fix: fetchFromMultipleSources returns errorOccurred only if all sources fail

src/libs/fetchFromMultipleSources.ts

@@ -10,7 +10,7 @@ type OptionalArgs<T> =
 
 interface FetchFromMultipleSourcesResult<T> {
   result: T | null;
-  errors: (Error | string | undefined)[] | null;
+  errorOccurred: boolean;
 }
 
 export async function fetchFromMultipleSources<T>(
@@ -19,21 +19,21 @@ export async function fetchFromMultipleSources<T>(
 ): Promise<FetchFromMultipleSourcesResult<T>> {
   let result = await args?.fetchFromCache?.();
   if (result) {
-    return { result, errors: null };
+    return { result, errorOccurred: false };
   }
 
   if (fetchPromises.length === 0) {
     throw new Error("fetchPromises cannot be empty");
   }
 
-  let errors: Record<number, Error> = {};
+  let errorCount = 0;
   for (let i = 0; i < fetchPromises.length; i++) {
     const promise = fetchPromises[i];
     try {
       result = await promise();
       if (result) break;
     } catch (e) {
-      errors[i] = e as Error;
+      errorCount++;
     }
   }
 
@@ -44,7 +44,6 @@ export async function fetchFromMultipleSources<T>(
   result = result ?? null;
   return {
     result,
-    errors:
-      !result && Object.keys(errors).length > 0 ? Object.values(errors) : null,
+    errorOccurred: errorCount === fetchPromises.length,
   };
 }