From 9e9949c5b0ababa9207ec1f5d916feeb6ae49e6f Mon Sep 17 00:00:00 2001
From: Andrew Leedham <AndrewLeedham@Outlook.com>
Date: Tue, 19 Mar 2019 16:03:49 +0000
Subject: [PATCH 1/2] fix(node-fetch): make systemError optional

---
 types/node-fetch/index.d.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/types/node-fetch/index.d.ts b/types/node-fetch/index.d.ts
index 03ae639d26..8883dc1b9d 100644
--- a/types/node-fetch/index.d.ts
+++ b/types/node-fetch/index.d.ts
@@ -4,6 +4,7 @@
 //                 Niklas Lindgren <https://github.com/nikcorg>
 //                 Vinay Bedre <https://github.com/vinaybedre>
 //                 Antonio Román <https://github.com/kyranet>
+//                 Andrew Leedham <https://github.com/AndrewLeedham>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
@@ -134,7 +135,7 @@ export class Body {
 
 export class FetchError extends Error {
     name: "FetchError";
-    constructor(message: string, type: string, systemError: string);
+    constructor(message: string, type: string, systemError?: string);
     type: string;
     code?: string;
     errno?: string;

From 576c81e41be1cae94d85ccfc955aaf86afc80f3d Mon Sep 17 00:00:00 2001
From: Andrew Leedham <AndrewLeedham@Outlook.com>
Date: Tue, 19 Mar 2019 16:16:37 +0000
Subject: [PATCH 2/2] test(node-fetch): added FetchError test

---
 types/node-fetch/node-fetch-tests.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/types/node-fetch/node-fetch-tests.ts b/types/node-fetch/node-fetch-tests.ts
index d35114f60a..165ac24800 100644
--- a/types/node-fetch/node-fetch-tests.ts
+++ b/types/node-fetch/node-fetch-tests.ts
@@ -1,4 +1,4 @@
-import fetch, { Headers, Request, RequestInit, Response } from 'node-fetch';
+import fetch, { Headers, Request, RequestInit, Response, FetchError } from 'node-fetch';
 import { Agent } from "http";
 
 function test_fetchUrlWithOptions() {
@@ -82,3 +82,8 @@ function test_isRedirect() {
     fetch.isRedirect(301);
     fetch.isRedirect(201);
 }
+
+function test_FetchError() {
+    new FetchError('message', 'type', 'systemError');
+    new FetchError('message', 'type');
+}