Try manually redirecting trailing slash in Vercel to non-trailing in …

…Next

next.config.js

@@ -29,11 +29,11 @@ if (process.env.USE_LOCAL_ENV_FILE === 'true') {
 
 const nextConfig = {
   // basePath: basePath,
-  exportTrailingSlash: false,
+  exportTrailingSlash: true,
   // We also set the trailing slash preference in vercel.json.
   // Trailing slash stable in v9.4.5-canary.41:
   // https://github.com/vercel/next.js/releases/tag/v9.4.5-canary.41
-  trailingSlash: true,
+  // trailingSlash: true,
   async redirects() {
     return [
       // This is for convenience in local development and when

vercel.json

@@ -5,6 +5,9 @@
   "alias": ["dev-tab-web"],
   "cleanUrls": true,
   "trailingSlash": true,
+  "rewrites": [
+    { "source": "/(.*)/", "destination": "/$1" }
+  ],
   "headers": [
     {
       "source": "/newtab/service-worker.js",