default (api: IApi) => {
       noPluginDir: true,
       path: 'dumi/exports.ts',
       content: `export * from '../exports';
-export * from '${winPath(require.resolve('../client/theme-api'))}';`,
+export * from '${winPath(require.resolve('../client/theme-api'))}';
+export { getRouteMetaById } from './meta/route-meta';`,
     });
   });
 };

src/features/meta.ts

@@ -66,14 +66,25 @@ export default (api: IApi) => {
     });
 
     // generate meta lazy entry
+    const mdFiles = parsedMetaFiles.filter((metaFile) =>
+      metaFile.file.endsWith('.md'),
+    );
+
     api.writeTmpFile({
       noPluginDir: true,
       path: 'dumi/meta/demos.ts',
       tplPath: winPath(join(TEMPLATES_DIR, 'meta-demos.ts.tpl')),
       context: {
-        metaFiles: parsedMetaFiles.filter((metaFile) =>
-          metaFile.file.endsWith('.md'),
-        ),
+        metaFiles: mdFiles,
+      },
+    });
+
+    api.writeTmpFile({
+      noPluginDir: true,
+      path: 'dumi/meta/route-meta.ts',
+      tplPath: winPath(join(TEMPLATES_DIR, 'meta-route.ts.tpl')),
+      context: {
+        metaFiles: mdFiles,
       },
     });
 

src/templates/meta-route.ts.tpl

@@ -0,0 +1,43 @@
+import { tabs } from './tabs';
+
+const files = {
+{{#metaFiles}}
+  '{{{id}}}': {
+    frontmatterGetter: () => import('{{{file}}}?type=frontmatter'),
+    textGetter: () => import('{{{file}}}?type=text'),
+    {{#tabs}}
+    tabs: {{{tabs}}},
+    {{/tabs}}
+  },
+{{/metaFiles}}
+};
+
+export const getRouteMetaById = async (id: string) => {
+  const file = files[id];
+
+  if (!file) {
+    return null;
+  }
+
+  const text = await file.textGetter();
+  const frontmatter = await file.frontmatterGetter();
+
+  const tabsMeta = file.tabs && await Promise.all(file.tabs.map(async (tab) => {
+    const meta = await getRouteMetaById(tab) ?? {
+      frontmatter: { title: tabs[tab].title },
+      toc: [],
+      texts: [],
+    };
+    return {
+      ...tabs[tab],
+      meta,
+    }
+  }));
+
+  return {
+    texts: text?.texts,
+    toc: text?.toc,
+    frontmatter: frontmatter?.frontmatter,
+    tabs: tabsMeta,
+  };
+}