feat(hono): Add base for Sentry Hono middleware (Cloudflare)

dev-packages/cloudflare-integration-tests/expect.ts

@@ -19,13 +19,13 @@ function dropUndefinedKeys<T extends Record<string, unknown>>(obj: T): T {
   return obj;
 }
 
-function getSdk(): SdkInfo {
+function getSdk(sdk: 'cloudflare' | 'hono'): SdkInfo {
   return {
     integrations: expect.any(Array),
-    name: 'sentry.javascript.cloudflare',
+    name: `sentry.javascript.${sdk}`,
     packages: [
       {
-        name: 'npm:@sentry/cloudflare',
+        name: `npm:@sentry/${sdk}`,
         version: SDK_VERSION,
       },
     ],
@@ -46,24 +46,27 @@ function defaultContexts(eventContexts: Contexts = {}): Contexts {
   });
 }
 
-export function expectedEvent(event: Event): Event {
+export function expectedEvent(event: Event, { sdk }: { sdk: 'cloudflare' | 'hono' }): Event {
   return dropUndefinedKeys({
     event_id: UUID_MATCHER,
     timestamp: expect.any(Number),
     environment: 'production',
     platform: 'javascript',
-    sdk: getSdk(),
+    sdk: getSdk(sdk),
     ...event,
     contexts: defaultContexts(event.contexts),
   });
 }
 
-export function eventEnvelope(event: Event, includeSampleRand = false): Envelope {
+export function eventEnvelope(
+  event: Event,
+  { includeSampleRand = false, sdk = 'cloudflare' }: { includeSampleRand?: boolean; sdk?: 'cloudflare' | 'hono' } = {},
+): Envelope {
   return [
     {
       event_id: UUID_MATCHER,
       sent_at: ISO_DATE_MATCHER,
-      sdk: { name: 'sentry.javascript.cloudflare', version: SDK_VERSION },
+      sdk: { name: `sentry.javascript.${sdk}`, version: SDK_VERSION },
       trace: {
         environment: event.environment || 'production',
         public_key: 'public',
@@ -74,6 +77,6 @@ export function eventEnvelope(event: Event, includeSampleRand = false): Envelope
         transaction: expect.any(String),
       },
     },
-    [[{ type: 'event' }, expectedEvent(event)]],
+    [[{ type: 'event' }, expectedEvent(event, { sdk })]],
   ];
 }

dev-packages/cloudflare-integration-tests/package.json

@@ -15,6 +15,7 @@
   "dependencies": {
     "@langchain/langgraph": "^1.0.1",
     "@sentry/cloudflare": "10.38.0",
+    "@sentry/hono": "10.38.0",
     "hono": "^4.11.7"
   },
   "devDependencies": {

dev-packages/cloudflare-integration-tests/suites/hono/basic/index.ts → dev-packages/cloudflare-integration-tests/suites/hono-integration/index.ts

@@ -16,7 +16,7 @@ app.get('/json', c => {
 });
 
 app.get('/error', () => {
-  throw new Error('Test error from Hono app');
+  throw new Error('Test error from Hono app (Sentry Cloudflare SDK)');
 });
 
 app.get('/hello/:name', c => {

dev-packages/cloudflare-integration-tests/suites/hono/basic/test.ts → dev-packages/cloudflare-integration-tests/suites/hono-integration/test.ts

@@ -1,6 +1,6 @@
 import { expect, it } from 'vitest';
-import { eventEnvelope } from '../../../expect';
-import { createRunner } from '../../../runner';
+import { eventEnvelope } from '../../expect';
+import { createRunner } from '../../runner';
 
 it('Hono app captures errors', async ({ signal }) => {
   const runner = createRunner(__dirname)
@@ -14,7 +14,7 @@ it('Hono app captures errors', async ({ signal }) => {
             values: [
               {
                 type: 'Error',
-                value: 'Test error from Hono app',
+                value: 'Test error from Hono app (Sentry Cloudflare SDK)',
                 stacktrace: {
                   frames: expect.any(Array),
                 },
@@ -28,7 +28,7 @@ it('Hono app captures errors', async ({ signal }) => {
             url: expect.any(String),
           },
         },
-        true,
+        { includeSampleRand: true },
       ),
     )
     // Second envelope: transaction event

