feat(replay): Expose recordingMode in public API

packages/replay-internal/src/integration.ts

@@ -1,5 +1,11 @@
 import { parseSampleRate } from '@sentry/core';
-import type { BrowserClientReplayOptions, Client, Integration, IntegrationFn } from '@sentry/types';
+import type {
+  BrowserClientReplayOptions,
+  Client,
+  Integration,
+  IntegrationFn,
+  ReplayRecordingMode,
+} from '@sentry/types';
 import { consoleSandbox, dropUndefinedKeys, isBrowser } from '@sentry/utils';
 
 import {
@@ -297,6 +303,22 @@ export class Replay implements Integration {
     return this._replay.getSessionId();
   }
 
+  /**
+   * Get the current recording mode. This can be either `session` or `buffer`.
+   *
+   * `session`: Recording the whole session, sending it continuously
+   * `buffer`: Always keeping the last 60s of recording, requires:
+   *   - having replaysOnErrorSampleRate > 0 to capture replay when an error occurs
+   *   - or calling `flush()` to send the replay
+   */
+  public getRecordingMode(): ReplayRecordingMode | undefined {
+    if (!this._replay || !this._replay.isEnabled()) {
+      return;
+    }
+
+    return this._replay.recordingMode;
+  }
+
   /**
    * Initializes replay.
    */

packages/replay-internal/src/replay.ts

@@ -74,7 +74,7 @@ export class ReplayContainer implements ReplayContainerInterface {
   public clickDetector: ClickDetector | undefined;
 
   /**
-   * Recording can happen in one of three modes:
+   * Recording can happen in one of two modes:
    *   - session: Record the whole session, sending it continuously
    *   - buffer: Always keep the last 60s of recording, requires:
    *     - having replaysOnErrorSampleRate > 0 to capture replay when an error occurs

packages/replay-internal/test/integration/recordingMode.test.ts

@@ -0,0 +1,83 @@
+/**
+ * @vitest-environment jsdom
+ */
+
+import { describe, expect, test } from 'vitest';
+import { resetSdkMock } from '../mocks/resetSdkMock';
+import { useFakeTimers } from '../utils/use-fake-timers';
+
+useFakeTimers();
+
+describe('Integration | getRecordingMode()', () => {
+  test('returns "session" when session sampling is enabled', async () => {
+    const { integration } = await resetSdkMock({
+      replayOptions: {
+        stickySession: false,
+      },
+      sentryOptions: {
+        replaysSessionSampleRate: 1.0,
+      },
+    });
+    expect(integration.getRecordingMode()).toBe('session');
+  });
+
+  test('returns "buffer" when buffering is enabled', async () => {
+    const { integration, replay } = await resetSdkMock({
+      replayOptions: {
+        stickySession: false,
+      },
+      sentryOptions: {
+        replaysSessionSampleRate: 1.0,
+      },
+    });
+    replay.stop();
+    replay.startBuffering();
+    expect(integration.getRecordingMode()).toBe('buffer');
+  });
+
+  test('returns undefined when replay is stopped', async () => {
+    const { integration, replay } = await resetSdkMock({
+      replayOptions: {
+        stickySession: false,
+      },
+      sentryOptions: {
+        replaysSessionSampleRate: 1.0,
+      },
+    });
+    replay.stop();
+    expect(integration.getRecordingMode()).toBeUndefined();
+  });
+
+  test('returns undefined when session sampling is disabled', async () => {
+    const { integration } = await resetSdkMock({
+      replayOptions: { stickySession: false },
+      sentryOptions: {
+        replaysSessionSampleRate: 0.0,
+        replaysOnErrorSampleRate: 0.0,
+      },
+    });
+    expect(integration.getRecordingMode()).toBeUndefined();
+  });
+
+  test('returns "buffer" when session rate is 0 and onError rate is 1', async () => {
+    const { integration } = await resetSdkMock({
+      replayOptions: { stickySession: false },
+      sentryOptions: {
+        replaysSessionSampleRate: 0.0,
+        replaysOnErrorSampleRate: 1.0,
+      },
+    });
+    expect(integration.getRecordingMode()).toBe('buffer');
+  });
+
+  test('returns "session" when both sampling rates are 1', async () => {
+    const { integration } = await resetSdkMock({
+      replayOptions: { stickySession: false },
+      sentryOptions: {
+        replaysSessionSampleRate: 1.0,
+        replaysOnErrorSampleRate: 1.0,
+      },
+    });
+    expect(integration.getRecordingMode()).toBe('session');
+  });
+});