From cdaf55c7da69c08ca1125bdb9fb4e5720e999aa6 Mon Sep 17 00:00:00 2001
From: Alexandre Bourdin <abourdin@users.noreply.github.com>
Date: Tue, 16 Nov 2021 17:16:44 +0100
Subject: [PATCH] Merge pull request #5808 from
 overleaf/revert-5736-ab-drop-ie11-polyfill

Revert "Remove IE11 polyfills and update browser support policy"

GitOrigin-RevId: fa44a6bfa796d191446956e94d9e533a70e59da4
---
 services/web/frontend/js/libraries.js                       | 3 +++
 .../web/frontend/js/shared/hooks/use-abort-controller.js    | 1 +
 services/web/package.json                                   | 6 +++---
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/services/web/frontend/js/libraries.js b/services/web/frontend/js/libraries.js
index 9539a161a6..ac453c8013 100644
--- a/services/web/frontend/js/libraries.js
+++ b/services/web/frontend/js/libraries.js
@@ -13,5 +13,8 @@ import './vendor/libs/select/select'
 // CSS
 import 'angular/angular-csp.css'
 
+// Polyfill fetch for IE11
+import 'isomorphic-unfetch'
+
 // Rewrite meta elements
 import './utils/meta'
diff --git a/services/web/frontend/js/shared/hooks/use-abort-controller.js b/services/web/frontend/js/shared/hooks/use-abort-controller.js
index 35dbb1b555..c6ad09e1b7 100644
--- a/services/web/frontend/js/shared/hooks/use-abort-controller.js
+++ b/services/web/frontend/js/shared/hooks/use-abort-controller.js
@@ -1,3 +1,4 @@
+import 'abort-controller/polyfill'
 import { useEffect, useState } from 'react'
 
 export default function useAbortController() {
diff --git a/services/web/package.json b/services/web/package.json
index c024e2da80..ccc42ed2d9 100644
--- a/services/web/package.json
+++ b/services/web/package.json
@@ -38,9 +38,9 @@
     "storybook": "start-storybook -p 6006 -s ./public"
   },
   "browserslist": [
-    "last 2 years",
-    "firefox esr",
-    "not dead"
+    "last 1 year",
+    "ie 11",
+    "firefox esr"
   ],
   "dependencies": {
     "@babel/cli": "^7.14.5",