fix: deepscan error (#733)

packages/app/src/components/editor/index.tsx

@@ -60,7 +60,7 @@ export const Editor = ({ page, workspace, setEditor }: Props) => {
     }
 
     setEditor(editor);
-    document.title = page?.meta.title || 'Untitled';
+    document.title = page.meta.title || 'Untitled';
     return ret;
   }, [workspace, page, setEditor]);
 

packages/app/src/pages/public-workspace/[workspaceId]/[pageId].tsx

@@ -25,7 +25,7 @@ const Page: NextPageWithLayout = () => {
               p => p.id === router.query.pageId
             )
           ) {
-            const page = data.blocksuiteWorkspace?.getPage(
+            const page = data.blocksuiteWorkspace.getPage(
               router.query.pageId as string
             );
             page && setPage(page);

packages/app/src/providers/app-state-provider/Provider.tsx

@@ -101,14 +101,15 @@ export const AppStateProvider = ({
     }
     const workspace = (await dataCenter.loadWorkspace(workspaceId)) ?? null;
     let isOwner;
-    if (workspace.provider === 'local') {
+    if (workspace?.provider === 'local') {
       // isOwner is useful only in the cloud
       isOwner = true;
     } else {
-      isOwner = workspace.owner && user?.id === workspace.owner.id;
+      // We must ensure workspace.owner exists, then ensure id same.
+      isOwner = workspace?.owner && user?.id === workspace.owner.id;
     }
     const pageList =
-      (workspace.blocksuiteWorkspace?.meta.pageMetas as PageMeta[]) ?? [];
+      (workspace?.blocksuiteWorkspace?.meta.pageMetas as PageMeta[]) ?? [];
     setAppState({
       ...appState,
       currentWorkspace: workspace,

packages/data-center/src/datacenter.ts

@@ -150,7 +150,9 @@ export class DataCenter {
    * @param {string} workspaceId workspace id
    * @returns {Promise<WorkspaceUnit>}
    */
-  public async loadWorkspace(workspaceId: string) {
+  public async loadWorkspace(
+    workspaceId: string
+  ): Promise<WorkspaceUnit | null> {
     const workspaceUnit = this._workspaceUnitCollection.find(workspaceId);
     assert(workspaceUnit, 'Workspace not found');
     const currentProvider = this.providerMap.get(workspaceUnit.provider);