** What
- Allow auto-loaded Medusa files to export a config object.
- Currently supports isDisabled to control loading.
- new instance `FeatureFlag` exported by `@medusajs/framework/utils`
- `feature-flags` is now a supported folder for medusa projects, modules, providers and plugins. They will be loaded and added to `FeatureFlag`
** Why
- Enables conditional loading of routes, migrations, jobs, subscribers, workflows, and other files based on feature flags.
```ts
// /src/feature-flags
import { FlagSettings } from "@medusajs/framework/feature-flags"
const CustomFeatureFlag: FlagSettings = {
key: "custom_feature",
default_val: false,
env_key: "FF_MY_CUSTOM_FEATURE",
description: "Enable xyz",
}
export default CustomFeatureFlag
```
```ts
// /src/modules/my-custom-module/migration/Migration20250822135845.ts
import { FeatureFlag } from "@medusajs/framework/utils"
export class Migration20250822135845 extends Migration {
override async up(){ }
override async down(){ }
}
defineFileConfig({
isDisabled: () => !FeatureFlag.isFeatureEnabled("custom_feature")
})
```
Fixes: FRMW-2762
This PR fixes the error reporting to include the original error message and the error cause when logging it using the JSON formatter of Winston.
> Side note: There is still a lot of room for improvements in our logging. But that require a overhaul cleanup in multiple places and will require dedicated loggers for commands and APP and special treatment for pretty printing errors.
## Error output in JSON format
**Before**
**After**
