**What**
- Reworks how admin extensions are loaded from plugins.
- Reworks how extensions are managed internally in the dashboard project.
**Why**
- Previously we loaded extensions from plugins the same way we do for extension found in a users application. This being scanning the source code for possible extensions in `.medusa/server/src/admin`, and including any extensions that were discovered in the final virtual modules.
- This was causing issues with how Vite optimizes dependencies, and would lead to CJS/ESM issues. Not sure of the exact cause of this, but the issue was pinpointed to Vite not being able to register correctly which dependencies to optimize when they were loaded through the virtual module from a plugin in `node_modules`.
**What changed**
- To circumvent the above issue we have changed to a different strategy for loading extensions from plugins. The changes are the following:
- We now build plugins slightly different, if a plugin has admin extensions we now build those to `.medusa/server/src/admin/index.mjs` and `.medusa/server/src/admin/index.js` for a ESM and CJS build.
- When determining how to load extensions from a source we follow these rules:
- If the source has a `medusa-plugin-options.json` or is the root application we determine that it is a `local` extension source, and load extensions as previously through a virtual module.
- If it has neither of the above, but has a `./admin` export in its package.json then we determine that it is a `package` extension, and we update the entry point for the dashboard to import the package and pass its extensions a long to the dashboard manager.
**Changes required by plugin authors**
- The change has no breaking changes, but requires plugin authors to update the `package.json` of their plugins to also include a `./admin` export. It should look like this:
```json
{
"name": "@medusajs/plugin",
"version": "0.0.1",
"description": "A starter for Medusa plugins.",
"author": "Medusa (https://medusajs.com)",
"license": "MIT",
"files": [
".medusa/server"
],
"exports": {
"./package.json": "./package.json",
"./workflows": "./.medusa/server/src/workflows/index.js",
"./.medusa/server/src/modules/*": "./.medusa/server/src/modules/*/index.js",
"./modules/*": "./.medusa/server/src/modules/*/index.js",
"./providers/*": "./.medusa/server/src/providers/*/index.js",
"./*": "./.medusa/server/src/*.js",
"./admin": {
"import": "./.medusa/server/src/admin/index.mjs",
"require": "./.medusa/server/src/admin/index.js",
"default": "./.medusa/server/src/admin/index.js"
}
},
}
```
**What**
- Bumps the versions of Vite across the entire stack, to prevent an issue similar to what is described here: https://github.com/vitejs/vite/discussions/18271
Not entirely sure what was happening as I couldn't reproduce the issue, but Adrien faced the issue yesterday when working with local versions of our packages. It does appear as if the range we had before could lead to a version of Vite to be installed with said bug.
Should not be merged before https://github.com/medusajs/medusa/pull/10895
**What**
- Introduces a new `plugin` command to `admin-bundler`, currently not used anywhere but will be called from `medusa build:plugin`
- Discovers plugins with extensions and add passes the to `admin-vite-plugin`.
- Updates `admin-vite-plugin` so its able to read built admin extensions.
Resolves CMRC-830, CMRC-839
**What**
- Renames /admin-next -> /admin
- Renames @medusajs/admin-sdk -> @medusajs/admin-bundler
- Creates a new package called @medusajs/admin-sdk that will hold all tooling relevant to creating admin extensions. This is currently `defineRouteConfig` and `defineWidgetConfig`, but will eventually also export methods for adding custom fields, register translation, etc.
- cc: @shahednasser we should update the examples in the docs so these functions are imported from `@medusajs/admin-sdk`. People will also need to install the package in their project, as it's no longer a transient dependency.
- cc: @olivermrbl we might want to publish a changelog when this is merged, as it is a breaking change, and will require people to import the `defineXConfig` from the new package instead of `@medusajs/admin-shared`.
- Updates CODEOWNERS so /admin packages does not require a review from the UI team.
