feat(bun): Add initWithoutDefaultIntegrations and getDefaultIntegrationsWithoutPerformance

packages/bun/src/index.ts

@@ -198,7 +198,12 @@ export type { BunOptions } from './types';
 
 // eslint-disable-next-line typescript/no-deprecated
 export { BunClient } from './client';
-export { getDefaultIntegrations, init } from './sdk';
+export {
+  getDefaultIntegrations,
+  getDefaultIntegrationsWithoutPerformance,
+  init,
+  initWithoutDefaultIntegrations,
+} from './sdk';
 export { bunServerIntegration } from './integrations/bunserver';
 export { bunRuntimeMetricsIntegration, type BunRuntimeMetricsOptions } from './integrations/bunRuntimeMetrics';
 export { makeFetchTransport } from './transports';

packages/bun/src/sdk.ts

@@ -63,9 +63,9 @@ function getPerformanceIntegrations(options: Options): Integration[] {
   ];
 }
 
-/** Get the default integrations for the Bun SDK. */
-export function getDefaultIntegrations(options: Options): Integration[] {
-  // We return a copy of the defaultIntegrations here to avoid mutating this
+/** Get the default integrations for the Bun SDK, excluding performance integrations. */
+export function getDefaultIntegrationsWithoutPerformance(): Integration[] {
+  // Return a fresh array on each call so callers can safely mutate the result.
   return [
     // Common
     // TODO(v11): Replace with eventFiltersIntegration once we remove the deprecated `inboundFiltersIntegration`
@@ -88,10 +88,14 @@ export function getDefaultIntegrations(options: Options): Integration[] {
     processSessionIntegration(),
     // Bun Specific
     bunServerIntegration(),
-    ...getPerformanceIntegrations(options),
   ];
 }
 
+/** Get the default integrations for the Bun SDK. */
+export function getDefaultIntegrations(options: Options): Integration[] {
+  return [...getDefaultIntegrationsWithoutPerformance(), ...getPerformanceIntegrations(options)];
+}
+
 /**
  * The Sentry Bun SDK Client.
  *
@@ -137,6 +141,23 @@ export function getDefaultIntegrations(options: Options): Integration[] {
  * @see {@link BunOptions} for documentation on configuration options.
  */
 export function init(userOptions: BunOptions = {}): NodeClient | undefined {
+  return _init(userOptions, getDefaultIntegrations);
+}
+
+/**
+ * Initialize Sentry for Bun, without any integrations added by default.
+ */
+export function initWithoutDefaultIntegrations(userOptions: BunOptions = {}): NodeClient | undefined {
+  return _init(userOptions, () => []);
+}
+
+/**
+ * Internal initialization function.
+ */
+function _init(
+  userOptions: BunOptions = {},
+  getDefaultIntegrationsImpl: (options: Options) => Integration[],
+): NodeClient | undefined {
   applySdkMetadata(userOptions, 'bun');
 
   const options = {
@@ -148,9 +169,7 @@ export function init(userOptions: BunOptions = {}): NodeClient | undefined {
 
   options.transport = options.transport || makeFetchTransport;
 
-  if (options.defaultIntegrations === undefined) {
-    options.defaultIntegrations = getDefaultIntegrations(options);
-  }
+  options.defaultIntegrations = options.defaultIntegrations ?? getDefaultIntegrationsImpl(options);
 
   return initNode(options);
 }

packages/bun/test/init.test.ts

@@ -2,7 +2,13 @@ import { type Integration } from '@sentry/core';
 import * as sentryNode from '@sentry/node';
 import type { Mock } from 'bun:test';
 import { afterEach, beforeEach, describe, expect, it, mock, spyOn } from 'bun:test';
-import { getClient, init } from '../src';
+import {
+  getClient,
+  getDefaultIntegrations,
+  getDefaultIntegrationsWithoutPerformance,
+  init,
+  initWithoutDefaultIntegrations,
+} from '../src';
 
 const PUBLIC_DSN = 'https://username@domain/123';
 
@@ -123,4 +129,47 @@ describe('init()', () => {
       expect(integrations?.map(({ name }) => name)).toContain('Some mock integration 4.3');
     });
   });
+
+  describe('initWithoutDefaultIntegrations()', () => {
+    it('installs no default integrations', () => {
+      initWithoutDefaultIntegrations({ dsn: PUBLIC_DSN });
+
+      const client = getClient();
+
+      expect(client?.getOptions().integrations).toEqual([]);
+      expect(mockAutoPerformanceIntegrations).toHaveBeenCalledTimes(0);
+    });
+
+    it('still installs user-provided integrations', () => {
+      const customIntegration = new MockIntegration('Custom integration');
+
+      initWithoutDefaultIntegrations({ dsn: PUBLIC_DSN, integrations: [customIntegration] });
+
+      const client = getClient();
+
+      expect(client?.getOptions().integrations.map(({ name }) => name)).toEqual(['Custom integration']);
+      expect(customIntegration.setupOnce).toHaveBeenCalledTimes(1);
+    });
+  });
+
+  describe('getDefaultIntegrationsWithoutPerformance()', () => {
+    it('matches the full default set when tracing is disabled (no performance integrations added)', () => {
+      const withoutPerformance = getDefaultIntegrationsWithoutPerformance().map(({ name }) => name);
+      const full = getDefaultIntegrations({}).map(({ name }) => name);
+
+      expect(withoutPerformance).toEqual(full);
+      expect(mockAutoPerformanceIntegrations).toHaveBeenCalledTimes(0);
+    });
+
+    it('omits the performance integrations that the full set adds when tracing is enabled', () => {
+      const performanceIntegration = new MockIntegration('Performance integration');
+      mockAutoPerformanceIntegrations.mockImplementation(() => [performanceIntegration]);
+
+      const withoutPerformance = getDefaultIntegrationsWithoutPerformance().map(({ name }) => name);
+      const full = getDefaultIntegrations({ tracesSampleRate: 1 }).map(({ name }) => name);
+
+      expect(full).toContain('Performance integration');
+      expect(withoutPerformance).not.toContain('Performance integration');
+    });
+  });
 });