feat(flags): show ff index and generic integration doc for serverside JS (#14328)

In
[9.31.0](https://github.com/getsentry/sentry-javascript/releases/tag/9.31.0)
JS SDK we started supporting `featureFlagsIntegration` in node. This PR
shows the FF index page in node platforms with only this integration
linked:
<img width="1013" height="966" alt="Screenshot 2025-07-10 at 4 26 26 PM"
src="https://github.com/user-attachments/assets/c9420892-d5af-451f-a8cc-7f3515990141"
/>

And shows the `featureFlagsIntegration` page for node platforms, with
9.31.0 as the min version.

Deno (server):
<img width="692" height="1165" alt="Screenshot 2025-07-10 at 4 46 35 PM"
src="https://github.com/user-attachments/assets/390e5c30-58e5-46ef-973f-15b73d8d1825"
/>

React (browser):
<img width="707" height="1070" alt="Screenshot 2025-07-10 at 4 45 21 PM"
src="https://github.com/user-attachments/assets/ef12a5e7-76eb-47e5-b75b-07562f57ebae"
/>

Author: aliu39

docs/platforms/dart/common/feature-flags/index.mdx

@@ -10,16 +10,4 @@ description: With Feature Flags, Sentry tracks feature flag evaluations in your
 
 ## Enable Evaluation Tracking
 
-If you use a third-party SDK to evaluate feature flags, you can enable Sentry to track those evaluations. Integrations are provider specific, and documentation for supported SDKs is listed below:
-
-- [Firebase Remote Config](/platforms/dart/configuration/integrations/firebase-remote-config/)
-
-### Manual Usage
-
-Call `Sentry.addFeatureFlag` to track feature flag evaluations:
-
-```dart
-Sentry.addFeatureFlag("feature_flag_a", true);
-```
-
-Calling this function multiple times with the same flag name will override the previous value.
+<PlatformContent includePath="feature-flags/evaluation-tracking-index" />

docs/platforms/javascript/common/configuration/integrations/featureflags.mdx

@@ -1,43 +1,13 @@
 ---
 title: Generic Feature Flags Integration
 description: "Learn how to attach custom feature flag data to Sentry error events."
-notSupported:
-  - javascript.aws-lambda
-  - javascript.azure-functions
-  - javascript.bun
-  - javascript.capacitor
-  - javascript.cloudflare
-  - javascript.connect
-  - javascript.cordova
-  - javascript.deno
-  - javascript.electron
-  - javascript.express
-  - javascript.fastify
-  - javascript.gcp-functions
-  - javascript.hapi
-  - javascript.hono
-  - javascript.koa
-  - javascript.nestjs
-  - javascript.node
-  - javascript.wasm
 ---
 
-<Alert>
-
-This integration only works inside a browser environment. It is only available from a package-based install (e.g. `npm` or `yarn`).
-
-</Alert>
-
-<Alert level ="info">
-
-If you are using an external feature flag provider, refer to the [supported list](/platforms/javascript/feature-flags/#enable-evaluation-tracking) before setting up this integration.
-
-</Alert>
-
 The Feature Flags integration allows you to manually track feature flag evaluations through an API.
 These evaluations are held in memory and sent to Sentry on error and transaction events.
-**At the moment, we only support boolean flag evaluations.** This integration is available in
-Sentry SDK **versions 8.43.0 or higher.**
+**At the moment, we only support boolean flag evaluations.**
+
+<PlatformContent includePath="feature-flags/integrations/js-featureflags/min-version" />
 
 _Import names: `Sentry.featureFlagsIntegration` and `type Sentry.FeatureFlagsIntegration`_
 

docs/platforms/javascript/common/configuration/integrations/openfeature.mdx

@@ -20,7 +20,6 @@ notSupported:
   - javascript.nestjs
   - javascript.node
   - javascript.wasm
-  - javascript.tanstackstart-react
 ---
 
 <Alert>

docs/platforms/javascript/common/feature-flags/index.mdx

@@ -2,25 +2,6 @@
 title: Set Up Feature Flags
 sidebar_title: Feature Flags
 sidebar_order: 7000
-notSupported:
-  - javascript.aws-lambda
-  - javascript.azure-functions
-  - javascript.bun
-  - javascript.capacitor
-  - javascript.cloudflare
-  - javascript.connect
-  - javascript.cordova
-  - javascript.deno
-  - javascript.electron
-  - javascript.express
-  - javascript.fastify
-  - javascript.gcp-functions
-  - javascript.hapi
-  - javascript.hono
-  - javascript.koa
-  - javascript.nestjs
-  - javascript.node
-  - javascript.wasm
 description: With Feature Flags, Sentry tracks feature flag evaluations in your application, keeps an audit log of feature flag changes, and reports any suspicious updates that may have caused an error.
 ---
 
