Interceptor clear (#4248)

* Adding interceptor clearing

* Fixing spacing

* changed clear to empty array

* fixed interceptor clear test

Co-authored-by: Andrew <Andrew@Andrews-MacBook-Pro.local>
Co-authored-by: Jay <jasonsaayman@gmail.com>

README.md

@@ -638,6 +638,15 @@ const myInterceptor = axios.interceptors.request.use(function () {/*...*/});
 axios.interceptors.request.eject(myInterceptor);
 ```
 
+You can also clear all interceptors for requests or responses.
+```js
+const instance = axios.create();
+instance.interceptors.request.use(function () {/*...*/});
+instance.interceptors.request.clear(); // Removes interceptors from requests
+instance.interceptors.response.use(function () {/*...*/});
+instance.interceptors.response.clear(); // Removes interceptors from responses
+```
+
 You can add interceptors to a custom instance of axios.
 
 ```js

lib/core/InterceptorManager.js

@@ -35,6 +35,15 @@ InterceptorManager.prototype.eject = function eject(id) {
   }
 };
 
+/**
+ * Clear all interceptors from the stack
+ */
+InterceptorManager.prototype.clear = function clear() {
+  if (this.handlers) {
+    this.handlers = [];
+  }
+};
+
 /**
  * Iterate over all the registered interceptors
  *

test/specs/interceptors.spec.js

@@ -571,4 +571,32 @@ describe('interceptors', function () {
       done();
     });
   });
+
+  it('should clear all request interceptors', function () {
+    var instance = axios.create({
+      baseURL: 'http://test.com/'
+    });
+
+    instance.interceptors.request.use(function (config) {
+      return config
+    });
+
+    instance.interceptors.request.clear();
+
+    expect(instance.interceptors.request.handlers.length).toBe(0);
+  });
+
+  it('should clear all response interceptors', function () {
+    var instance = axios.create({
+      baseURL: 'http://test.com/'
+    });
+
+    instance.interceptors.response.use(function (config) {
+      return config
+    });
+
+    instance.interceptors.response.clear();
+
+    expect(instance.interceptors.response.handlers.length).toBe(0);
+  });
 });