src: change env.h includes for forward declarations

Due to how the Environment class is used through the codebase,
there are a lot of includes referencing either env.h or env-inl.h.
This can cause that when any development touches those libraries,
a lot of files have to be recompiled.
This commit attempts to change those includes by forward declarations
when possible to mitigate the issue.

Refs: #27531

PR-URL: #30133
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

src/connection_wrap.h

@@ -3,12 +3,13 @@
 
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
-#include "env.h"
 #include "stream_wrap.h"
 #include "v8.h"
 
 namespace node {
 
+class Environment;
+
 template <typename WrapType, typename UVType>
 class ConnectionWrap : public LibuvStreamWrap {
  public:

src/diagnosticfilename-inl.h

@@ -4,10 +4,10 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "node_internals.h"
-#include "env-inl.h"
-
 namespace node {
 
+class Environment;
+
 inline DiagnosticFilename::DiagnosticFilename(
     Environment* env,
     const char* prefix,

src/inspector/main_thread_interface.h

@@ -5,7 +5,6 @@
 #error("This header can only be used when inspector is enabled")
 #endif
 
-#include "env.h"
 #include "inspector_agent.h"
 #include "node_mutex.h"
 

src/inspector_profiler.h

@@ -7,7 +7,6 @@
 #error("This header can only be used when inspector is enabled")
 #endif
 
-#include "env.h"
 #include "inspector_agent.h"
 
 namespace node {

src/js_stream.h

@@ -4,12 +4,13 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "async_wrap.h"
-#include "env.h"
 #include "stream_base.h"
 #include "v8.h"
 
 namespace node {
 
+class Environment;
+
 class JSStream : public AsyncWrap, public StreamBase {
  public:
   static void Initialize(v8::Local<v8::Object> target,

src/node_crypto_bio.h

@@ -26,11 +26,13 @@
 
 #include "node_crypto.h"
 #include "openssl/bio.h"
-#include "env.h"
 #include "util.h"
 #include "v8.h"
 
 namespace node {
+
+class Environment;
+
 namespace crypto {
 
 // This class represents buffers for OpenSSL I/O, implemented as a singly-linked

src/node_dtrace.h

@@ -24,7 +24,6 @@
 
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
-#include "env.h"
 #include "v8.h"
 
 extern "C" {
@@ -76,6 +75,8 @@ typedef struct {
 
 namespace node {
 
+class Environment;
+
 void InitDTrace(Environment* env);
 
 }  // namespace node

src/node_perf.h

@@ -5,7 +5,6 @@
 
 #include "node.h"
 #include "node_perf_common.h"
-#include "env.h"
 #include "base_object-inl.h"
 #include "histogram-inl.h"
 
@@ -15,6 +14,9 @@
 #include <string>
 
 namespace node {
+
+class Environment;
+
 namespace performance {
 
 using v8::FunctionCallbackInfo;

src/node_stat_watcher.h

@@ -26,12 +26,13 @@
 
 #include "node.h"
 #include "handle_wrap.h"
-#include "env.h"
 #include "uv.h"
 #include "v8.h"
 
 namespace node {
 
+class Environment;
+
 class StatWatcher : public HandleWrap {
  public:
   static void Initialize(Environment* env, v8::Local<v8::Object> target);

src/node_url.h

@@ -4,7 +4,6 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "node.h"
-#include "env.h"
 
 #include <string>
 

src/pipe_wrap.h

@@ -26,10 +26,11 @@
 
 #include "async_wrap.h"
 #include "connection_wrap.h"
-#include "env.h"
 
 namespace node {
 
+class Environment;
+
 class PipeWrap : public ConnectionWrap<PipeWrap, uv_pipe_t> {
  public:
   enum SocketType {

src/req_wrap.h

@@ -4,12 +4,13 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "async_wrap.h"
-#include "env.h"
 #include "util.h"
 #include "v8.h"
 
 namespace node {
 
+class Environment;
+
 class ReqWrapBase {
  public:
   explicit inline ReqWrapBase(Environment* env);

src/stream_base.h

@@ -3,7 +3,6 @@
 
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
-#include "env.h"
 #include "async_wrap-inl.h"
 #include "node.h"
 #include "util.h"
@@ -13,6 +12,7 @@
 namespace node {
 
 // Forward declarations
+class Environment;
 class ShutdownWrap;
 class WriteWrap;
 class StreamBase;

src/stream_wrap.h

@@ -25,14 +25,14 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "stream_base.h"
-
-#include "env.h"
 #include "handle_wrap.h"
 #include "string_bytes.h"
 #include "v8.h"
 
 namespace node {
 
+class Environment;
+
 class LibuvStreamWrap : public HandleWrap, public StreamBase {
  public:
   static void Initialize(v8::Local<v8::Object> target,

src/tcp_wrap.h

@@ -25,11 +25,12 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "async_wrap.h"
-#include "env.h"
 #include "connection_wrap.h"
 
 namespace node {
 
+class Environment;
+
 class TCPWrap : public ConnectionWrap<TCPWrap, uv_tcp_t> {
  public:
   enum SocketType {

src/tls_wrap.h

@@ -27,7 +27,6 @@
 #include "node_crypto.h"  // SSLWrap
 
 #include "async_wrap.h"
-#include "env.h"
 #include "stream_wrap.h"
 #include "v8.h"
 
@@ -38,6 +37,7 @@
 namespace node {
 
 // Forward-declarations
+class Environment;
 class WriteWrap;
 namespace crypto {
 class SecureContext;

src/tty_wrap.h

@@ -24,12 +24,13 @@
 
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
-#include "env.h"
 #include "uv.h"
 #include "stream_wrap.h"
 
 namespace node {
 
+class Environment;
+
 class TTYWrap : public LibuvStreamWrap {
  public:
   static void Initialize(v8::Local<v8::Object> target,

src/udp_wrap.h

@@ -25,13 +25,14 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "async_wrap.h"
-#include "env.h"
 #include "handle_wrap.h"
 #include "uv.h"
 #include "v8.h"
 
 namespace node {
 
+class Environment;
+
 class UDPWrap: public HandleWrap {
  public:
   enum SocketType {