Next

jsr.json

@@ -26,6 +26,7 @@
     "./cookie": "./src/helper/cookie/index.ts",
     "./accepts": "./src/helper/accepts/index.ts",
     "./compress": "./src/middleware/compress/index.ts",
+    "./context-storage": "./src/middleware/context-storage/index.ts",
     "./cors": "./src/middleware/cors/index.ts",
     "./csrf": "./src/middleware/csrf/index.ts",
     "./etag": "./src/middleware/etag/index.ts",

package.json

@@ -104,6 +104,11 @@
       "import": "./dist/middleware/compress/index.js",
       "require": "./dist/cjs/middleware/compress/index.js"
     },
+    "./context-storage": {
+      "types": "./dist/types/middleware/context-storage/index.d.ts",
+      "import": "./dist/middleware/context-storage/index.js",
+      "require": "./dist/cjs/middleware/context-storage/index.js"
+    },
     "./cors": {
       "types": "./dist/types/middleware/cors/index.d.ts",
       "import": "./dist/middleware/cors/index.js",
@@ -421,6 +426,9 @@
       "compress": [
         "./dist/types/middleware/compress"
       ],
+      "context-storage": [
+        "./dist/types/middleware/context-storage"
+      ],
       "cors": [
         "./dist/types/middleware/cors"
       ],

runtime_tests/node/index.test.ts

@@ -1,12 +1,14 @@
-import { createAdaptorServer } from '@hono/node-server'
+import type { Server } from 'node:http'
+import { createAdaptorServer, serve } from '@hono/node-server'
 import request from 'supertest'
 import { Hono } from '../../src'
 import { Context } from '../../src/context'
 import { env, getRuntimeKey } from '../../src/helper/adapter'
 import { basicAuth } from '../../src/middleware/basic-auth'
 import { jwt } from '../../src/middleware/jwt'
-import { HonoRequest } from '../../src/request'
+import { compress } from '../../src/middleware/compress'
 import { stream, streamSSE } from '../../src/helper/streaming'
+import type { AddressInfo } from 'node:net'
 
 // Test only minimal patterns.
 // See <https://github.com/honojs/node-server> for more tests and information.
@@ -38,7 +40,7 @@ describe('Basic', () => {
 
 describe('Environment Variables', () => {
   it('Should return the environment variable', async () => {
-    const c = new Context(new HonoRequest(new Request('http://localhost/')))
+    const c = new Context(new Request('http://localhost/'))
     const { NAME } = env<{ NAME: string }>(c)
     expect(NAME).toBe('Node')
   })
@@ -203,3 +205,44 @@ describe('streamSSE', () => {
     expect(aborted).toBe(false)
   })
 })
+
+describe('compress', async () => {
+  const cssContent = Array.from({ length: 60 }, () => 'body { color: red; }').join('\n')
+  const [externalServer, serverInfo] = await new Promise<[Server, AddressInfo]>((resolve) => {
+    const externalApp = new Hono()
+    externalApp.get('/style.css', (c) =>
+      c.text(cssContent, {
+        headers: {
+          'Content-Type': 'text/css',
+        },
+      })
+    )
+    const server = serve(
+      {
+        fetch: externalApp.fetch,
+        port: 0,
+      },
+      (serverInfo) => {
+        resolve([server as Server, serverInfo])
+      }
+    )
+  })
+
+  const app = new Hono()
+  app.use(compress())
+  app.get('/fetch/:file', (c) => {
+    return fetch(`http://${serverInfo.address}:${serverInfo.port}/${c.req.param('file')}`)
+  })
+  const server = createAdaptorServer(app)
+
+  afterAll(() => {
+    externalServer.close()
+  })
+
+  it('Should be compressed a fetch response', async () => {
+    const res = await request(server).get('/fetch/style.css')
+    expect(res.status).toBe(200)
+    expect(res.headers['content-encoding']).toBe('gzip')
+    expect(res.text).toBe(cssContent)
+  })
+})

src/adapter/bun/websocket.ts

@@ -19,11 +19,9 @@ interface BunWebSocketHandler<T> {
   close(ws: BunServerWebSocket<T>, code?: number, reason?: string): void
   message(ws: BunServerWebSocket<T>, message: string | Uint8Array): void
 }
-interface CreateWebSocket {
-  (): {
-    upgradeWebSocket: UpgradeWebSocket
-    websocket: BunWebSocketHandler<BunWebSocketData>
-  }
+interface CreateWebSocket<T> {
+  upgradeWebSocket: UpgradeWebSocket<T>
+  websocket: BunWebSocketHandler<BunWebSocketData>
 }
 export interface BunWebSocketData {
   connId: number
@@ -49,10 +47,11 @@ const createWSContext = (ws: BunServerWebSocket<BunWebSocketData>): WSContext =>
   }
 }
 
