core-api: add app components to app context

packages/core-api/src/app/App.tsx

@@ -153,6 +153,10 @@ class AppContextImpl implements AppContext {
     return this.app.getSystemIcon(key);
   }
 
+  getComponents(): AppComponents {
+    return this.app.getComponents();
+  }
+
   getProvider(): React.ComponentType<{}> {
     // eslint-disable-next-line no-console
     console.warn('appContext.getProvider() is deprecated and will be removed');
@@ -206,6 +210,10 @@ export class PrivateAppImpl implements BackstageApp {
     return this.icons[key];
   }
 
+  getComponents(): AppComponents {
+    return this.components;
+  }
+
   getRoutes(): JSX.Element[] {
     const routes = new Array<JSX.Element>();
 

packages/core-api/src/app/types.ts

@@ -202,6 +202,11 @@ export type AppContext = {
    */
   getSystemIcon(key: IconKey): IconComponent;
 
+  /**
+   * Get the components registered for various purposes in the app.
+   */
+  getComponents(): AppComponents;
+
   /**
    * @deprecated Will be removed
    */