Add axios config defaults definitions

axios/axios-tests.ts

@@ -91,3 +91,9 @@ var repoSum = (repo1: Axios.AxiosXHR<Repository>, repo2: Axios.AxiosXHR<Reposito
 };
 
 axios.all<Repository, Repository>([getRepoDetails, getRepoDetails]).then(axios.spread(repoSum));
+
+axios.defaults.baseURL = 'https://api.example.com';
+axios.defaults.headers.common['Authorization'] = "AUTH_TOKEN";
+axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded';
+
+axiosInstance.defaults.headers.common['Authorization'] = "AUTH_TOKEN";

axios/axios.d.ts

@@ -124,6 +124,18 @@ declare namespace Axios {
         data?: T;
     }
 
+    interface AxiosXHRConfigDefaults<T> extends AxiosXHRConfigBase<T> {
+        /**
+         * custom headers to be sent
+         */
+        headers: {
+            common: {[index: string]: string};
+            patch: {[index: string]: string};
+            post: {[index: string]: string};
+            put: {[index: string]: string};
+        };
+    }
+
     /**
      * <T> - expected response type,
      * <U> - request body data type
@@ -223,6 +235,11 @@ declare namespace Axios {
          */
         interceptors: Interceptor;
 
+        /**
+         * Config defaults
+         */
+        defaults: AxiosXHRConfigDefaults<any>;
+
         /**
          * equivalent to `Promise.all`
          */