Bun.FileSystemRouter router match unknown behaviour

[AlbertSabate]

What version of Bun is running?

1.1.17

What platform is your computer?

Darwin 23.5.0 x86_64 i386

What steps can reproduce the bug?

Create a bun project with FileSystemRouter:

Files created (narrowed down):

• src/pages/admin/[businessId]
• src/pages/admin/[businessId]/providers
• src/pages/admin/[businessId]/providers/create
• src/pages/admin/[businessId]/providers/[providerId]/edit
• src/pages/admin/[businessId]/providers/[providerId]/delete

Create file on process.cwd() - for example test.js:

const router = new Bun.FileSystemRouter({
  style: "nextjs",
  dir: process.cwd() + '/src/pages',
});

const route = router.match('http://localhost:3001/admin/6679fbe17b41431a977163fd/providers/create');
console.log(router);
console.log(route);

What is the expected behavior?

My expectation is the definition of the documentation.
https://bun.sh/docs/api/file-system-router

• params Record<string, string> and not Record<string, string[]>
• When and how does a match params or query become a string[]? - Should not return Record<string, string[]>. Or this should be properly defined.
• params and the query return the same information. Should return as documented on the above link.

MatchedRoute {
  filePath: "/xxxxxx/src/pages/admin/[businessId]/providers/create.tsx",
  kind: "dynamic",
  name: "/admin/[businessId]/providers/create",
  params: {
    businessId: "6679fbe17b41431a977163fd",
  },
  pathname: "/admin/6679fbe17b41431a977163fd/providers/create",
  query: {},
  scriptSrc: "admin/[businessId]/providers/create.tsx",
  src: "admin/[businessId]/providers/create.tsx",
}

What do you see instead?

MatchedRoute {
  filePath: "/xxxxxx/src/pages/admin/[businessId]/providers/create.tsx",
  kind: "dynamic",
  name: "/admin/[businessId]/providers/create",
  params: {
    businessId: [ "6679fbe17b41431a977163fd", "6679fbe17b41431a977163fd" ],
  },
  pathname: "/admin/6679fbe17b41431a977163fd/providers/create",
  query: {
    businessId: [ "6679fbe17b41431a977163fd", "6679fbe17b41431a977163fd" ],
  },
  scriptSrc: "admin/[businessId]/providers/create.tsx",
  src: "admin/[businessId]/providers/create.tsx",
}

Additional information

• src/pages/admin/[businessId]
  Works as expected

• src/pages/admin/[businessId]/providers/create
  Does not work as expected