dev-packages/cloudflare-integration-tests/suites/hono-sdk/index.ts

@@ -0,0 +1,38 @@
+import { sentry } from '@sentry/hono/cloudflare';
+import { Hono } from 'hono';
+
+interface Env {
+  SENTRY_DSN: string;
+}
+
+const app = new Hono<{ Bindings: Env }>();
+
+app.use(
+  '*',
+  sentry(app, {
+    dsn: process.env.SENTRY_DSN,
+    tracesSampleRate: 1.0,
+    debug: true,
+    // fixme - check out what removing this integration changes
+    // integrations: integrations => integrations.filter(integration => integration.name !== 'Hono'),
+  }),
+);
+
+app.get('/', c => {
+  return c.text('Hello from Hono on Cloudflare!');
+});
+
+app.get('/json', c => {
+  return c.json({ message: 'Hello from Hono', framework: 'hono', platform: 'cloudflare' });
+});
+
+app.get('/error', () => {
+  throw new Error('Test error from Hono app');
+});
+
+app.get('/hello/:name', c => {
+  const name = c.req.param('name');
+  return c.text(`Hello, ${name}!`);
+});
+
+export default app;

dev-packages/cloudflare-integration-tests/suites/hono-sdk/test.ts

@@ -0,0 +1,99 @@
+import { expect, it } from 'vitest';
+import { eventEnvelope, SHORT_UUID_MATCHER, UUID_MATCHER } from '../../expect';
+import { createRunner } from '../../runner';
+
+it('Hono app captures errors (Hono SDK)', async ({ signal }) => {
+  const runner = createRunner(__dirname)
+    .expect(
+      eventEnvelope(
+        {
+          level: 'error',
+          transaction: 'GET /error',
+          exception: {
+            values: [
+              {
+                type: 'Error',
+                value: 'Test error from Hono app',
+                stacktrace: {
+                  frames: expect.any(Array),
+                },
+                mechanism: { type: 'auto.faas.hono.error_handler', handled: false },
+              },
+            ],
+          },
+          request: {
+            headers: expect.any(Object),
+            method: 'GET',
+            url: expect.any(String),
+          },
+        },
+        { includeSampleRand: true, sdk: 'hono' },
+      ),
+    )
+    .expect(envelope => {
+      const [, envelopeItems] = envelope;
+      const [itemHeader, itemPayload] = envelopeItems[0];
+
+      expect(itemHeader.type).toBe('transaction');
+
+      expect(itemPayload).toMatchObject({
+        type: 'transaction',
+        platform: 'javascript',
+        transaction: 'GET /error',
+        contexts: {
+          trace: {
+            span_id: expect.any(String),
+            trace_id: expect.any(String),
+            op: 'http.server',
+            status: 'internal_error',
+            origin: 'auto.http.cloudflare',
+          },
+        },
+        request: expect.objectContaining({
+          method: 'GET',
+          url: expect.stringContaining('/error'),
+        }),
+      });
+    })
+
+    .unordered()
+    .start(signal);
+
+  await runner.makeRequest('get', '/error', { expectError: true });
+  await runner.completed();
+});
+
+it('Hono app captures parametrized names', async ({ signal }) => {
+  const runner = createRunner(__dirname)
+    .expect(envelope => {
+      const [, envelopeItems] = envelope;
+      const [itemHeader, itemPayload] = envelopeItems[0];
+
+      expect(itemHeader.type).toBe('transaction');
+
+      expect(itemPayload).toMatchObject({
+        type: 'transaction',
+        platform: 'javascript',
+        transaction: 'GET /hello/:name',
+        contexts: {
+          trace: {
+            span_id: SHORT_UUID_MATCHER,
+            trace_id: UUID_MATCHER,
+            op: 'http.server',
+            status: 'ok',
+            origin: 'auto.http.cloudflare',
+          },
+        },
+        request: expect.objectContaining({
+          method: 'GET',
+          url: expect.stringContaining('/hello/:name'),
+        }),
+      });
+    })
+
+    .unordered()
+    .start(signal);
+
+  await runner.makeRequest('get', '/hello/:name', { expectError: false });
+  await runner.completed();
+});

