improve graphql error handling

web/src/app/[...url]/page.tsx

@@ -51,12 +51,14 @@ export async function generateStaticParams() {
     }
   `);
   const { data, error } = await getClient().query(allGenericSlugsQuery, {});
-
+  if (error) {
-  if (data === undefined || error) {
+    throw new Error(error.message);
-    throw new Error("failed to generate static params");
+  }
+  if (!data?.pages) {
+    throw new Error("Failed to generate static params for generic subpages");
   }
 
-  return data?.pages.map((page: any) => {
+  return data.pages.map((page: any) => {
     // wagtail-grapple prepends the home page slug to the full path on multisite setups
     // we also strip the trailing slash
     const urlPath: string[] = page.urlPath
@@ -79,12 +81,14 @@ export async function generateMetadata(
     urlPath: urlPath,
   });
 
-  const page = (data?.page ?? []) as GenericFragment;
+  if (error) {
-
+    throw new Error(error.message);
-  if (!page) {
+  }
+  if (!data?.page) {
     return null;
   }
 
+  const page = data.page as GenericFragment;
   const metadata = await getSeoMetadata(page, parent);
   return metadata;
 }
@@ -95,13 +99,16 @@ export default async function Page({ params }: { params: { url: string[] } }) {
   const { data, error } = await getClient().query(genericPageByUrlPathQuery, {
     urlPath: urlPath,
   });
+  if (error) {
+    throw new Error(error.message);
+  }
 
-  const page = (data?.page ?? []) as GenericFragment;
+  if (!data?.page) {
-
-  if (!page) {
     return notFound();
   }
 
+  const page = data?.page as GenericFragment;
+
   return (
     <>
       <main className="site-main" id="main">

web/src/app/aktuelt/[slug]/page.tsx

@@ -30,11 +30,16 @@ export async function generateStaticParams() {
   `);
   const { data, error } = await getClient().query(allNewsSlugsQuery, {});
 
-  if (data === undefined || error) {
+  if (error) {
-    throw new Error("failed to generate static params");
+    throw new Error(error.message);
+  }
+  if (!data?.pages) {
+    throw new Error(
+      "Failed to generate static params for subpages of /aktuelt"
+    );
   }
 
-  return data?.pages.map((page: any) => ({
+  return data.pages.map((page: any) => ({
     slug: page.slug,
   }));
 }
@@ -46,12 +51,13 @@ export async function generateMetadata(
   const { data, error } = await getClient().query(newsBySlugQuery, {
     slug: params.slug,
   });
-  const news = (data?.news ?? []) as NewsFragment[];
+  if (error) {
-
+    throw new Error(error.message);
-  if (!news) {
+  }
+  if (!data?.news) {
     return null;
   }
-
+  const news = data.news as NewsFragment;
   const metadata = await getSeoMetadata(news, parent);
   return metadata;
 }
@@ -61,13 +67,15 @@ export default async function Page({ params }: { params: { slug: string } }) {
     slug: params.slug,
   });
 
-  if (data?.news === null || error) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.news) {
     return notFound();
   }
 
-  const news = (data?.news ?? {}) as NewsFragment;
+  const news = data?.news as NewsFragment;
   const featuredImage: any = news.featuredImage;
-
   return (
     <main className="site-main" id="main">
       <section className="news-header">

web/src/app/aktuelt/page.tsx

@@ -10,20 +10,25 @@ export async function generateMetadata(
   parent: ResolvingMetadata
 ): Promise<Metadata | null> {
   const { data, error } = await getClient().query(newsQuery, {});
-  const index = (data?.index ?? []) as NewsIndexFragment;
+  if (error) {
-
+    throw new Error(error.message);
-  if (!index) {
+  }
+  if (!data?.index) {
     return null;
   }
 
+  const index = data.index as NewsIndexFragment;
   const metadata = await getSeoMetadata(index, parent);
   return metadata;
 }
 
 export default async function Page() {
   const { data, error } = await getClient().query(newsQuery, {});
+  if (error) {
+    throw new Error(error.message);
+  }
   const news = (data?.news ?? []) as NewsFragment[];
-  const index = (data?.index ?? []) as NewsIndexFragment;
+  const index = data?.index as NewsIndexFragment;
 
   return (
     <main className="site-main" id="main">

web/src/app/arrangementer/[slug]/page.tsx

@@ -31,11 +31,16 @@ export async function generateStaticParams() {
   `);
   const { data, error } = await getClient().query(allEventSlugsQuery, {});
 
-  if (data === undefined || error) {
+  if (error) {
-    throw new Error("failed to generate static params");
+    throw new Error(error.message);
+  }
+  if (!data?.pages) {
+    throw new Error(
+      "Failed to generate static params for subpages of /arrangementer"
+    );
   }
 
