Prevent headers sent error

2022-07-18 15:41:47 +02:00 · 2022-07-18 15:41:47 +02:00 · cace0d1a71
parent ace01da348
commit cace0d1a71
1 changed files with 7 additions and 2 deletions
--- a/server/middlewares/dnt.ts
+++ b/server/middlewares/dnt.ts
@ -1,5 +1,10 @@
-const advertiseDoNotTrack = (_, res, next) => {
-  res.setHeader('Tk', 'N')
+import * as express from 'express'
+
+const advertiseDoNotTrack = (_, res: express.Response, next: express.NextFunction) => {
+  if (!res.headersSent) {
+    res.setHeader('Tk', 'N')
+  }
+
  return next()
 }