From b681e919c40fbf7abd109d0cb4f0caf2fd5553e5 Mon Sep 17 00:00:00 2001
From: Ayush Gupta <ayushg3112@gmail.com>
Date: Mon, 20 Aug 2018 14:32:23 +0530
Subject: [PATCH] Adding isAxiosError flag to errors thrown by axios (#1419)

---
 index.d.ts                           | 1 +
 lib/core/enhanceError.js             | 3 +++
 test/specs/core/createError.spec.js  | 3 ++-
 test/specs/core/enhanceError.spec.js | 1 +
 4 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/index.d.ts b/index.d.ts
index 4c7b53e..a4a20e9 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -81,6 +81,7 @@ export interface AxiosError extends Error {
   code?: string;
   request?: any;
   response?: AxiosResponse;
+  isAxiosError: boolean;
 }
 
 export interface AxiosPromise<T = any> extends Promise<AxiosResponse<T>> {
diff --git a/lib/core/enhanceError.js b/lib/core/enhanceError.js
index 05f0fc4..02fbbd6 100644
--- a/lib/core/enhanceError.js
+++ b/lib/core/enhanceError.js
@@ -15,8 +15,11 @@ module.exports = function enhanceError(error, config, code, request, response) {
   if (code) {
     error.code = code;
   }
+
   error.request = request;
   error.response = response;
+  error.isAxiosError = true;
+
   error.toJSON = function() {
     return {
       // Standard
diff --git a/test/specs/core/createError.spec.js b/test/specs/core/createError.spec.js
index d78dc9a..53f708b 100644
--- a/test/specs/core/createError.spec.js
+++ b/test/specs/core/createError.spec.js
@@ -1,7 +1,7 @@
 var createError = require('../../../lib/core/createError');
 
 describe('core::createError', function() {
-  it('should create an Error with message, config, code, request and response', function() {
+  it('should create an Error with message, config, code, request, response and isAxiosError', function() {
     var request = { path: '/foo' };
     var response = { status: 200, data: { foo: 'bar' } };
     var error = createError('Boom!', { foo: 'bar' }, 'ESOMETHING', request, response);
@@ -11,6 +11,7 @@ describe('core::createError', function() {
     expect(error.code).toBe('ESOMETHING');
     expect(error.request).toBe(request);
     expect(error.response).toBe(response);
+    expect(error.isAxiosError).toBe(true);
   });
   it('should create an Error that can be serialized to JSON', function() {
     // Attempting to serialize request and response results in
diff --git a/test/specs/core/enhanceError.spec.js b/test/specs/core/enhanceError.spec.js
index 0b7c936..f8e24d1 100644
--- a/test/specs/core/enhanceError.spec.js
+++ b/test/specs/core/enhanceError.spec.js
@@ -11,6 +11,7 @@ describe('core::enhanceError', function() {
     expect(error.code).toBe('ESOMETHING');
     expect(error.request).toBe(request);
     expect(error.response).toBe(response);
+    expect(error.isAxiosError).toBe(true);
   });
 
   it('should return error', function() {