Multiple sidebars

It would be great to be able to extend Nextra to support multiple sidebars.

I think it’s possible to do this a few ways. One would be to specify root json files in a theme config.

// theme.config.js
export default {
  ...
  sidebars: {
   reference: "reference.json"
   docs: "docs.json"
  }
}

Another way would be to use a filename prefix for the route’s metadata files. If found, and if matching the prefix, it would then look for matches during the traversal.

- index.md
- meta.json  
- docs-meta.json
-- docs/
--- docs-meta.json
--- index.md
--- guides/
----- docs-meta.json
----- index.md

[jaredpalmer]

reactnative.dev

[shuding]

The latest nextra-theme-docs now has a floatingTOC: true option to achieve this, example: https://swr.vercel.app/blog/swr-v1. We can close this now!