cli: switch package discovery to use global

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/cli/src/lib/bundler/packageDetection.ts

@@ -96,7 +96,7 @@ async function writeDetectedPackagesModule(packageNames: string[]) {
       'node_modules',
       `${DETECTED_MODULES_MODULE_NAME}.js`,
     ),
-    `export const modules = [${requirePackageScript}];`,
+    `window['__@backstage/discovered__'] = { modules: [${requirePackageScript}] };`,
   );
 }
 

packages/frontend-app-api/src/discover/index.ts

@@ -16,15 +16,22 @@
 
 import { BackstagePlugin } from '@backstage/frontend-plugin-api';
 
-// eslint-disable-next-line @backstage/no-undeclared-imports
-import { modules } from '__backstage-autodetected-plugins__';
+interface DiscoveryGlobal {
+  modules: Array<{ name: string; module: object }>;
+}
 
 /**
  * @public
  */
 export function getAvailablePlugins(): BackstagePlugin[] {
-  return modules.flatMap(({ module: mod }) =>
-    Object.values(mod).flatMap(val => (isBackstagePlugin(val) ? [val] : [])),
+  const discovered = (
+    window as { '__@backstage/discovered__'?: DiscoveryGlobal }
+  )['__@backstage/discovered__'];
+
+  return (
+    discovered?.modules.flatMap(({ module: mod }) =>
+      Object.values(mod).flatMap(val => (isBackstagePlugin(val) ? [val] : [])),
+    ) ?? []
   );
 }