refactor(ssg): create request from saved requestInit in order to avoid memory leak warnings

deno_dist/helper/ssg/index.ts

@@ -148,9 +148,13 @@ export const fetchRoutesContent = async <
       forGetInfoURLRequest.ssgParams = [{}]
     }
 
+    const requestInit = {
+      method: forGetInfoURLRequest.method,
+      headers: forGetInfoURLRequest.headers,
+    }
     for (const param of forGetInfoURLRequest.ssgParams) {
       const replacedUrlParam = replaceUrlParam(route.path, param)
-      let response = await app.request(replacedUrlParam, forGetInfoURLRequest)
+      let response = await app.request(replacedUrlParam, requestInit)
       if (response.headers.get(X_HONO_DISABLE_SSG_HEADER_KEY)) {
         continue
       }

src/helper/ssg/index.test.tsx

@@ -215,6 +215,27 @@ describe('toSSG function', () => {
     expect(afterGenerateHookMock).toHaveBeenCalled()
     expect(afterGenerateHookMock).toHaveBeenCalledWith(expect.anything())
   })
+
+  it('should avoid memory leak from `req.signal.addEventListener()`', async () => {
+    const fsMock: FileSystemModule = {
+      writeFile: vi.fn(() => Promise.resolve()),
+      mkdir: vi.fn(() => Promise.resolve()),
+    }
+
+    const signalAddEventListener = vi.fn(() => {})
+    const app = new Hono()
+    app.get('/post/:post', ssgParams([{ post: '1' }, { post: '2' }]), (c) =>
+      c.html(<h1>{c.req.param('post')}</h1>)
+    )
+    await toSSG(app, fsMock, {
+      beforeRequestHook: (req) => {
+        req.signal.addEventListener = signalAddEventListener
+        return req
+      },
+    })
+
+    expect(signalAddEventListener).not.toHaveBeenCalled()
+  })
 })
 
 describe('fetchRoutesContent function', () => {

src/helper/ssg/index.ts

@@ -148,9 +148,13 @@ export const fetchRoutesContent = async <
       forGetInfoURLRequest.ssgParams = [{}]
     }
 
+    const requestInit = {
+      method: forGetInfoURLRequest.method,
+      headers: forGetInfoURLRequest.headers,
+    }
     for (const param of forGetInfoURLRequest.ssgParams) {
       const replacedUrlParam = replaceUrlParam(route.path, param)
-      let response = await app.request(replacedUrlParam, forGetInfoURLRequest)
+      let response = await app.request(replacedUrlParam, requestInit)
       if (response.headers.get(X_HONO_DISABLE_SSG_HEADER_KEY)) {
         continue
       }