From b7fd889fcd5004739eaf4fb8ad60bce0a8b43d8e Mon Sep 17 00:00:00 2001
From: orangemug <info@orangemug.co.uk>
Date: Sun, 23 Sep 2018 21:00:17 +0100
Subject: [PATCH] Removed signal from fetch as not supported in all browsers.

---
 src/components/modals/OpenModal.jsx | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/components/modals/OpenModal.jsx b/src/components/modals/OpenModal.jsx
index 065704ed..85794e3d 100644
--- a/src/components/modals/OpenModal.jsx
+++ b/src/components/modals/OpenModal.jsx
@@ -76,10 +76,9 @@ class OpenModal extends React.Component {
   onStyleSelect = (styleUrl) => {
     this.clearError();
 
-    const requestController = new AbortController();
+    let canceled;
 
     const activeRequest = fetch(styleUrl, {
-      signal: requestController.signal,
       mode: 'cors',
       credentials: "same-origin"
     })
@@ -87,6 +86,10 @@ class OpenModal extends React.Component {
       return response.json();
     })
     .then((body) => {
+      if(canceled) {
+        return;
+      }
+
       this.setState({
         activeRequest: null,
         activeRequestUrl: null
@@ -107,7 +110,11 @@ class OpenModal extends React.Component {
     })
 
     this.setState({
-      activeRequest: requestController,
+      activeRequest: {
+        abort: function() {
+          canceled = true;
+        }
+      },
       activeRequestUrl: styleUrl
     })
   }