Reproduction repo for NextJS issues

This contains repros for:

• vercel/next.js#48305
• vercel/next.js#46648

The only changes from the base installation were:

• Adding basePath: '/test/path' to next.config.js
• Adding example pages in /app and /pages

This repo is hosted at https://nextjs-proxy-test-ten.vercel.app/test/path

I added an _error.ts page that outputs the headers it sees. Maybe that would help.

Soft navigation not working on [dynamic segments] when using nextConfig.basePath & new /app directory #48305

Open inspector, and go to https://nextjs-proxy-test-ten.vercel.app/test/path

You can see that preloads to routes with dynamic segments, or any routes inside /pages, result in a 404:

Clicking on any of those links navigates to the correct page, but with a full page load. The same 404 behavior happens on any of the pages.

Other notes:

The 404 that shows in inspector entirely skips any error handling in the /app folder (ie not-found.js,error.js, global-error.js). To effect any change in the error output, I had to add a /pages/_error.js file.

Links at basePath not working for random internal links #46648

Go to https://nextjs-proxy-test-ten.vercel.app/test/path/pages-page

Follow any link on that page. You'll see:

• Hovering over the link shows the correct URL
• Clicking the link results in the basePath being added twice.

---

Default readme below:

This is a Next.js project bootstrapped with create-next-app.

Getting Started

First, run the development server:

npm run dev
# or
yarn dev
# or
pnpm dev

Open http://localhost:3000 with your browser to see the result.

You can start editing the page by modifying app/page.tsx. The page auto-updates as you edit the file.

http://localhost:3000/api/hello is an endpoint that uses Route Handlers. This endpoint can be edited in app/api/hello/route.ts.

This project uses next/font to automatically optimize and load Inter, a custom Google Font.

Learn More

To learn more about Next.js, take a look at the following resources:

• Next.js Documentation - learn about Next.js features and API.
• Learn Next.js - an interactive Next.js tutorial.

You can check out the Next.js GitHub repository - your feedback and contributions are welcome!

Deploy on Vercel

The easiest way to deploy your Next.js app is to use the Vercel Platform from the creators of Next.js.

Check out our Next.js deployment documentation for more details.