Wildcard Route Issue in Koa-Router v13

[Caringor]

Environment

• Package Name: koa-router

• Version: v13.x (latest)

• Node.js Version: v22.12.0

• Operating System: macOS 14.4.1

Summary

After upgrading to koa-router v13 from v12, I encountered an issue with wildcard routes. Specifically, routes defined with * (e.g., :proxyPath*) no longer work as expected.

Steps to Reproduce

1. Define a route using a wildcard parameter in the router setup:

   const Router = require('koa-router');
   const router = new Router();
   
   router.get(`/api/:token/:proxyPath*`, async (ctx) => {
       ctx.body = { message: 'Wildcard route works!' };
   });
   

2. Start the server and send a request matching the route (e.g., /api/123/some/path/to/resource).

3. Observe the error when running the application:

   TypeError: Missing parameter name at 49: https://git.new/pathToRegexpError
   

Expected Behavior

In koa-router v12 and earlier versions, the route defined with * correctly captured the remaining path segments. The server processed the request without errors.

Actual Behavior

With koa-router v13, the application throws the following error when using a wildcard route:

TypeError: Missing parameter name at 49: https://git.new/pathToRegexpError

Additional Information

• This behavior change does not seem to be documented in the release notes.

• I’ve reviewed the migration guide but couldn’t find details regarding this specific change or deprecation of wildcard support.

Questions

1. Is this a bug introduced in v13, or was the behavior of wildcard parameters intentionally changed or removed?

2. How can I achieve similar functionality (capturing all remaining path segments) in koa-router v13?

3. If this is not supported in v13, is there an alternative approach or a recommended workaround?

Thank you for your assistance!