From 94e26e59afe7233f5f01c83b4573ad14efa51a72 Mon Sep 17 00:00:00 2001
From: Matthew Mascord <27346863+matthewmascord@users.noreply.github.com>
Date: Tue, 4 May 2021 12:00:51 +0100
Subject: [PATCH] PLATUI-1154: Add polyfill for Number.isNaN to fix timeout
 dialog issue on IE

Tested that the timeout dialog displays on:

Mac OS 11.3 Chrome 90
Mac OS 11.3 Firefox 88
Mac OS 11.3 Safari 14.1
Windows 10 IE 11
Windows 10 Edge 90
Windows 10 Firefox 88
Windows 10 Chrome 90
Android v9 Samsung Galaxy S10 Chrome
Android v9 Samsung Galaxy S10 Samsung Internet
iPhone X, iOS 14.4.2, Safari
iPhone X, iOS 14.4.2, Chrome
---
 CHANGELOG.md                                    | 6 ++++++
 check-compatibility.js                          | 2 +-
 package-lock.json                               | 2 +-
 package.json                                    | 2 +-
 src/components/timeout-dialog/validate-input.js | 2 ++
 src/vendor/polyfills/Number/prototype/isNaN.js  | 4 ++++
 6 files changed, 15 insertions(+), 3 deletions(-)
 create mode 100644 src/vendor/polyfills/Number/prototype/isNaN.js

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 994e65bf..712f8e48 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [1.33.0] - 2021-05-04
+
+## Fixed
+
+- Fix timeout dialog on IE by adding polyfill for Number.isNaN
+
 ## [1.32.0] - 2021-04-29
 
 ## Fixed
diff --git a/check-compatibility.js b/check-compatibility.js
index 655a5975..7c17e987 100644
--- a/check-compatibility.js
+++ b/check-compatibility.js
@@ -14,7 +14,7 @@ if (!knownPrototypeKitNames.includes(consumerPackageJson.name)) {
 }
 
 const compatibility = {
-  1.30: {
+  1.33: {
     'prototype-kit': ['9.12', '9.11', '9.10', '9.9', '9.8', '9.7', '9.6', '9.5', '9.4', '9.3', '9.2', '9.1', '9.0', '9.9', '9.10', '9.11'],
   },
   0.6: {
diff --git a/package-lock.json b/package-lock.json
index 5e708342..eb247e8b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "hmrc-frontend",
-  "version": "1.31.0",
+  "version": "1.33.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index b3921eed..ecb548d0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hmrc-frontend",
-  "version": "1.32.0",
+  "version": "1.33.0",
   "description": "Design patterns for HMRC frontends",
   "scripts": {
     "start": "gulp dev",
diff --git a/src/components/timeout-dialog/validate-input.js b/src/components/timeout-dialog/validate-input.js
index db8c2320..2c3c898a 100644
--- a/src/components/timeout-dialog/validate-input.js
+++ b/src/components/timeout-dialog/validate-input.js
@@ -1,3 +1,5 @@
+import '../../vendor/polyfills/Number/prototype/isNaN';
+
 function ValidateInput() {
 }
 
diff --git a/src/vendor/polyfills/Number/prototype/isNaN.js b/src/vendor/polyfills/Number/prototype/isNaN.js
new file mode 100644
index 00000000..aaa1a017
--- /dev/null
+++ b/src/vendor/polyfills/Number/prototype/isNaN.js
@@ -0,0 +1,4 @@
+// Polyfill from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN
+Number.isNaN = Number.isNaN || function isNaN(input) {
+  return typeof input === 'number' && input !== input;
+}