Next 9.5 redirection features not working

Describe the bug I’m trying to use the new redirection features in Next 9.5, but they don’t seem to work with Serverless-Next.js. Specifically, trailing slashes and redirects. Are these not supported yet?

To Reproduce I’ve added these options to next.config.js:

const nextConfig = {
  target: 'serverless',
  trailingSlash: false,

  // The main page is actually just a redirect
  async redirects() {
    return [
      {
        source: '/path',
        destination: '/path/more',
        permanent: true,
      },
    ];
  },
};

Expected behavior These work as expected on the local dev server. http://localhost/path redirects to http://localhost/path/more, and http://localhost/path/more/ redirects to http://localhost/path/more. However, deployed with serverless-next on AWS, these pages return 404 errors.

Versions

• OS: MacOS 10.15.5
• Node: 12.x (on AWS Lambda); 12.16.3 (local)
• Next: 9.5.1
• Serverless-Next: 1.17.0-alpha.1

[dphang]

Yep, they mentioned trailing slash so at least that one is supported now.

For custom redirect/rewrites/headers it looks like they have same underlying logic as they do path matching in similar way e.g with regex patterns. Seems like a good feature to add next, probably best to create general RFC/design doc for that so we do not have any perf issues, I can try to consolidate that later this week.

[dphang]

I created a PR for trailingSlash support: https://github.com/serverless-nextjs/serverless-next.js/pull/556