dev-packages/cloudflare-integration-tests/suites/hono-sdk/wrangler.jsonc

@@ -0,0 +1,7 @@
+{
+  "name": "hono-sdk-worker",
+  "compatibility_date": "2025-06-17",
+  "main": "index.ts",
+  "compatibility_flags": ["nodejs_compat"]
+}
+

dev-packages/e2e-tests/verdaccio-config/config.yaml

@@ -86,6 +86,12 @@ packages:
     unpublish: $all
     # proxy: npmjs # Don't proxy for E2E tests!
 
+  '@sentry/hono':
+    access: $all
+    publish: $all
+    unpublish: $all
+    # proxy: npmjs # Don't proxy for E2E tests!
+
   '@sentry/nestjs':
     access: $all
     publish: $all

package.json

@@ -64,6 +64,7 @@
     "packages/feedback",
     "packages/gatsby",
     "packages/google-cloud-serverless",
+    "packages/hono",
     "packages/integration-shims",
     "packages/nestjs",
     "packages/nextjs",

packages/hono/.eslintrc.js

@@ -0,0 +1,9 @@
+module.exports = {
+  env: {
+    node: true,
+  },
+  extends: ['../../.eslintrc.js'],
+  rules: {
+    '@sentry-internal/sdk/no-class-field-initializers': 'off',
+  },
+};

packages/hono/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Functional Software, Inc. dba Sentry
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/hono/README.md

@@ -0,0 +1,58 @@
+<p align="center">
+  <a href="https://sentry.io/?utm_source=github&utm_medium=logo" target="_blank">
+    <img src="https://sentry-brand.storage.googleapis.com/sentry-wordmark-dark-280x84.png" alt="Sentry" width="280" height="84">
+  </a>
+</p>
+
+# Official Sentry SDK for Hono (ALPHA)
+
+[![npm version](https://img.shields.io/npm/v/@sentry/hono.svg)](https://www.npmjs.com/package/@sentry/hono)
+[![npm dm](https://img.shields.io/npm/dm/@sentry/hono.svg)](https://www.npmjs.com/package/@sentry/hono)
+[![npm dt](https://img.shields.io/npm/dt/@sentry/hono.svg)](https://www.npmjs.com/package/@sentry/hono)
+
+## Links
+
+- [Official SDK Docs](https://docs.sentry.io/quickstart/)
+
+## Install
+
+To get started, first install the `@sentry/hono` package:
+
+```bash
+npm install @sentry/hono
+```
+
+## Setup (Cloudflare Workers)
+
+### Enable Node.js compatibility
+
+Either set the `nodejs_compat` compatibility flags in your `wrangler.jsonc`/`wrangler.toml` config. This is because the SDK needs access to the `AsyncLocalStorage` API to work correctly.
+
+```jsonc {tabTitle:JSON} {filename:wrangler.jsonc}
+{
+  "compatibility_flags": ["nodejs_compat"],
+}
+```
+
+```toml {tabTitle:Toml} {filename:wrangler.toml}
+compatibility_flags = ["nodejs_compat"]
+```
+
+### Initialize Sentry in your Hono app
+
+Initialize the Sentry Hono middleware as early as possible in your app:
+
+```typescript
+import { sentry } from '@sentry/hono/cloudflare';
+
+const app = new Hono();
+
+app.use(
+  '*',
+  sentry(app, {
+    dsn: 'your-sentry-dsn',
+  }),
+);
+
+export default app;
+```