fix: remove deprecated res._headers

Author: commenthol

src/ecs/serializers.js

@@ -90,7 +90,7 @@ const ecsRes = (res, ecsObj) => {
     'content-type': mimeType,
     cookie,
     ...headers
-  } = res._headers || {}
+  } = res.getHeaders() || {}
 
   ecsObj.http = ecsObj.http || {}
   ecsObj.http.response = {

src/serializers/res.js

@@ -17,7 +17,7 @@ export function resSerializer (res) {
     [SET_COOKIE]: _1,
     [PROXY_AUTHENTICATE]: _2,
     ...headers
-  } = res.getHeaders ? res.getHeaders() : res._headers || {}
+  } = res.getHeaders() || {}
 
   const logRes = {
     statusCode: res.statusCode

test/LogEcs.test.js

@@ -364,13 +364,13 @@ describe('LogEcs', function () {
 
       const res = {
         statusCode: 500,
-        _headers: {
-          'x-powered-by': 'server'
-        },
         on: (ev, fn) => {
           onFn = fn
         },
-        removeListener: () => {}
+        removeListener: () => {},
+        getHeaders: () => ({
+          'x-powered-by': 'server'
+        })
       }
 
       let onFn