-export const createBunWebSocket: CreateWebSocket = () => {
+export const createBunWebSocket = <T>(): CreateWebSocket<T> => {
   const websocketConns: WSEvents[] = []
 
-  const upgradeWebSocket: UpgradeWebSocket = (createEvents) => {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const upgradeWebSocket: UpgradeWebSocket<any> = (createEvents) => {
     return async (c, next) => {
       const server = getBunServer(c)
       if (!server) {

src/adapter/cloudflare-pages/handler.test.ts

@@ -230,6 +230,18 @@ describe('Middleware adapter for Cloudflare Pages', () => {
     await expect(handler(eventContext)).rejects.toThrowError('Something went wrong')
     expect(next).not.toHaveBeenCalled()
   })
+
+  it('Should set the data in eventContext.data', async () => {
+    const next = vi.fn()
+    const eventContext = createEventContext({ next })
+    const handler = handleMiddleware(async (c, next) => {
+      c.env.eventContext.data.user = 'Joe'
+      await next()
+    })
+    expect(eventContext.data.user).toBeUndefined()
+    await handler(eventContext)
+    expect(eventContext.data.user).toBe('Joe')
+  })
 })
 
 describe('serveStatic()', () => {

src/adapter/cloudflare-pages/handler.ts

@@ -9,7 +9,7 @@ import type { BlankSchema, Env, Input, MiddlewareHandler, Schema } from '../../t
 type Params<P extends string = any> = Record<P, string | string[]>
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-export type EventContext<Env = {}, P extends string = any, Data = {}> = {
+export type EventContext<Env = {}, P extends string = any, Data = Record<string, unknown>> = {
   request: Request
   functionPath: string
   waitUntil: (promise: Promise<unknown>) => void
@@ -43,12 +43,20 @@ export const handle =
   }
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-export function handleMiddleware<E extends Env = any, P extends string = any, I extends Input = {}>(
-  middleware: MiddlewareHandler<E, P, I>
+export function handleMiddleware<E extends Env = {}, P extends string = any, I extends Input = {}>(
+  middleware: MiddlewareHandler<
+    E & {
+      Bindings: {
+        eventContext: EventContext
+      }
+    },
+    P,
+    I
+  >
 ): PagesFunction<E['Bindings']> {
   return async (executionCtx) => {
     const context = new Context(executionCtx.request, {
-      env: executionCtx.env,
+      env: { ...executionCtx.env, eventContext: executionCtx },
       executionCtx,
     })
 

src/adapter/cloudflare-workers/websocket.ts

@@ -1,7 +1,7 @@
 import type { UpgradeWebSocket, WSContext, WSReadyState } from '../../helper/websocket'
 
 // Based on https://github.com/honojs/hono/issues/1153#issuecomment-1767321332
-export const upgradeWebSocket: UpgradeWebSocket = (createEvents) => async (c, next) => {
+export const upgradeWebSocket: UpgradeWebSocket<WebSocket> = (createEvents) => async (c, next) => {
   const events = await createEvents(c)
 
   const upgradeHeader = c.req.header('Upgrade')
@@ -14,7 +14,7 @@ export const upgradeWebSocket: UpgradeWebSocket = (createEvents) => async (c, ne
   const client: WebSocket = webSocketPair[0]
   const server: WebSocket = webSocketPair[1]
 
-  const wsContext: WSContext = {
+  const wsContext: WSContext<WebSocket> = {
     binaryType: 'arraybuffer',
     close: (code, reason) => server.close(code, reason),
     get protocol() {

src/adapter/deno/websocket.ts

@@ -20,7 +20,7 @@ export interface UpgradeWebSocketOptions {
   idleTimeout?: number
 }
 
-export const upgradeWebSocket: UpgradeWebSocket<UpgradeWebSocketOptions> =
+export const upgradeWebSocket: UpgradeWebSocket<WebSocket, UpgradeWebSocketOptions> =
   (createEvents, options) => async (c, next) => {
     if (c.req.header('upgrade') !== 'websocket') {
       return await next()
@@ -29,7 +29,7 @@ export const upgradeWebSocket: UpgradeWebSocket<UpgradeWebSocketOptions> =
     const events = await createEvents(c)
     const { response, socket } = Deno.upgradeWebSocket(c.req.raw, options || {})
 
