extensions type 명시 제거 및 상수 export 추가

Author: guswl98

packages/fetcher/src/index.ts

@@ -11,6 +11,7 @@ export {
   handleGql401Error,
   NEED_REFRESH_IDENTIFIER,
   ACCESS_TOKEN_EXPIRED_EXCEPTION,
+  UNAUTHORIZED_CODE,
 } from './response-handler'
 export {
   sessionRefresh,

packages/fetcher/src/response-handler.ts

@@ -56,19 +56,11 @@ export async function handle401Error<SuccessBody, FailureBody>(
   return NEED_LOGIN_IDENTIFIER
 }
 
-const UNAUTHORIZED_CODE = 'UNAUTHORIZED'
-
-interface ErrorResponse401 {
-  status: number
-  code: string
-  sentryId: string
-}
+export const UNAUTHORIZED_CODE = 'UNAUTHORIZED'
 
 export function handleGql401Error(error: GraphQLError) {
-  if (error.extensions) {
-    const extensions = error.extensions as unknown as ErrorResponse401
-    if (extensions.code === UNAUTHORIZED_CODE) {
-      return NEED_LOGIN_IDENTIFIER
-    }
+  const { extensions } = error
+  if ('code' in extensions && extensions.code === UNAUTHORIZED_CODE) {
+    return NEED_LOGIN_IDENTIFIER
   }
 }