实现缓存功能

src/api/repository.ts

@@ -5,7 +5,12 @@ export async function search (keyword:string, page:number) {
   url.searchParams.append('q', keyword)
   url.searchParams.append('page', page.toString())
   const response = await fetch(url.toString(), { method: 'get' })
+
   const result = await response.json()
 
+  if (response.status >= 400) {
+    throw new Error(result.message)
+  }
+
   return result as RepositorySearchResultList
 }