Fixing config weirdness

lib/adapters/http.js

@@ -1,6 +1,5 @@
 'use strict';
 
-var defaults = require('./../defaults');
 var utils = require('./../utils');
 var buildURL = require('./../helpers/buildURL');
 var transformData = require('./../helpers/transformData');
@@ -12,19 +11,8 @@ var pkg = require('./../../package.json');
 var Buffer = require('buffer').Buffer;
 
 module.exports = function httpAdapter(resolve, reject, config) {
-  // Transform request data
-  var data = transformData(
-    config.data,
-    config.headers,
-    config.transformRequest
-  );
-
-  // Merge headers
-  var headers = utils.merge(
-    defaults.headers.common,
-    defaults.headers[config.method] || {},
-    config.headers || {}
-  );
+  var data = config.data;
+  var headers = config.headers;
 
   // Set User-Agent (required by some servers)
   // Only set header if it hasn't been set in config

lib/adapters/xhr.js

@@ -2,7 +2,6 @@
 
 /*global ActiveXObject:true*/
 
-var defaults = require('./../defaults');
 var utils = require('./../utils');
 var buildURL = require('./../helpers/buildURL');
 var parseHeaders = require('./../helpers/parseHeaders');
@@ -12,21 +11,10 @@ var ieVersion = require('./../helpers/ieVersion');
 var btoa = window.btoa || require('./../helpers/btoa');
 
 module.exports = function xhrAdapter(resolve, reject, config) {
-  // Transform request data
-  var data = transformData(
-    config.data,
-    config.headers,
-    config.transformRequest
-  );
+  var requestData = config.data;
+  var requestHeaders = config.headers;
 
-  // Merge headers
-  var requestHeaders = utils.merge(
-    defaults.headers.common,
-    defaults.headers[config.method] || {},
-    config.headers || {}
-  );
-
-  if (utils.isFormData(data)) {
+  if (utils.isFormData(requestData)) {
     delete requestHeaders['Content-Type']; // Let the browser set it
   }
 
@@ -89,19 +77,19 @@ module.exports = function xhrAdapter(resolve, reject, config) {
     var cookies = require('./../helpers/cookies');
 
     // Add xsrf header
-    var xsrfValue =  config.withCredentials || isURLSameOrigin(config.url) ?
-        cookies.read(config.xsrfCookieName || defaults.xsrfCookieName) :
+    var xsrfValue = config.withCredentials || isURLSameOrigin(config.url) ?
+        cookies.read(config.xsrfCookieName) :
         undefined;
 
     if (xsrfValue) {
-      requestHeaders[config.xsrfHeaderName || defaults.xsrfHeaderName] = xsrfValue;
+      requestHeaders[config.xsrfHeaderName] = xsrfValue;
     }
   }
 
   // Add headers to the request
   if (!xDomain) {
     utils.forEach(requestHeaders, function setRequestHeader(val, key) {
-      if (!data && key.toLowerCase() === 'content-type') {
+      if (!requestData && key.toLowerCase() === 'content-type') {
         // Remove Content-Type if data is undefined
         delete requestHeaders[key];
       } else {
@@ -127,10 +115,10 @@ module.exports = function xhrAdapter(resolve, reject, config) {
     }
   }
 
-  if (utils.isArrayBuffer(data)) {
-    data = new DataView(data);
+  if (utils.isArrayBuffer(requestData)) {
+    requestData = new DataView(requestData);
   }
 
   // Send the request
-  request.send(data);
+  request.send(requestData);
 };

lib/axios.js

@@ -7,15 +7,10 @@ var InterceptorManager = require('./core/InterceptorManager');
 var isAbsoluteURL = require('./helpers/isAbsoluteURL');
 var combineURLs = require('./helpers/combineURLs');
 var bind = require('./helpers/bind');
+var transformData = require('./helpers/transformData');
 
 function Axios(defaultConfig) {
-  this.defaultConfig = utils.merge({
-    headers: {},
-    timeout: defaults.timeout,
-    transformRequest: defaults.transformRequest,
-    transformResponse: defaults.transformResponse
-  }, defaultConfig);
-
+  this.defaults = utils.merge({}, defaultConfig);
   this.interceptors = {
     request: new InterceptorManager(),
     response: new InterceptorManager()
@@ -31,14 +26,36 @@ Axios.prototype.request = function request(config) {
     }, arguments[1]);
   }
 
-  config = utils.merge(this.defaultConfig, { method: 'get' }, config);
+  config = utils.merge(defaults, this.defaults, { method: 'get' }, config);
 
+  // Support baseURL config
   if (config.baseURL && !isAbsoluteURL(config.url)) {
     config.url = combineURLs(config.baseURL, config.url);
   }
 
   // Don't allow overriding defaults.withCredentials
-  config.withCredentials = config.withCredentials || defaults.withCredentials;
+  config.withCredentials = config.withCredentials || this.defaults.withCredentials;
+
+  // Transform request data
+  config.data = transformData(
+    config.data,
+    config.headers,
+    config.transformRequest
+  );
+
+  // Flatten headers
+  config.headers = utils.merge(
+    config.headers.common || {},
+    config.headers[config.method] || {},
+    config.headers || {}
+  );
+
+  utils.forEach(
+    ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],
+    function cleanHeaderConfig(method) {
+      delete config.headers[method];
+    }
+  );
 
   // Hook up interceptors middleware
   var chain = [dispatchRequest, undefined];
@@ -59,8 +76,7 @@ Axios.prototype.request = function request(config) {
   return promise;
 };
 
-var defaultInstance = new Axios();
-
+var defaultInstance = new Axios(defaults);
 var axios = module.exports = bind(Axios.prototype.request, defaultInstance);
 
 axios.create = function create(defaultConfig) {
@@ -68,7 +84,7 @@ axios.create = function create(defaultConfig) {
 };
 
 // Expose defaults
-axios.defaults = defaults;
+axios.defaults = defaultInstance.defaults;
 
 // Expose all/spread
 axios.all = function all(promises) {

lib/utils.js

@@ -212,7 +212,11 @@ function forEach(obj, fn) {
 function merge(/* obj1, obj2, obj3, ... */) {
   var result = {};
   function assignValue(val, key) {
-    result[key] = val;
+    if (typeof result[key] === 'object' && typeof val === 'object') {
+      result[key] = merge(result[key], val);
+    } else {
+      result[key] = val;
+    }
   }
 
   for (var i = 0, l = arguments.length; i < l; i++) {