docs: remove function call from all backend feature installation instructions

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

.changeset/shy-olives-swim.md

@@ -0,0 +1,11 @@
+---
+'@backstage/backend-dynamic-feature-service': patch
+'@backstage/plugin-search-backend-module-techdocs': patch
+'@backstage/plugin-search-backend-module-catalog': patch
+'@backstage/plugin-search-backend-module-explore': patch
+'@backstage/plugin-events-backend-module-github': patch
+'@backstage/plugin-events-backend-module-gitlab': patch
+'@backstage/plugin-events-node': patch
+---
+
+Updated backend installation instructions.

docs/backend-system/architecture/02-backends.md

@@ -24,7 +24,7 @@ const backend = createBackend();
 backend.add(import('@backstage/plugin-catalog-backend/alpha'));
 
 // Features can also be installed using an explicit reference
-backend.add(scaffolderPlugin());
+backend.add(scaffolderPlugin);
 
 // Start up the backend
 backend.start();

docs/backend-system/architecture/04-plugins.md

@@ -41,7 +41,7 @@ The `createBackendPlugin` return value is exported as `examplePlugin`, which is
 ```ts
 import { examplePlugin } from 'backstage-plugin-example-backend';
 
-backend.add(examplePlugin());
+backend.add(examplePlugin);
 ```
 
 By convention every plugin package should export its plugin instance as the default export from the package:

docs/backend-system/building-backends/08-migrating.md

@@ -675,7 +675,7 @@ backend.add(
   import('@backstage/plugin-catalog-backend-module-scaffolder-entity-model'),
 );
 /* highlight-add-next-line */
-backend.add(catalogModuleCustomExtensions());
+backend.add(catalogModuleCustomExtensions);
 ```
 
 This also requires that you have a dependency on the corresponding node package,
@@ -762,9 +762,9 @@ const otherPluginModuleCustomExtensions = createBackendModule({
 const backend = createBackend();
 backend.add(import('@backstage/plugin-events-backend/alpha'));
 /* highlight-add-next-line */
-backend.add(eventsModuleCustomExtensions());
+backend.add(eventsModuleCustomExtensions);
 /* highlight-add-next-line */
-backend.add(otherPluginModuleCustomExtensions());
+backend.add(otherPluginModuleCustomExtensions);
 ```
 
 Here we've placed the module directly in the backend index file just to get
@@ -841,7 +841,7 @@ const scaffolderModuleCustomExtensions = createBackendModule({
 const backend = createBackend();
 backend.add(import('@backstage/plugin-scaffolder-backend/alpha'));
 /* highlight-add-next-line */
-backend.add(scaffolderModuleCustomExtensions());
+backend.add(scaffolderModuleCustomExtensions);
 ```
 
 This also requires that you have a dependency on the corresponding node package,

docs/features/software-templates/writing-templates.md

@@ -891,7 +891,7 @@ const scaffolderModuleCustomFilters = createBackendModule({
 const backend = createBackend();
 backend.add(import('@backstage/plugin-scaffolder-backend/alpha'));
 /* highlight-add-next-line */
-backend.add(scaffolderModuleCustomFilters());
+backend.add(scaffolderModuleCustomFilters);
 ```
 
 If you still use the legacy backend system, then you will use the `createRouter()` function of the `Scaffolder plugin`

docs/features/techdocs/how-to-guides.md

@@ -800,7 +800,7 @@ const techdocsCustomBuildStrategy = createBackendModule({
 
 /* highlight-add-start */
 backend.add(import('@backstage/plugin-techdocs-backend/alpha'));
-backend.add(techdocsCustomBuildStrategy());
+backend.add(techdocsCustomBuildStrategy);
 /* highlight-add-end */
 
 backend.start();

docs/integrations/github/org.md

@@ -169,7 +169,7 @@ const backend = createBackend();
 
 backend.add(import('@backstage/plugin-catalog-backend/alpha'));
 
-backend.add(githubOrgModule());
+backend.add(githubOrgModule);
 
 backend.start();
 ```

docs/integrations/gitlab/discovery.md

@@ -34,9 +34,9 @@ Then add the following to your backend initialization:
 // optional if you want to use AWS SQS instead of HTTP endpoints to receive external events
 // backend.add(import('@backstage/plugin-events-backend-module-aws-sqs/alpha'));
 // optional - event router for gitlab. See.: https://github.com/backstage/backstage/blob/master/plugins/events-backend-module-gitlab/README.md
-// backend.add(eventsModuleGitlabEventRouter());
+// backend.add(eventsModuleGitlabEventRouter);
 // optional - token validator for the gitlab topic
-// backend.add(eventsModuleGitlabWebhook());
+// backend.add(eventsModuleGitlabWebhook);
 backend.add(import('@backstage/plugin-catalog-backend-module-gitlab/alpha'));
 ```
 

docs/integrations/gitlab/org.md

@@ -39,9 +39,9 @@ Then add the following to your backend initialization:
 // optional if you want to use AWS SQS instead of HTTP endpoints to receive external events
 // backend.add(import('@backstage/plugin-events-backend-module-aws-sqs/alpha'));
 // optional - event router for gitlab. See.: https://github.com/backstage/backstage/blob/master/plugins/events-backend-module-gitlab/README.md
-// backend.add(eventsModuleGitlabEventRouter());
+// backend.add(eventsModuleGitlabEventRouter);
 // optional - token validator for the gitlab topic
-// backend.add(eventsModuleGitlabWebhook());
+// backend.add(eventsModuleGitlabWebhook);
 backend.add(import('@backstage/plugin-catalog-backend-module-gitlab-org'));
 ```
 

docs/plugins/new-backend-system.md

@@ -101,7 +101,7 @@ export const examplePlugin = createBackendPlugin({
 The plugin can then be installed in the backend using the returned plugin factory function:
 