@@ -30,17 +11,8 @@ description: With Feature Flags, Sentry tracks feature flag evaluations in your
 
 ## Enable Evaluation Tracking
 
-If you use a third-party SDK to evaluate feature flags, you can enable a Sentry SDK integration to track those evaluations. Integrations are provider specific. Documentation for supported SDKs is listed below.
-
-- [LaunchDarkly](/platforms/javascript/configuration/integrations/launchdarkly/)
-- [OpenFeature](/platforms/javascript/configuration/integrations/openfeature/) (multiple providers supported)
-- [Statsig](/platforms/javascript/configuration/integrations/statsig/)
-- [Unleash](/platforms/javascript/configuration/integrations/unleash/)
-
-### Generic Integration
-
-The generic `featureFlagsIntegration` allows you to manually track feature flag evaluations. Read the [documentation](/platforms/javascript/configuration/integrations/featureflags/) to learn more.
+<PlatformContent includePath="feature-flags/evaluation-tracking-index" />
 
 ## Enable Change Tracking
 
-<PlatformContent includePath="feature-flags/change-tracking-list" />
+<PlatformContent includePath="feature-flags/change-tracking-index" />

docs/platforms/python/feature-flags/index.mdx

@@ -11,27 +11,8 @@ description: With Feature Flags, Sentry tracks feature flag evaluations in your
 
 ## Enable Evaluation Tracking
 
-If you use a third-party SDK to evaluate feature flags, you can enable a Sentry SDK integration to track those evaluations. Integrations are provider specific. Documentation for supported SDKs is listed below.
-
-- [LaunchDarkly](/platforms/python/integrations/launchdarkly/)
-- [OpenFeature](/platforms/python/integrations/openfeature/) (multiple providers supported)
-- [Statsig](/platforms/python/integrations/statsig/)
-- [Unleash](/platforms/python/integrations/unleash/)
-
-### Generic API
-If you use an unsupported solution, you can use the generic API to manually track feature flag evaluations. These evaluations are held in memory and are sent to Sentry on error and transaction events. **At the moment, we only support boolean flag evaluations.**
-
-```python
-import sentry_sdk
-from sentry_sdk.feature_flags import add_feature_flag
-
-add_feature_flag('test-flag', False)  # Records an evaluation and its result.
-
-sentry_sdk.capture_exception(Exception("Something went wrong!"))
-```
-
-Go to your Sentry project and confirm that your error event has recorded the feature flag "test-flag" and its value "false".
+<PlatformContent includePath="feature-flags/evaluation-tracking-index" />
 
 ## Enable Change Tracking
 
-<PlatformContent includePath="feature-flags/change-tracking-list" />
+<PlatformContent includePath="feature-flags/change-tracking-index" />

docs/product/issues/issue-details/feature-flags/index.mdx

@@ -10,19 +10,19 @@ Feature flag change tracking and feature flag evaluation tracking is currently i
 
 </Alert>
 
-Enabling a feature flag integration provides deep insights into the state of your application prior to an error. A list of flags and their evaluation results are displayed on each error event in the order of evaluation. 
+Enabling a feature flag integration provides deep insights into the state of your application prior to an error. A list of flags and their evaluation results are displayed on each error event in the order of evaluation.
 
 Integrating Sentry with your feature flag provider enables Sentry to correlate feature flag changes with new error events and mark certain changes as suspicious.
 
 ## Evaluation Tracking
 
-Flag evaluations will appear in the "Feature Flag" section of Issue Details page as a table, with "suspect" flag predictions highlighted in yellow. 
+Flag evaluations will appear in the "Feature Flag" section of Issue Details page as a table, with "suspect" flag predictions highlighted in yellow.
 
 ![Flag Change Suspect](./img/SuspectFlag.png)
 
 For each event, we track the 100 most recently evaluated flags leading up to the error. Learn more about how to interact with feature flag insights within the Sentry UI by reading the [Issue Details page documentation](/product/issues/issue-details/#feature-flags).
 
-Setting up evaluation tracking also allows you to use Issues Search in conjunction with feature flags. On Issues Search, using the `flags` keyword will allow you to filter for issues containing errors where the feature flag evaluated value is true or false. 
+Setting up evaluation tracking also allows you to use Issues Search in conjunction with feature flags. On Issues Search, using the `flags` keyword will allow you to filter for issues containing errors where the feature flag evaluated value is true or false.
 