-    const wsContext: WSContext = {
+    const wsContext: WSContext<WebSocket> = {
       binaryType: 'arraybuffer',
       close: (code, reason) => socket.close(code, reason),
       get protocol() {

src/context.test.ts

@@ -1,6 +1,29 @@
 import { Context } from './context'
 import { setCookie } from './helper/cookie'
 
+const makeResponseHeaderImmutable = (res: Response) => {
+  Object.defineProperty(res, 'headers', {
+    value: new Proxy(res.headers, {
+      set(target, prop, value) {
+        if (prop === 'set') {
+          throw new TypeError('Cannot modify headers: Headers are immutable')
+        }
+        return Reflect.set(target, prop, value)
+      },
+      get(target, prop) {
+        if (prop === 'set') {
+          return function () {
+            throw new TypeError('Cannot modify headers: Headers are immutable')
+          }
+        }
+        return Reflect.get(target, prop)
+      },
+    }),
+    writable: false,
+  })
+  return res
+}
+
 describe('Context', () => {
   const req = new Request('http://localhost/')
 
@@ -360,6 +383,28 @@ describe('Context header', () => {
     const res = c.text('Hi')
     expect(res.headers.get('set-cookie')).toBe('a, b, c')
   })
+
+  it('Should be able to overwrite a fetch response with a new response.', async () => {
+    c.res = makeResponseHeaderImmutable(new Response('bar'))
+    c.res = new Response('foo', {
+      headers: {
+        'X-Custom': 'Message',
+      },
+    })
+    expect(c.res.text()).resolves.toBe('foo')
+    expect(c.res.headers.get('X-Custom')).toBe('Message')
+  })
+
+  it('Should be able to overwrite a response with a fetch response.', async () => {
+    c.res = new Response('foo', {
+      headers: {
+        'X-Custom': 'Message',
+      },
+    })
+    c.res = makeResponseHeaderImmutable(new Response('bar'))
+    expect(c.res.text()).resolves.toBe('bar')
+    expect(c.res.headers.get('X-Custom')).toBe('Message')
+  })
 })
 
 describe('Pass a ResponseInit to respond methods', () => {

src/context.ts

@@ -465,16 +465,31 @@ export class Context<
   set res(_res: Response | undefined) {
     this.#isFresh = false
     if (this.#res && _res) {
-      this.#res.headers.delete('content-type')
-      for (const [k, v] of this.#res.headers.entries()) {
-        if (k === 'set-cookie') {
-          const cookies = this.#res.headers.getSetCookie()
-          _res.headers.delete('set-cookie')
-          for (const cookie of cookies) {
-            _res.headers.append('set-cookie', cookie)
+      try {
+        for (const [k, v] of this.#res.headers.entries()) {
+          if (k === 'content-type') {
+            continue
           }
+          if (k === 'set-cookie') {
+            const cookies = this.#res.headers.getSetCookie()
+            _res.headers.delete('set-cookie')
+            for (const cookie of cookies) {
+              _res.headers.append('set-cookie', cookie)
+            }
+          } else {
+            _res.headers.set(k, v)
+          }
+        }
+      } catch (e) {
+        if (e instanceof TypeError && e.message.includes('immutable')) {
+          // `_res` is immutable (probably a response from a fetch API), so retry with a new response.
+          this.res = new Response(_res.body, {
+            headers: _res.headers,
+            status: _res.status,
+          })
+          return
         } else {
-          _res.headers.set(k, v)
+          throw e
         }
       }
     }
@@ -844,18 +859,11 @@ export class Context<
     this.#preparedHeaders['content-type'] = 'text/html; charset=UTF-8'
 
     if (typeof html === 'object') {
-      if (!(html instanceof Promise)) {
-        html = (html as string).toString() // HtmlEscapedString object to string
-      }
-      if ((html as string | Promise<string>) instanceof Promise) {
-        return (html as unknown as Promise<string>)
-          .then((html) => resolveCallback(html, HtmlEscapedCallbackPhase.Stringify, false, {}))
-          .then((html) => {
-            return typeof arg === 'number'
-              ? this.newResponse(html, arg, headers)
-              : this.newResponse(html, arg)
-          })
-      }
+      return resolveCallback(html, HtmlEscapedCallbackPhase.Stringify, false, {}).then((html) => {
+        return typeof arg === 'number'
+          ? this.newResponse(html, arg, headers)
+          : this.newResponse(html, arg)
+      })
     }
 
     return typeof arg === 'number'