Repo sync

package.json

@@ -375,8 +375,8 @@
     "sass": "^1.52.3",
     "start-server-and-test": "^2.0.3",
     "ts-jest": "29.1.1",
-    "tsx": "4.7.0",
-    "typescript": "^5.2.2",
+    "tsx": "4.7.1",
+    "typescript": "^5.3.3",
     "unist-util-remove": "^4.0.0",
     "unist-util-visit-parents": "6.0.1",
     "website-scraper": "^5.3.1"

src/shielding/middleware/handle-invalid-headers.js

@@ -1,8 +1,3 @@
-import statsd from '#src/observability/lib/statsd.js'
-import { errorCacheControl } from '#src/frame/middleware/cache-control.js'
-
-const STATSD_KEY = 'middleware.handle_invalid_headers'
-
 const INVALID_HEADER_KEYS = [
   // Next.js will pick this up and override the status code.
   // We don't want that to happen because `x-invoke-status: 203` can
@@ -15,14 +10,9 @@ const INVALID_HEADER_KEYS = [
 export default function handleInvalidNextPaths(req, res, next) {
   const header = INVALID_HEADER_KEYS.find((key) => req.headers[key])
   if (header) {
-    // This way you can't hammer the backend with invalid requests.
-    // Since the CDN will cache based on the status code not being one
-    // of success, we don't have to worry about this being cached when
-    // the URL is the same but the headers *not invalid*.
-    errorCacheControl(res)
-
-    const tags = [`ip:${req.ip}`, `path:${req.path}`, `header:${header}`]
-    statsd.increment(STATSD_KEY, 1, tags)
+    // There's no point attempting to set a cache-control on this.
+    // The CDN will not cache if the status code is not a success
+    // and not a 404.
 
     return res.status(400).type('text').send('Invalid request headers')
   }

src/shielding/tests/invalid-headers.js

@@ -4,13 +4,9 @@ describe('invalid headers', () => {
   test('400 if containing x-invoke-status (instead of redirecting)', async () => {
     const res = await get('/', { headers: { 'x-invoke-status': '203' } })
     expect(res.statusCode).toBe(400)
-    expect(res.headers['cache-control']).toMatch('public')
-    expect(res.headers['cache-control']).toMatch(/max-age=[1-9]/)
   })
   test('400 if containing x-invoke-status (instead of 200)', async () => {
     const res = await get('/en', { headers: { 'x-invoke-status': '203' } })
     expect(res.statusCode).toBe(400)
-    expect(res.headers['cache-control']).toMatch('public')
-    expect(res.headers['cache-control']).toMatch(/max-age=[1-9]/)
   })
 })