 ![Flag Change Search](./img/FlagsSearch.png)
 
@@ -44,20 +44,20 @@ This view is useful for diagnosing the impacted audience of feature flag changes
 
 ## Change Tracking
 
-Change tracking enables Sentry to listen for additions, removals, and modifications to your feature flags. On change, we'll record the change event in the audit log. 
+Change tracking enables Sentry to listen for additions, removals, and modifications to your feature flags. On change, we'll record the change event in the audit log.
 
 ![Flag Change Tracking](./img/FlagChangeTracking.png)
 
-Within an issue, the audit log is represented in the "event" chart and presents itself as a "release" line. 
+Within an issue, the audit log is represented in the "event" chart and presents itself as a "release" line.
 
 ![Flag Change Issue](./img/FlagChangeIssue.png)
 
-If the change is responsible for a new error event, we'll notify you by marking the feature flag as "suspect" on the Issue Details page. 
+If the change is responsible for a new error event, we'll notify you by marking the feature flag as "suspect" on the Issue Details page.
 
 ![Flag Change Suspect](./img/SuspectFlag.png)
 
 Learn more about how to interact with feature flag insights within the Sentry UI by reading the [Issue Details documentation](/product/issues/issue-details/#feature-flags).
 
 ### Set Up Change Tracking
 
-<PlatformContent includePath="feature-flags/change-tracking-list" platform="_default"/>
+<PlatformContent includePath="feature-flags/change-tracking-index" platform="_default"/>

platform-includes/configuration/featureflags/javascript.aws-lambda.mdx

@@ -0,0 +1,16 @@
+```typescript
+import * as Sentry from '@sentry/aws-lambda';
+
+Sentry.init({
+  dsn: '___PUBLIC_DSN___',
+  integrations: [Sentry.featureFlagsIntegration()]
+});
+
+const flagsIntegration = Sentry.getClient()?.getIntegrationByName<Sentry.FeatureFlagsIntegration>('FeatureFlags');
+if (flagsIntegration) {
+  flagsIntegration.addFeatureFlag('test-flag', false);
+} else {
+  // Something went wrong, check your DSN and/or integrations
+}
+Sentry.captureException(new Error('Something went wrong!'));
+```

platform-includes/configuration/featureflags/javascript.azure-functions.mdx

@@ -0,0 +1,16 @@
+```typescript
+import * as Sentry from '@sentry/azure-functions';
+
+Sentry.init({
+  dsn: '___PUBLIC_DSN___',
+  integrations: [Sentry.featureFlagsIntegration()]
+});
+
+const flagsIntegration = Sentry.getClient()?.getIntegrationByName<Sentry.FeatureFlagsIntegration>('FeatureFlags');
+if (flagsIntegration) {
+  flagsIntegration.addFeatureFlag('test-flag', false);
+} else {
+  // Something went wrong, check your DSN and/or integrations
+}
+Sentry.captureException(new Error('Something went wrong!'));
+```

platform-includes/configuration/featureflags/javascript.bun.mdx

@@ -0,0 +1,16 @@
+```typescript
+import * as Sentry from '@sentry/bun';
+
+Sentry.init({
+  dsn: '___PUBLIC_DSN___',
+  integrations: [Sentry.featureFlagsIntegration()]
+});
+
+const flagsIntegration = Sentry.getClient()?.getIntegrationByName<Sentry.FeatureFlagsIntegration>('FeatureFlags');
+if (flagsIntegration) {
+  flagsIntegration.addFeatureFlag('test-flag', false);
+} else {
+  // Something went wrong, check your DSN and/or integrations
+}
+Sentry.captureException(new Error('Something went wrong!'));
+```

platform-includes/configuration/featureflags/javascript.capacitor.mdx

@@ -0,0 +1,16 @@
+```typescript
+import * as Sentry from '@sentry/capacitor';
+
+Sentry.init({
+  dsn: '___PUBLIC_DSN___',
+  integrations: [Sentry.featureFlagsIntegration()]
+});
+
+const flagsIntegration = Sentry.getClient()?.getIntegrationByName<Sentry.FeatureFlagsIntegration>('FeatureFlags');
+if (flagsIntegration) {
+  flagsIntegration.addFeatureFlag('test-flag', false);
+} else {
+  // Something went wrong, check your DSN and/or integrations
+}
+Sentry.captureException(new Error('Something went wrong!'));
+```