@strapi/plugin-sdk package.json validation too aggressive, cannot add additional exports

[xenobytezero]

Bug report

Required System information

• Node.js version: 22.12.0
• NPM version: 10.9.0
• Strapi version: 5.6.0
• Database: MySQL
• Operating system: Windows 11
• Is your project Javascript or Typescript: Typescript

Describe the bug

When updating my plugins, I want to also export from the package a collection of types that can be used by developers/users of the plugin (things like the shape of the Config, shape of endpoint data, etc).

Now that Strapi v5 has switched to using the exports map I wanted to add my types to this export map.

    "exports": {
        "./package.json": "./package.json",
        "./strapi-admin": {
            "types": "./dist/admin/src/index.d.ts",
            "source": "./admin/src/index.ts",
            "import": "./dist/admin/index.mjs",
            "require": "./dist/admin/index.js",
            "default": "./dist/admin/index.js"
        },
        "./strapi-server": {
            "types": "./dist/server/src/index.d.ts",
            "source": "./server/src/index.ts",
            "import": "./dist/server/index.mjs",
            "require": "./dist/server/index.js",
            "default": "./dist/server/index.js"
        },
        "./types/*": "./dist-types/*.d.ts" // <--- Addition
    }

After adding it, trying to build/watch with the @strapi/plugin-sdk (strapi-plugin build) I get the following error

[ERROR] There seems to be an unexpected error, try again with --debug for more information 

 ┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────┐│                                                                                                             
││   ValidationError: exports["./types/*"] must match the following: "/^\.\/.*\.json$/"                        
││   at createError (C:\Projects\GESDev\ges-v2\packages\editorjs\strapi-plugin-react-editorjs\node_modules\y   ││   up\lib\util\createValidation.js:54:21)                                                                    
││   at C:\Projects\GESDev\ges-v2\packages\editorjs\strapi-plugin-react-editorjs\node_modules\yup\lib\util\c   ││   reateValidation.js:72:107                                                                                 
││                                                                                                             
│└─────────────────────────────────────────────────────────────────────────────────────────────────────────────┘

I also tried to use the object form of an export entry, and got a similar error, indicating that it had to use the same format as the strapi-admin/strapi-server objects, which doesn't work in this case.

[github-actions]

This is a templated message

Hello @xenobytezero,

I see you are wanting to ask a question that is not really a bug report,

• questions should be directed to our forum or our Discord
• feature requests should be directed to our feedback and feature request database

Please see the following contributing guidelines for asking a question here.

Thank you.

[derrickmehaffy]

Transferred to correct repo

[Boegie19]

Also no documented way to add custom exports

[axe312ger]

Would love to see this fixed, it prevents me from exporting my stylesheets!

My plugin is very barebone, it includes just a little css. It bundles and works as expected.

But as soon I add this to my package.json:

"exports": {
      ...
    "./dist/style.css": "./dist/style.css"
  },

I get: │ ValidationError: exports["./dist/style.css"] must match the following: "/^\.\/.*\.json$/" │

Which is really unfortunate, because vite needs this to accept my css file as an import:

[plugin:vite:css] [postcss] Missing "./dist/style.css" specifier in "strapi-plugin-lexical" package

@import "strapi-plugin-lexical/dist/style.css";

import "strapi-plugin-lexical/dist/style.css";