-  return data?.pages.map((page: any) => ({
+  return data.pages.map((page: any) => ({
     slug: page.slug,
   }));
 }
@@ -47,12 +52,15 @@ export async function generateMetadata(
   const { data, error } = await getClient().query(eventBySlugQuery, {
     slug: params.slug,
   });
-  const event = (data?.event ?? []) as EventFragment[];
 
-  if (!event) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.event) {
     return null;
   }
 
+  const event = data.event as EventFragment;
   const metadata = await getSeoMetadata(event, parent);
   return metadata;
 }
@@ -62,11 +70,14 @@ export default async function Page({ params }: { params: { slug: string } }) {
     slug: params.slug,
   });
 
-  if (data?.event === null || error) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.event) {
     return notFound();
   }
 
-  const event = (data?.event ?? {}) as EventFragment;
+  const event = data.event as EventFragment;
   const eventPig = getEventPig(event);
 
   return (

web/src/app/arrangementer/page.tsx

@@ -18,19 +18,35 @@ export async function generateMetadata(
   parent: ResolvingMetadata
 ): Promise<Metadata | null> {
   const { data, error } = await getClient().query(eventIndexMetadataQuery, {});
-  const index = (data?.index ?? []) as EventIndexFragment;
 
-  if (!index) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.index) {
     return null;
   }
 
+  const index = data.index as EventIndexFragment;
   const metadata = await getSeoMetadata(index, parent);
   return metadata;
 }
 
 export default async function Page() {
   const { data, error } = await getClient().query(eventsOverviewQuery, {});
-  const index = (data?.index ?? []) as EventIndexFragment;
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (
+    !data?.index ||
+    !data?.events?.futureEvents ||
+    !data?.eventCategories ||
+    !data?.eventOrganizers ||
+    !data?.venues
+  ) {
+    throw new Error("Failed to render /arrangementer");
+  }
+
+  const index = data?.index as EventIndexFragment;
   const events = (data?.events?.futureEvents ?? []) as EventFragment[];
   const eventCategories = (data?.eventCategories ?? []) as EventCategory[];
   const eventOrganizers = (data?.eventOrganizers ?? []) as EventOrganizer[];

web/src/app/foreninger/[slug]/page.tsx

@@ -27,12 +27,15 @@ export async function generateMetadata(
   const { data, error } = await getClient().query(associationBySlugQuery, {
     slug: params.slug,
   });
-  const association = (data?.association ?? []) as AssociationFragment[];
 
-  if (!association) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.association) {
     return null;
   }
 
+  const association = data.association as AssociationFragment;
   const metadata = await getSeoMetadata(association, parent);
   return metadata;
 }
@@ -48,11 +51,16 @@ export async function generateStaticParams() {
   `);
   const { data, error } = await getClient().query(allAssociationSlugsQuery, {});
 
-  if (data === undefined || error) {
+  if (error) {
-    throw new Error("failed to generate static params");
+    throw new Error(error.message);
+  }
+  if (!data?.pages) {
+    throw new Error(
+      "Failed to generate static params for subpages of /foreninger"
+    );
   }
 
-  return data?.pages.map((page: any) => ({
+  return data.pages.map((page: any) => ({
     slug: page.slug,
   }));
 }
@@ -62,11 +70,14 @@ export default async function Page({ params }: { params: { slug: string } }) {
     slug: params.slug,
   });
 
-  if (data?.association === null || error) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.association) {
     return notFound();
   }
 
-  const association = (data?.association ?? {}) as AssociationFragment;
+  const association = data.association as AssociationFragment;
 
   return (
     <main className="site-main" id="main">

web/src/app/foreninger/page.tsx

@@ -30,12 +30,15 @@ export async function generateMetadata(
   parent: ResolvingMetadata
 ): Promise<Metadata | null> {
   const { data, error } = await getClient().query(allAssociationsQuery, {});
-  const index = (data?.index ?? []) as AssociationIndexFragment;
 
-  if (!index) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.index) {
     return null;
   }
 
+  const index = data.index as AssociationIndexFragment;
   const metadata = await getSeoMetadata(index, parent);
   return metadata;
 }
@@ -79,8 +82,16 @@ const AssociationFragmentDefinition = graphql(`
 
 export default async function Page() {
   const { data, error } = await getClient().query(allAssociationsQuery, {});
-  const associations = (data?.associations ?? []) as AssociationFragment[];
+
-  const index = (data?.index ?? []) as AssociationIndexFragment;
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.associations || !data.index) {
+    throw new Error("Failed to render /foreninger");
+  }
+
+  const associations = data.associations as AssociationFragment[];
+  const index = data.index as AssociationIndexFragment;
 
   return (
     <main className="site-main" id="main">

web/src/app/kontakt/page.tsx

@@ -1,4 +1,5 @@
 import { Metadata, ResolvingMetadata } from "next";
+import { notFound } from "next/navigation";
 import { graphql } from "@/gql";
 import { ContactIndexFragment } from "@/gql/graphql";
 import { getClient } from "@/app/client";
@@ -36,19 +37,30 @@ export async function generateMetadata(
   parent: ResolvingMetadata
 ): Promise<Metadata | null> {
   const { data, error } = await getClient().query(contactQuery, {});
-  const index = (data?.index ?? []) as ContactIndexFragment;
 
