http: remove outgoingmessage _headers and _headersList

PR-URL: #57551
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Tim Perry <pimterry@gmail.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Stefan Stojanovic <stefan.stojanovic@janeasystems.com>

Author: anonrig

doc/api/deprecations.md

@@ -1545,6 +1545,9 @@ removed. Please use `sloppy` instead.
 
 <!-- YAML
 changes:
+ - version: REPLACEME
+ pr-url: https://github.com/nodejs/node/pull/57551
+ description: End-of-Life.
  - version: v12.0.0
  pr-url: https://github.com/nodejs/node/pull/24167
  description: Runtime deprecation.
@@ -1553,7 +1556,7 @@ changes:
  description: Documentation-only deprecation.
 -->
 
-Type: Runtime
+Type: End-of-Life
 
 The `node:http` module `OutgoingMessage.prototype._headers` and
 `OutgoingMessage.prototype._headerNames` properties are deprecated. Use one of

lib/_http_outgoing.js

@@ -38,7 +38,6 @@ const { getDefaultHighWaterMark } = require('internal/streams/state');
 constassert=require('internal/assert');
 constEE=require('events');
 constStream=require('stream');
-constinternalUtil=require('internal/util');
 const{ kOutHeaders, utcDate, kNeedDrain }=require('internal/http');
 const{ Buffer }=require('buffer');
 const{
@@ -211,27 +210,6 @@ ObjectDefineProperty(OutgoingMessage.prototype, 'writableCorked', {
 },
 });
 
-ObjectDefineProperty(OutgoingMessage.prototype,'_headers',{
-__proto__: null,
-get: internalUtil.deprecate(function(){
-returnthis.getHeaders();
-},'OutgoingMessage.prototype._headers is deprecated','DEP0066'),
-set: internalUtil.deprecate(function(val){
-if(val==null){
-this[kOutHeaders]=null;
-}elseif(typeofval==='object'){
-constheaders=this[kOutHeaders]={__proto__: null};
-constkeys=ObjectKeys(val);
-// Retain for(;;) loop for performance reasons
-// Refs: https://github.com/nodejs/node/pull/30958
-for(leti=0;i<keys.length;++i){
-constname=keys[i];
-headers[name.toLowerCase()]=[name,val[name]];
-}
-}
-},'OutgoingMessage.prototype._headers is deprecated','DEP0066'),
-});
-
 ObjectDefineProperty(OutgoingMessage.prototype,'connection',{
 __proto__: null,
 get: function(){
@@ -256,42 +234,6 @@ ObjectDefineProperty(OutgoingMessage.prototype, 'socket', {
 },
 });
 
-ObjectDefineProperty(OutgoingMessage.prototype,'_headerNames',{
-__proto__: null,
-get: internalUtil.deprecate(function(){
-constheaders=this[kOutHeaders];
-if(headers!==null){
-constout={__proto__: null};
-constkeys=ObjectKeys(headers);
-// Retain for(;;) loop for performance reasons
-// Refs: https://github.com/nodejs/node/pull/30958
-for(leti=0;i<keys.length;++i){
-constkey=keys[i];
-constval=headers[key][0];
-out[key]=val;
-}
-returnout;
-}
-returnnull;
-},'OutgoingMessage.prototype._headerNames is deprecated','DEP0066'),
-set: internalUtil.deprecate(function(val){
-if(typeofval==='object'&&val!==null){
-constheaders=this[kOutHeaders];
-if(!headers)
-return;
-constkeys=ObjectKeys(val);
-// Retain for(;;) loop for performance reasons
-// Refs: https://github.com/nodejs/node/pull/30958
-for(leti=0;i<keys.length;++i){
-constheader=headers[keys[i]];
-if(header)
-header[0]=val[keys[i]];
-}
-}
-},'OutgoingMessage.prototype._headerNames is deprecated','DEP0066'),
-});
-
-
 OutgoingMessage.prototype._renderHeaders=function_renderHeaders(){
 if(this._header){
 thrownewERR_HTTP_HEADERS_SENT('render');