 ```ts
-backend.add(examplePlugin());
+backend.add(examplePlugin);
 ```
 
 If we wanted our plugin to accept options as well, we'd accept the options as the second parameter of the register method:
@@ -266,7 +266,7 @@ class GoogleCloudLogger implements LoggerService {
 const backend = createBackend();
 
 // supplies additional or replacement services to the backend
-backend.add(GoogleCloudLogger.factory());
+backend.add(GoogleCloudLogger.factory);
 ```
 
 ## Testing

packages/backend-dynamic-feature-service/README.md

@@ -15,8 +15,8 @@ In the `backend` application, it can be enabled by adding the `backend-dynamic-f
 ```ts
 const backend = createBackend();
 +
-+ backend.add(dynamicPluginsFeatureDiscoveryServiceFactory()) // overridden version of the FeatureDiscoveryService which provides features loaded by dynamic plugins
-+ backend.add(dynamicPluginsServiceFactory())
++ backend.add(dynamicPluginsFeatureDiscoveryServiceFactory) // overridden version of the FeatureDiscoveryService which provides features loaded by dynamic plugins
++ backend.add(dynamicPluginsServiceFactory)
 +
 ```
 

plugins/events-backend-module-github/README.md

@@ -33,7 +33,7 @@ yarn --cwd packages/backend add @backstage/plugin-events-backend-module-github
 // packages/backend/src/index.ts
 import { eventsModuleGithubEventRouter } from '@backstage/plugin-events-backend-module-github/alpha';
 // ...
-backend.add(eventsModuleGithubEventRouter());
+backend.add(eventsModuleGithubEventRouter);
 ```
 
 #### Legacy Backend System
@@ -50,7 +50,7 @@ await eventRouter.subscribe();
 // packages/backend/src/index.ts
 import { eventsModuleGithubWebhook } from '@backstage/plugin-events-backend-module-github/alpha';
 // ...
-backend.add(eventsModuleGithubWebhook());
+backend.add(eventsModuleGithubWebhook);
 ```
 
 #### Legacy Backend System

plugins/events-backend-module-gitlab/README.md

@@ -32,7 +32,7 @@ yarn --cwd packages/backend add @backstage/plugin-events-backend-module-gitlab
 // packages/backend/src/index.ts
 import { eventsModuleGitlabEventRouter } from '@backstage/plugin-events-backend-module-gitlab/alpha';
 // ...
-backend.add(eventsModuleGitlabEventRouter());
+backend.add(eventsModuleGitlabEventRouter);
 ```
 
 #### Legacy Backend System
@@ -49,7 +49,7 @@ await eventRouter.subscribe();
 // packages/backend/src/index.ts
 import { eventsModuleGitlabWebhook } from '@backstage/plugin-events-backend-module-gitlab/alpha';
 // ...
-backend.add(eventsModuleGitlabWebhook());
+backend.add(eventsModuleGitlabWebhook);
 ```
 
 #### Legacy Backend System

plugins/events-node/README.md

@@ -78,5 +78,5 @@ and your custom implementation:
 
 ```diff
 // packages/backend/src/index.ts
-+  backend.add(customEventsServiceFactory());
++  backend.add(customEventsServiceFactory);
 ```

plugins/search-backend-module-catalog/README.md

@@ -20,8 +20,8 @@ import { searchPlugin } from '@backstage/plugin-search-backend/alpha';
 import { searchModuleCatalogCollator } from '@backstage/plugin-search-backend-module-catalog/alpha';
 
 const backend = createBackend();
-backend.add(searchPlugin());
-backend.add(searchModuleCatalogCollator());
+backend.add(searchPlugin);
+backend.add(searchModuleCatalogCollator);
 backend.start();
 ```
 
@@ -54,8 +54,8 @@ const customTransformer: CatalogCollatorEntityTransformer = entity => ({
 });
 
 const backend = createBackend();
-backend.add(searchPlugin());
-backend.add(searchModuleCatalogCollator());
+backend.add(searchPlugin);
+backend.add(searchModuleCatalogCollator);
 backend.add(
   createBackendModule({
     pluginId: 'search',

plugins/search-backend-module-explore/README.md

@@ -20,8 +20,8 @@ import { searchPlugin } from '@backstage/plugin-search-backend/alpha';
 import { searchModuleExploreCollator } from '@backstage/plugin-search-backend-module-explore/alpha';
 
 const backend = createBackend();
-backend.add(searchPlugin());
-backend.add(searchModuleExploreCollator());
+backend.add(searchPlugin);
+backend.add(searchModuleExploreCollator);
 backend.start();
 ```
 

plugins/search-backend-module-techdocs/README.md

@@ -20,8 +20,8 @@ import { searchPlugin } from '@backstage/plugin-search-backend/alpha';
 import { searchModuleTechDocsCollator } from '@backstage/plugin-search-backend-module-techdocs/alpha';
 
 const backend = createBackend();
-backend.add(searchPlugin());
-backend.add(searchModuleTechDocsCollator());
+backend.add(searchPlugin);
+backend.add(searchModuleTechDocsCollator);
 backend.start();
 ```