nicohrubec · Oct 19, 2026 · Oct 20, 2026 · Oct 20, 2026
@@ -6,7 +6,7 @@ describe('Sentry Astro build-time options type', () => {
     const completeOptions: SentryOptions = {
       // --- BuildTimeOptionsBase options ---
       org: 'test-org',
-      project: 'test-project',
+      project: ['test-project', 'other-project'],
       authToken: 'test-auth-token',
       sentryUrl: 'https://sentry.io',
       headers: { Authorization: ' Bearer test-auth-token' },

diff --git a/packages/core/src/build-time-plugins/buildTimeOptionsBase.ts b/packages/core/src/build-time-plugins/buildTimeOptionsBase.ts
@@ -30,9 +30,11 @@ export interface BuildTimeOptionsBase {
   /**
    * The slug of the Sentry project associated with the app.
    *
+   * Multiple projects can be passed to upload the build's source maps to each of them.
+   *
    * This value can also be specified via the `SENTRY_PROJECT` environment variable.
    */
-  project?: string;
+  project?: string | string[];
 
   /**
    * The authentication token to use for all communication with Sentry.

@@ -6,7 +6,7 @@ describe('Sentry Nuxt build-time options type', () => {
     const completeOptions: SentryNuxtModuleOptions = {
       // --- BuildTimeOptionsBase options ---
       org: 'test-org',
-      project: 'test-project',
+      project: ['test-project', 'other-project'],
       authToken: 'test-auth-token',
       sentryUrl: 'https://sentry.io',
       headers: { Authorization: ' Bearer test-auth-token' },

@@ -58,7 +58,7 @@ export const sentryOnBuildEnd: BuildEndHook = async ({ reactRouterConfig, viteCo
     token: authToken,
     org,
     url: sentryUrl,
-    project,
+    project: Array.isArray(project) ? undefined : project,
     headers,
   };
 
@@ -68,7 +68,10 @@ export const sentryOnBuildEnd: BuildEndHook = async ({ reactRouterConfig, viteCo
   if (release?.name) {
     try {
       // The release API requires a project, and the one given to the SDK does not reach this call.
-      await sentry.release.create({ orgVersion: release.name, project });
+      await sentry.release.create({
+        orgVersion: release.name,
+        project: Array.isArray(project) ? project.join(',') : project,
+      });
     } catch (error) {
       // eslint-disable-next-line no-console
       console.error('[Sentry] Could not create release', error);
@@ -92,10 +95,16 @@ export const sentryOnBuildEnd: BuildEndHook = async ({ reactRouterConfig, viteCo
     if (!uploadDisabled) {
       // upload sourcemaps
       try {
-        await sentry.sourcemap.upload({
-          directory: reactRouterConfig.buildDirectory,
-          release: release?.name || 'undefined',
-        });
+        const uploadClients = Array.isArray(project)
+          ? project.map(project => createSentrySDK({ ...sentryOptions, project }))
+          : [sentry];
+
+        for (const client of uploadClients) {
+          await client.sourcemap.upload({
+            directory: reactRouterConfig.buildDirectory,
+            release: release?.name || 'undefined',
+          });
+        }
       } catch (error) {
         // eslint-disable-next-line no-console
         console.error('[Sentry] Could not upload sourcemaps', error);

@@ -1,17 +1,16 @@
 import { createSentrySDK } from 'sentry';
-import * as fs from 'fs';
+import { rm } from 'node:fs/promises';
 import { glob } from 'glob';
 import type { ResolvedConfig } from 'vite';
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import { sentryOnBuildEnd } from '../../../src/vite/buildEnd/handleOnBuildEnd';
 import type { SentryReactRouterBuildOptions } from '../../../src/vite/types';
 
 vi.mock('sentry');
-vi.mock('fs', () => ({
-  promises: {
-    rm: vi.fn().mockResolvedValue(undefined),
-  },
-}));
+vi.mock('node:fs/promises', () => {
+  const rm = vi.fn().mockResolvedValue(undefined);
+  return { rm, default: { rm } };
+});
 vi.mock('glob');
 
 type TestConfig = ResolvedConfig & {
@@ -59,12 +58,16 @@ describe('sentryOnBuildEnd', () => {
 
