fix: add context defaults

src/library-authoring/common/context/LibraryContext.tsx

@@ -19,7 +19,7 @@ export interface ComponentEditorInfo {
 
 export type LibraryContextData = {
   /** The ID of the current library */
-  libraryId: string;
+  libraryId?: undefined | string;
   libraryData?: ContentLibrary;
   readOnly: boolean;
   isLoadingLibraryData: boolean;
@@ -141,7 +141,20 @@ export function useLibraryContext(): LibraryContextData {
   const ctx = useContext(LibraryContext);
   if (ctx === undefined) {
     /* istanbul ignore next */
-    throw new Error('useLibraryContext() was used in a component without a <LibraryProvider> ancestor.');
+    return {
+      libraryId: undefined,
+      readOnly: true,
+      isLoadingLibraryData: false,
+      collectionId: undefined,
+      setCollectionId: () => {},
+      showOnlyPublished: false,
+      isCreateCollectionModalOpen: false,
+      openCreateCollectionModal: () => {},
+      closeCreateCollectionModal: () => {},
+      componentBeingEdited: undefined,
+      openComponentEditor: () => {},
+      closeComponentEditor: () => {},
+    };
   }
   return ctx;
 }

src/library-authoring/common/context/SidebarContext.tsx

@@ -158,7 +158,16 @@ export function useSidebarContext(): SidebarContextData {
   const ctx = useContext(SidebarContext);
   if (ctx === undefined) {
     /* istanbul ignore next */
-    throw new Error('useSidebarContext() was used in a component without a <SidebarProvider> ancestor.');
+    return {
+      closeLibrarySidebar: () => {},
+      openAddContentSidebar: () => {},
+      openInfoSidebar: () => {},
+      openComponentInfoSidebar: () => {},
+      openCollectionInfoSidebar: () => {},
+      resetSidebarAdditionalActions: () => {},
+      setSidebarCurrentTab: () => {},
+      sidebarComponentInfo: undefined,
+    };
   }
   return ctx;
 }