Return deep clone of mock data in response

closes #46

package.json

@@ -38,14 +38,14 @@
     "axios": ">= 0.9.0"
   },
   "devDependencies": {
-    "axios": "^0.15.2",
+    "axios": "^0.16.1",
     "chai": "^3.5.0",
-    "cross-env": "^3.2.3",
-    "eslint": "^3.17.1",
+    "cross-env": "^4.0.0",
+    "eslint": "^3.19.0",
     "istanbul": "^0.4.5",
     "mocha": "^3.1.2",
     "rimraf": "^2.6.1",
-    "webpack": "^2.2.1"
+    "webpack": "^2.3.3"
   },
   "dependencies": {
     "deep-equal": "^1.0.1"

src/handle_request.js

@@ -3,7 +3,7 @@ var utils = require('./utils');
 function makeResponse(result, config) {
   return {
     status: result[0],
-    data: result[1],
+    data: utils.isObject(result[1]) ? JSON.parse(JSON.stringify(result[1])) : result[1],
     headers: result[2],
     config: config
   };

src/index.js

@@ -55,11 +55,13 @@ VERBS.concat('any').forEach(function(method) {
   MockAdapter.prototype[methodName] = function(matcher, body) {
     var _this = this;
     var matcher = matcher === undefined ?  /.*/ : matcher;
+
     function reply(code, response, headers) {
       var handler = [matcher, body, code, response, headers];
       addHandler(method, _this.handlers, handler);
       return _this;
     }
+
     return {
       reply: reply,
 

src/utils.js

@@ -111,9 +111,14 @@ function createErrorResponse(message, config, response) {
   return error;
 }
 
+function isObject(value) {
+  return value !== null && typeof value === 'object';
+}
+
 module.exports = {
   find: find,
   findHandler: findHandler,
+  isObject: isObject,
   purgeIfReplyOnce: purgeIfReplyOnce,
   settle: settle
 };