   beforeEach(() => {
     vi.clearAllMocks();
-    vi.mocked(createSentrySDK).mockReturnValue(mockSentrySdkInstance as unknown as ReturnType<typeof createSentrySDK>);
+    mockSentrySdkInstance.sourcemap.upload.mockReset();
+    vi.mocked(createSentrySDK)
+      .mockReset()
+      .mockReturnValue(mockSentrySdkInstance as unknown as ReturnType<typeof createSentrySDK>);
     vi.mocked(glob).mockResolvedValue(['/build/file1.map', '/build/file2.map']);
-    vi.mocked(fs.promises.rm).mockResolvedValue(undefined);
+    vi.mocked(rm).mockResolvedValue(undefined);
   });
 
   afterEach(() => {
+    vi.restoreAllMocks();
     vi.resetModules();
   });
 
@@ -140,75 +143,83 @@ describe('sentryOnBuildEnd', () => {
     });
   });
 
-  it('should not upload or inject source maps when disabled via top-level sourcemaps.disable', async () => {
+  it('creates a release for both projects and uploads to each with one debug ID injection', async () => {
+    const upload = vi.fn();
+    vi.mocked(createSentrySDK).mockImplementation(options => {
+      const clientUpload: ReturnType<typeof createSentrySDK>['sourcemap']['upload'] = params =>
+        upload(options?.project, params);
+      return {
+        ...mockSentrySdkInstance,
+        sourcemap: {
+          ...mockSentrySdkInstance.sourcemap,
+          upload: clientUpload,
+        },
+      } as unknown as ReturnType<typeof createSentrySDK>;
+    });
+    const sentryConfig: SentryReactRouterBuildOptions = {
+      ...defaultConfig.viteConfig.sentryConfig,
+      project: ['frontend', 'backend'],
+      release: { name: 'v1.0.0' },
+    };
     const config = {
       ...defaultConfig,
-      viteConfig: {
-        ...defaultConfig.viteConfig,
-        sentryConfig: {
-          ...defaultConfig.viteConfig.sentryConfig,
-          sourcemaps: { disable: true },
-        },
-      } as unknown as TestConfig,
+      viteConfig: { ...defaultConfig.viteConfig, sentryConfig },
     };
 
     // @ts-expect-error - mocking the React config
     await sentryOnBuildEnd(config);
 
-    expect(mockSentrySdkInstance.sourcemap.inject).not.toHaveBeenCalled();
-    expect(mockSentrySdkInstance.sourcemap.upload).not.toHaveBeenCalled();
+    expect(mockSentrySdkInstance.release.create).toHaveBeenCalledExactlyOnceWith({
+      orgVersion: 'v1.0.0',
+      project: 'frontend,backend',
+    });
+    expect(mockSentrySdkInstance.sourcemap.inject).toHaveBeenCalledExactlyOnceWith({ directory: '/build' });
+    expect(upload).toHaveBeenCalledTimes(2);
+    expect(upload).toHaveBeenCalledWith('frontend', { directory: '/build', release: 'v1.0.0' });
+    expect(upload).toHaveBeenCalledWith('backend', { directory: '/build', release: 'v1.0.0' });
   });
 
-  // `'disable-upload'` means "inject debug IDs, but let me upload the maps myself", so
-  // injection must still run and the maps must survive.
-  it('should inject debug IDs but skip upload and deletion when disable is "disable-upload"', async () => {
+  it('should not upload or inject source maps when disabled via top-level sourcemaps.disable', async () => {
     const config = {
       ...defaultConfig,
       viteConfig: {
         ...defaultConfig.viteConfig,
         sentryConfig: {
           ...defaultConfig.viteConfig.sentryConfig,
-          sourcemaps: { disable: 'disable-upload' },
+          sourcemaps: { disable: true },
         },
       } as unknown as TestConfig,
     };
 
     // @ts-expect-error - mocking the React config
     await sentryOnBuildEnd(config);
 
-    expect(mockSentrySdkInstance.sourcemap.inject).toHaveBeenCalledWith({ directory: '/build' });
+    expect(mockSentrySdkInstance.sourcemap.inject).not.toHaveBeenCalled();
     expect(mockSentrySdkInstance.sourcemap.upload).not.toHaveBeenCalled();
     expect(glob).not.toHaveBeenCalled();
+    expect(rm).not.toHaveBeenCalled();
   });
 
