Fixing #385 - Keep defaults local to instance

lib/axios.js

@@ -32,7 +32,7 @@ axios.Axios = Axios;
 
 // Factory for creating new instances
 axios.create = function create(instanceConfig) {
-  return createInstance(utils.merge(defaults, instanceConfig));
+  return createInstance(utils.mergeConfig(axios.defaults, instanceConfig || {}));
 };
 
 // Expose Cancel & CancelToken

lib/core/Axios.js

@@ -1,6 +1,5 @@
 'use strict';
 
-var defaults = require('./../defaults');
 var utils = require('./../utils');
 var InterceptorManager = require('./InterceptorManager');
 var dispatchRequest = require('./dispatchRequest');
@@ -24,15 +23,20 @@ function Axios(instanceConfig) {
  * @param {Object} config The config specific for this request (merged with this.defaults)
  */
 Axios.prototype.request = function request(config) {
+  config = config || {};
+
   /*eslint no-param-reassign:0*/
   // Allow for axios('example/url'[, config]) a la fetch API
   if (typeof config === 'string') {
-    config = utils.merge({
-      url: arguments[0]
-    }, arguments[1]);
+    config = arguments[1] || {};
+    config.url = arguments[0];
   }
 
-  config = utils.merge(defaults, this.defaults, { method: 'get' }, config);
+  if (!config.method) {
+    config.method = 'get';
+  }
+
+  config = utils.mergeConfig(this.defaults, config);
   config.method = config.method.toLowerCase();
 
   // Hook up interceptors middleware

lib/utils.js

@@ -279,6 +279,51 @@ function extend(a, b, thisArg) {
   return a;
 }
 
+function mergeConfig(defaults, instanceConfig) {
+  var config = {};
+  forEach(['url', 'method', 'params', 'data'], function(prop) {
+    config[prop] = instanceConfig[prop];
+  });
+  forEach(['headers', 'auth', 'proxy'], function(prop) {
+    if (!isUndefined(instanceConfig[prop])) {
+      if (!isObject(instanceConfig[prop])) {
+        config[prop] = instanceConfig[prop];
+      } else {
+        config[prop] = merge(
+          defaults[prop],
+          instanceConfig[prop]
+        );
+      }
+    } else if (!isUndefined(defaults[prop])) {
+      config[prop] = JSON.parse(JSON.stringify(defaults[prop]));
+    }
+  });
+  var remainingProperties = [
+    'baseURL',
+    'transformRequest',
+    'transformResponse',
+    'paramsSerializer',
+    'timeout',
+    'withCredentials',
+    'adapter',
+    'responseType',
+    'xsrfCookieName',
+    'xsrfHeaderName',
+    'onUploadProgress',
+    'onDownloadProgress',
+    'maxContentLength',
+    'validateStatus',
+    'maxRedirects',
+    'httpAgent',
+    'httpsAgent',
+    'cancelToken'
+  ];
+  forEach(remainingProperties, function(prop) {
+    config[prop] = !isUndefined(instanceConfig[prop]) ? instanceConfig[prop] : defaults[prop];
+  });
+  return config;
+}
+
 module.exports = {
   isArray: isArray,
   isArrayBuffer: isArrayBuffer,
@@ -299,5 +344,6 @@ module.exports = {
   forEach: forEach,
   merge: merge,
   extend: extend,
-  trim: trim
+  trim: trim,
+  mergeConfig: mergeConfig
 };