fix(birthdays): Gracefully handle partial source failures

1 files changed, 17 insertions, 2 deletions

diff --git a/src/lib/Data/Birthday/primary.ts b/src/lib/Data/Birthday/primary.ts
index 89a765bc..5f8ee1d0 100644
--- a/src/lib/Data/Birthday/primary.ts
+++ b/src/lib/Data/Birthday/primary.ts
@@ -5,8 +5,23 @@ export interface aniSearchBirthday {
   image: string;
 }
 
+const isAniSearchBirthday = (entry: unknown): entry is aniSearchBirthday =>
+  typeof entry === 'object' &&
+  entry !== null &&
+  typeof (entry as { name?: unknown }).name === 'string' &&
+  typeof (entry as { image?: unknown }).image === 'string';
+
 export const aniSearchBirthdays = async (
   month: number,
   day: number
-): Promise<aniSearchBirthday[]> =>
-  await (await fetch(root(`/api/birthdays/primary?month=${month}&day=${day}`), {})).json();
+): Promise<aniSearchBirthday[]> => {
+  const response = await fetch(root(`/api/birthdays/primary?month=${month}&day=${day}`), {});
+
+  if (!response.ok) throw new Error(`Primary birthdays request failed with ${response.status}.`);
+
+  const data: unknown = await response.json();
+
+  if (!Array.isArray(data)) throw new Error('Primary birthdays response was not an array.');
+
+  return data.filter(isAniSearchBirthday);
+};