Move transform response logic from adapters to dispatcher

lib/adapters/README.md

@@ -6,7 +6,6 @@ The modules under `adapters/` are modules that handle dispatching a request and
 
 ```js
 var settle = require('./../core/settle');
-var transformData = require('./../core/transformData');
 
 module.exports myAdapter(resolve, reject, config) {
   // At this point:
@@ -14,15 +13,11 @@ module.exports myAdapter(resolve, reject, config) {
   //  - request transformers have already run
   //  - request interceptors have already run
   
-  // Make the request using config provided/
+  // Make the request using config provided
   // Upon response settle the Promise
   
   var response = {
-    data: transformData(
-      responseData,
-      responseHeaders,
-      config.transformResponse
-    ),
+    data: responseData,
     status: request.status,
     statusText: request.statusText,
     headers: responseHeaders,
@@ -33,6 +28,7 @@ module.exports myAdapter(resolve, reject, config) {
   settle(resolve, reject, response);
 
   // From here:
+  //  - response transformers will run
   //  - response interceptors will run
 }
 ```

lib/adapters/http.js

@@ -2,7 +2,6 @@
 
 var utils = require('./../utils');
 var settle = require('./../core/settle');
-var transformData = require('./../core/transformData');
 var buildURL = require('./../helpers/buildURL');
 var http = require('http');
 var https = require('https');
@@ -117,6 +116,7 @@ module.exports = function httpAdapter(resolve, reject, config) {
       config: config,
       request: req
     };
+
     if (config.responseType === 'stream') {
       response.data = stream;
       settle(resolve, reject, response);
@@ -141,7 +141,8 @@ module.exports = function httpAdapter(resolve, reject, config) {
         if (config.responseType !== 'arraybuffer') {
           responseData = responseData.toString('utf8');
         }
-        response.data = transformData(responseData, res.headers, config.transformResponse);
+
+        response.data = responseData;
         settle(resolve, reject, response);
       });
     }

lib/adapters/xhr.js

@@ -2,7 +2,6 @@
 
 var utils = require('./../utils');
 var settle = require('./../core/settle');
-var transformData = require('./../core/transformData');
 var buildURL = require('./../helpers/buildURL');
 var parseHeaders = require('./../helpers/parseHeaders');
 var isURLSameOrigin = require('./../helpers/isURLSameOrigin');
@@ -24,7 +23,10 @@ module.exports = function xhrAdapter(resolve, reject, config) {
   // For IE 8/9 CORS support
   // Only supports POST and GET calls and doesn't returns the response headers.
   // DON'T do this for testing b/c XMLHttpRequest is mocked, not XDomainRequest.
-  if (process.env.NODE_ENV !== 'test' && typeof window !== 'undefined' && window.XDomainRequest && !('withCredentials' in request) && !isURLSameOrigin(config.url)) {
+  if (process.env.NODE_ENV !== 'test' &&
+      typeof window !== 'undefined' &&
+      window.XDomainRequest && !('withCredentials' in request) &&
+      !isURLSameOrigin(config.url)) {
     request = new window.XDomainRequest();
     loadEvent = 'onload';
     xDomain = true;
@@ -60,11 +62,7 @@ module.exports = function xhrAdapter(resolve, reject, config) {
     var responseHeaders = 'getAllResponseHeaders' in request ? parseHeaders(request.getAllResponseHeaders()) : null;
     var responseData = !config.responseType || config.responseType === 'text' ? request.responseText : request.response;
     var response = {
-      data: transformData(
-        responseData,
-        responseHeaders,
-        config.transformResponse
-      ),
+      data: responseData,
       // IE sends 1223 instead of 204 (https://github.com/mzabriskie/axios/issues/201)
       status: request.status === 1223 ? 204 : request.status,
       statusText: request.status === 1223 ? 'No Content' : request.statusText,

lib/core/dispatchRequest.js

@@ -56,6 +56,15 @@ module.exports = function dispatchRequest(config) {
     } catch (e) {
       reject(e);
     }
+  }).then(function onFulfilled(response) {
+    // Transform response data
+    response.data = transformData(
+      response.data,
+      response.headers,
+      config.transformResponse
+    );
+
+    return response;
   });
 };