-  if (!index) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.index) {
     return null;
   }
 
+  const index = data.index as ContactIndexFragment;
   const metadata = await getSeoMetadata(index, parent);
   return metadata;
 }
 
 export default async function Page() {
   const { data, error } = await getClient().query(contactQuery, {});
-  const index = (data?.index ?? []) as ContactIndexFragment;
+
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.index) {
+    return notFound();
+  }
+
+  const index = data.index as ContactIndexFragment;
 
   return (
     <main className="site-main" id="main">

web/src/app/lokaler/[slug]/page.tsx

@@ -27,12 +27,15 @@ export async function generateMetadata(
   const { data, error } = await getClient().query(venueBySlugQuery, {
     slug: params.slug,
   });
-  const venue = (data?.venue ?? []) as VenueFragment[];
 
-  if (!venue) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.venue) {
     return null;
   }
 
+  const venue = data.venue as VenueFragment;
   const metadata = await getSeoMetadata(venue, parent);
   return metadata;
 }
@@ -48,11 +51,16 @@ export async function generateStaticParams() {
   `);
   const { data, error } = await getClient().query(allVenueSlugsQuery, {});
 
-  if (data === undefined || error) {
+  if (error) {
-    throw new Error("failed to generate static params");
+    throw new Error(error.message);
+  }
+  if (!data?.pages) {
+    throw new Error(
+      "Failed to generate static params for subpages of /lokaler"
+    );
   }
 
-  return data?.pages.map((page: any) => ({
+  return data.pages.map((page: any) => ({
     slug: page.slug,
   }));
 }
@@ -62,11 +70,14 @@ export default async function Page({ params }: { params: { slug: string } }) {
     slug: params.slug,
   });
 
-  if (data?.venue === null || error) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.venue) {
     return notFound();
   }
 
-  const venue = (data?.venue ?? {}) as VenueFragment;
+  const venue = data.venue as VenueFragment;
   const featuredImage: any = venue.featuredImage;
 
   return (

web/src/app/lokaler/page.tsx

@@ -74,19 +74,30 @@ export async function generateMetadata(
   parent: ResolvingMetadata
 ): Promise<Metadata | null> {
   const { data, error } = await getClient().query(venueIndexQuery, {});
-  const index = (data?.index ?? []) as VenueIndexFragment;
 
-  if (!index) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.index) {
     return null;
   }
 
+  const index = (data?.index ?? []) as VenueIndexFragment;
   const metadata = await getSeoMetadata(index, parent);
   return metadata;
 }
 
 export default async function Page() {
   const { data, error } = await getClient().query(venueIndexQuery, {});
-  const index = (data?.index ?? []) as VenueIndexFragment;
+
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.index || !data?.venues) {
+    throw new Error("Failed to render /lokaler");
+  }
+
+  const index = data.index as VenueIndexFragment;
   const venues = (data?.venues ?? []) as VenueFragment[];
   const visibleVenues = venues.filter((x) => x.showInOverview);
 

web/src/app/utleie/page.tsx

@@ -42,19 +42,30 @@ export async function generateMetadata(
   parent: ResolvingMetadata
 ): Promise<Metadata | null> {
   const { data, error } = await getClient().query(venueRentalIndexQuery, {});
-  const index = (data?.index ?? []) as VenueRentalIndexFragment;
 
-  if (!index) {
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.index) {
     return null;
   }
 
+  const index = data.index as VenueRentalIndexFragment;
   const metadata = await getSeoMetadata(index, parent);
   return metadata;
 }
 
 export default async function Page() {
   const { data, error } = await getClient().query(venueRentalIndexQuery, {});
-  const index = (data?.index ?? []) as VenueRentalIndexFragment;
+
+  if (error) {
+    throw new Error(error.message);
+  }
+  if (!data?.index || !data?.venues) {
+    throw new Error("Failed to render /utleie");
+  }
+
+  const index = data.index as VenueRentalIndexFragment;
   const venues = (data?.venues ?? []) as VenueFragment[];
   const bookableVenues = venues.filter((venue) => venue.showAsBookable);