feat: add wishlist

layers/diary/app/utils/errors.ts

@@ -0,0 +1,10 @@
+interface FetchErrorLike {
+  data?: { statusMessage?: string }
+  statusMessage?: string
+  message?: string
+}
+
+export function errorMessage(error: unknown): string | undefined {
+  const e = error as FetchErrorLike | null
+  return e?.data?.statusMessage || e?.statusMessage || e?.message
+}