-  // Deleting maps that were never uploaded would leave the user with neither.
-  it('should not delete source maps when upload is disabled', async () => {
+  // `'disable-upload'` means "inject debug IDs, but let me upload the maps myself", so
+  // injection must still run and the maps must survive.
+  it('should inject debug IDs but skip upload and deletion when disable is "disable-upload"', async () => {
     const config = {
       ...defaultConfig,
       viteConfig: {
         ...defaultConfig.viteConfig,
         sentryConfig: {
           ...defaultConfig.viteConfig.sentryConfig,
-          sourcemaps: { disable: true },
+          sourcemaps: { disable: 'disable-upload' },
         },
       } as unknown as TestConfig,
     };
 
     // @ts-expect-error - mocking the React config
     await sentryOnBuildEnd(config);
 
+    expect(mockSentrySdkInstance.sourcemap.inject).toHaveBeenCalledWith({ directory: '/build' });
+    expect(mockSentrySdkInstance.sourcemap.upload).not.toHaveBeenCalled();
     expect(glob).not.toHaveBeenCalled();
-    expect(fs.promises.rm).not.toHaveBeenCalled();
-  });
-
-  it('should delete source maps after upload with default pattern', async () => {
-    // @ts-expect-error - mocking the React config
-    await sentryOnBuildEnd(defaultConfig);
-
-    expect(glob).toHaveBeenCalledWith(['/build/**/*.map'], {
-      absolute: true,
-      nodir: true,
-    });
   });
 
   it('should delete custom files after upload when specified', async () => {
@@ -258,13 +269,6 @@ describe('sentryOnBuildEnd', () => {
     consoleSpy.mockRestore();
   });
 
-  it('should inject debug IDs before uploading source maps', async () => {
-    // @ts-expect-error - mocking the React config
-    await sentryOnBuildEnd(defaultConfig);
-
-    expect(mockSentrySdkInstance.sourcemap.inject).toHaveBeenCalledWith({ directory: '/build' });
-  });
-
   it('should handle errors during debug ID injection gracefully', async () => {
     const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
     mockSentrySdkInstance.sourcemap.inject.mockRejectedValueOnce(new Error('Injection failed'));
@@ -278,15 +282,25 @@ describe('sentryOnBuildEnd', () => {
     consoleSpy.mockRestore();
   });
 
-  it('should handle errors during source map upload gracefully', async () => {
-    const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {});
-    mockSentrySdkInstance.sourcemap.upload.mockRejectedValueOnce(new Error('Upload failed'));
+  it('logs a failed project upload and still runs cleanup', async () => {
+    const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+    const uploadError = new Error('Backend upload failed');
+    mockSentrySdkInstance.sourcemap.upload.mockResolvedValueOnce(undefined).mockRejectedValueOnce(uploadError);
+    const sentryConfig: SentryReactRouterBuildOptions = {
+      ...defaultConfig.viteConfig.sentryConfig,
+      project: ['frontend', 'backend'],
+    };
+    const config = {
+      ...defaultConfig,
+      viteConfig: { ...defaultConfig.viteConfig, sentryConfig },
+    };
 
     // @ts-expect-error - mocking the React config
-    await sentryOnBuildEnd(defaultConfig);
+    await sentryOnBuildEnd(config);
 
-    expect(consoleSpy).toHaveBeenCalledWith('[Sentry] Could not upload sourcemaps', expect.any(Error));
-    consoleSpy.mockRestore();
+    expect(mockSentrySdkInstance.sourcemap.upload).toHaveBeenCalledTimes(2);
+    expect(consoleSpy).toHaveBeenCalledWith('[Sentry] Could not upload sourcemaps', uploadError);
+    expect(rm).toHaveBeenCalledTimes(2);
   });
 
   it('should log debug information when debug is enabled', async () => {

@@ -6,7 +6,7 @@ describe('Sentry React-Router build-time options type', () => {
     const completeOptions: SentryReactRouterBuildOptions = {
       // --- BuildTimeOptionsBase options ---
       org: 'test-org',
-      project: 'test-project',
+      project: ['test-project', 'other-project'],
       authToken: 'test-auth-token',
       sentryUrl: 'https://sentry.io',
       headers: { Authorization: ' Bearer test-auth-token' },