Improve default parameter naming for Interceptor

dio/README-ZH.md

@@ -447,9 +447,9 @@ dio.interceptors.add(
       // 如果你想终止请求并触发一个错误，你可以使用 `handler.reject(error)`。
       return handler.next(response);
     },
-    onError: (DioException e, ErrorInterceptorHandler handler) {
+    onError: (DioException err, ErrorInterceptorHandler handler) {
       // 如果你想完成请求并返回一些自定义数据，你可以使用 `handler.resolve(response)`。
-      return handler.next(e);
+      return handler.next(err);
     },
   ),
 );

dio/README.md

@@ -450,11 +450,11 @@ dio.interceptors.add(
       // you can reject a `DioException` object using `handler.reject(dioError)`.
       return handler.next(response);
     },
-    onError: (DioException e, ErrorInterceptorHandler handler) {
+    onError: (DioException err, ErrorInterceptorHandler handler) {
       // Do something with response error.
       // If you want to resolve the request with some custom data,
       // you can resolve a `Response` object using `handler.resolve(response)`.
-      return handler.next(e);
+      return handler.next(err);
     },
   ),
 );

dio/lib/src/interceptor.dart

@@ -214,13 +214,13 @@ typedef InterceptorSendCallback = void Function(
 
 /// The signature of [Interceptor.onResponse].
 typedef InterceptorSuccessCallback = void Function(
-  Response<dynamic> e,
+  Response<dynamic> response,
   ResponseInterceptorHandler handler,
 );
 
 /// The signature of [Interceptor.onError].
 typedef InterceptorErrorCallback = void Function(
-  DioException e,
+  DioException err,
   ErrorInterceptorHandler handler,
 );
 

dio/test/interceptor_test.dart

@@ -421,34 +421,34 @@ void main() {
             response.data = response.data['data'];
             handler.next(response);
           },
-          onError: (DioException e, ErrorInterceptorHandler handler) {
-            if (e.response?.requestOptions != null) {
-              switch (e.response!.requestOptions.path) {
+          onError: (DioException err, ErrorInterceptorHandler handler) {
+            if (err.response?.requestOptions != null) {
+              switch (err.response!.requestOptions.path) {
                 case urlNotFound:
-                  return handler.next(e);
+                  return handler.next(err);
                 case urlNotFound1:
                   return handler.resolve(
                     Response(
-                      requestOptions: e.requestOptions,
+                      requestOptions: err.requestOptions,
                       data: 'fake data',
                     ),
                   );
                 case urlNotFound2:
                   return handler.resolve(
                     Response(
                       data: 'fake data',
-                      requestOptions: e.requestOptions,
+                      requestOptions: err.requestOptions,
                     ),
                   );
                 case urlNotFound3:
                   return handler.next(
-                    e.copyWith(
-                      error: 'custom error info [${e.response!.statusCode}]',
+                    err.copyWith(
+                      error: 'custom error info [${err.response!.statusCode}]',
                     ),
                   );
               }
             }
-            handler.next(e);
+            handler.next(err);
           },
         ),
       );
@@ -514,17 +514,17 @@ void main() {
         ..options.baseUrl = MockAdapter.mockBase
         ..interceptors.add(
           InterceptorsWrapper(
-            onError: (DioException e, ErrorInterceptorHandler handler) {
-              iError = e;
-              handler.next(e);
+            onError: (DioException err, ErrorInterceptorHandler handler) {
+              iError = err;
+              handler.next(err);
             },
           ),
         )
         ..interceptors.add(
           QueuedInterceptorsWrapper(
-            onError: (DioException e, ErrorInterceptorHandler handler) {
-              qError = e;
-              handler.next(e);
+            onError: (DioException err, ErrorInterceptorHandler handler) {
+              qError = err;
+              handler.next(err);
             },
           ),
         );

example/lib/response_interceptor.dart

@@ -15,37 +15,37 @@ void main() async {
         response.data = json.decode(response.data['data']);
         handler.next(response);
       },
-      onError: (DioException e, handler) {
-        if (e.response != null) {
-          switch (e.response!.requestOptions.path) {
+      onError: (DioException err, handler) {
+        if (err.response != null) {
+          switch (err.response!.requestOptions.path) {
             case urlNotFound:
-              return handler.next(e);
+              return handler.next(err);
             case urlNotFound1:
               handler.resolve(
                 Response(
-                  requestOptions: e.requestOptions,
+                  requestOptions: err.requestOptions,
                   data: 'fake data',
                 ),
               );
               break;
             case urlNotFound2:
               handler.resolve(
                 Response(
-                  requestOptions: e.requestOptions,
+                  requestOptions: err.requestOptions,
                   data: 'fake data',
                 ),
               );
               break;
             case urlNotFound3:
               handler.next(
-                e.copyWith(
-                  error: 'custom error info [${e.response!.statusCode}]',
+                err.copyWith(
+                  error: 'custom error info [${err.response!.statusCode}]',
                 ),
               );
               break;
           }
         } else {
-          handler.next(e);
+          handler.next(err);
         }
       },
     ),