add exports

Signed-off-by: Karl Haworth <karl.haworth@aa.com>

plugins/apollo-explorer/src/components/ApolloExplorerPage/ApolloExplorerPage.tsx

@@ -41,7 +41,12 @@ export type EndpointProps = {
   };
 };
 
-export type authCallback = (options: {
+/**
+ * Export types to be used with {@link @backstage/apollo-explorer#ApolloExplorerPage}.
+ *
+ * @public
+ */
+export type AuthCallback = (options: {
   apiHolder: ApiHolder;
 }) => Promise<string>;
 
@@ -49,7 +54,7 @@ type Props = {
   title?: string | undefined;
   subtitle?: string | undefined;
   endpoints: EndpointProps[];
-  authCallback: authCallback;
+  authCallback?: AuthCallback;
 };
 
 export const ApolloExplorerPage = (props: Props) => {
@@ -63,7 +68,9 @@ export const ApolloExplorerPage = (props: Props) => {
       <Content noPadding>
         <ApolloExplorerBrowser
           endpoints={endpoints}
-          authCallback={() => authCallback({ apiHolder })}
+          authCallback={
+            authCallback ? () => authCallback({ apiHolder }) : undefined
+          }
         />
       </Content>
     </Page>

plugins/apollo-explorer/src/components/ApolloExplorerPage/index.ts

@@ -14,4 +14,4 @@
  * limitations under the License.
  */
 export { ApolloExplorerPage } from './ApolloExplorerPage';
-export type { EndpointProps } from './ApolloExplorerPage';
+export type { EndpointProps, AuthCallback } from './ApolloExplorerPage';

plugins/apollo-explorer/src/index.ts

@@ -20,4 +20,7 @@
  * @packageDocumentation
  */
 export { apolloExplorerPlugin, ApolloExplorerPage } from './plugin';
-export type { EndpointProps } from './components/ApolloExplorerPage';
+export type {
+  EndpointProps,
+  AuthCallback,
+} from './components/ApolloExplorerPage';