From 856c9a2bbea9c9a48a05c0df042a698a7a38aad2 Mon Sep 17 00:00:00 2001
From: JJ Kasper <jj@jjsweb.site>
Date: Tue, 11 May 2021 19:40:07 -0500
Subject: [PATCH 1/2] Fix ie11 support with webpack 5

---
 packages/next/build/webpack-config.ts | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/packages/next/build/webpack-config.ts b/packages/next/build/webpack-config.ts
index b19dbf1135219..966f8f23f3404 100644
--- a/packages/next/build/webpack-config.ts
+++ b/packages/next/build/webpack-config.ts
@@ -503,7 +503,7 @@ export default async function getBaseWebpackConfig(
       // and all other chunk depend on them so there is no
       // duplication that need to be pulled out.
       chunks: isWebpack5
-        ? (chunk) => !/^(main|pages\/_app)$/.test(chunk.name)
+        ? (chunk) => !/^(polyfills|main|pages\/_app)$/.test(chunk.name)
         : 'all',
       cacheGroups: {
         framework: {
@@ -1624,7 +1624,12 @@ export default async function getBaseWebpackConfig(
 
       if (isWebpack5 && !isServer) {
         for (const name of Object.keys(entry)) {
-          if (name === 'main' || name === 'amp' || name === 'react-refresh')
+          if (
+            name === 'polyfills' ||
+            name === 'main' ||
+            name === 'amp' ||
+            name === 'react-refresh'
+          )
             continue
           const dependOn =
             name.startsWith('pages/') && name !== 'pages/_app'

From cc32bffc7f3c8c6a72460c36a760518192bd3ff9 Mon Sep 17 00:00:00 2001
From: JJ Kasper <jj@jjsweb.site>
Date: Tue, 11 May 2021 19:54:27 -0500
Subject: [PATCH 2/2] fix hrefValue test on windows

---
 .../eslint-plugin-next/lib/rules/google-font-display.js     | 6 +++---
 .../eslint-plugin-next/lib/rules/google-font-preconnect.js  | 3 ++-
 .../eslint-plugin-next/lib/rules/no-page-custom-font.js     | 6 +++---
 3 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/packages/eslint-plugin-next/lib/rules/google-font-display.js b/packages/eslint-plugin-next/lib/rules/google-font-display.js
index 2f96363c7bb29..d59dde1021fc4 100644
--- a/packages/eslint-plugin-next/lib/rules/google-font-display.js
+++ b/packages/eslint-plugin-next/lib/rules/google-font-display.js
@@ -23,9 +23,9 @@ module.exports = {
         }
 
         const hrefValue = attributes.value('href')
-        const isGoogleFont = hrefValue?.startsWith(
-          'https://fonts.googleapis.com/css'
-        )
+        const isGoogleFont =
+          typeof hrefValue === 'string' &&
+          hrefValue.startsWith('https://fonts.googleapis.com/css')
 
         if (isGoogleFont) {
           const params = new URLSearchParams(hrefValue.split('?')[1])
diff --git a/packages/eslint-plugin-next/lib/rules/google-font-preconnect.js b/packages/eslint-plugin-next/lib/rules/google-font-preconnect.js
index 931ad7ad87cf8..6d5aed8bcc431 100644
--- a/packages/eslint-plugin-next/lib/rules/google-font-preconnect.js
+++ b/packages/eslint-plugin-next/lib/rules/google-font-preconnect.js
@@ -26,7 +26,8 @@ module.exports = {
           attributes.value('rel') !== 'preconnect'
 
         if (
-          hrefValue?.startsWith('https://fonts.gstatic.com') &&
+          typeof hrefValue === 'string' &&
+          hrefValue.startsWith('https://fonts.gstatic.com') &&
           preconnectMissing
         ) {
           context.report({
diff --git a/packages/eslint-plugin-next/lib/rules/no-page-custom-font.js b/packages/eslint-plugin-next/lib/rules/no-page-custom-font.js
index ab295a2682d68..807afb21a60ee 100644
--- a/packages/eslint-plugin-next/lib/rules/no-page-custom-font.js
+++ b/packages/eslint-plugin-next/lib/rules/no-page-custom-font.js
@@ -38,9 +38,9 @@ module.exports = {
         }
 
         const hrefValue = attributes.value('href')
-        const isGoogleFont = hrefValue?.startsWith(
-          'https://fonts.googleapis.com/css'
-        )
+        const isGoogleFont =
+          typeof hrefValue === 'string' &&
+          hrefValue.startsWith('https://fonts.googleapis.com/css')
 
         if (isGoogleFont) {
           context.report({