src: add include guards to internal headers

For consistency with the newly added src/base64.h header, check that
NODE_WANT_INTERNALS is defined and set in internal headers.

PR-URL: https://github.com/nodejs/node/pull/6948
Refs: https://github.com/nodejs/node/pull/6910
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>

48 files changed, 187 insertions, 0 deletions

diff --git a/src/async-wrap-inl.h b/src/async-wrap-inl.h
index cf7024e7e3..372af07310 100644
--- a/src/async-wrap-inl.h
+++ b/src/async-wrap-inl.h
@@ -1,6 +1,8 @@
 #ifndef SRC_ASYNC_WRAP_INL_H_
 #define SRC_ASYNC_WRAP_INL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "async-wrap.h"
 #include "base-object.h"
 #include "base-object-inl.h"
@@ -120,4 +122,6 @@ inline v8::Local<v8::Value> AsyncWrap::MakeCallback(
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_ASYNC_WRAP_INL_H_
diff --git a/src/async-wrap.h b/src/async-wrap.h
index cb0c9e211a..e1ea383d9f 100644
--- a/src/async-wrap.h
+++ b/src/async-wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_ASYNC_WRAP_H_
 #define SRC_ASYNC_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "base-object.h"
 #include "v8.h"
 
@@ -86,5 +88,6 @@ void LoadAsyncWrapperInfo(Environment* env);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #endif  // SRC_ASYNC_WRAP_H_
diff --git a/src/base-object-inl.h b/src/base-object-inl.h
index 86add5e3b3..b4c3730f1a 100644
--- a/src/base-object-inl.h
+++ b/src/base-object-inl.h
@@ -1,6 +1,8 @@
 #ifndef SRC_BASE_OBJECT_INL_H_
 #define SRC_BASE_OBJECT_INL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "base-object.h"
 #include "env.h"
 #include "env-inl.h"
@@ -68,4 +70,6 @@ inline void BaseObject::ClearWeak() {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_BASE_OBJECT_INL_H_
diff --git a/src/base-object.h b/src/base-object.h
index 8cc5101782..afec3442ce 100644
--- a/src/base-object.h
+++ b/src/base-object.h
@@ -1,6 +1,8 @@
 #ifndef SRC_BASE_OBJECT_H_
 #define SRC_BASE_OBJECT_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "v8.h"
 
 namespace node {
@@ -48,4 +50,6 @@ class BaseObject {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_BASE_OBJECT_H_
diff --git a/src/debug-agent.h b/src/debug-agent.h
index 0c465b8e1b..6b151c4587 100644
--- a/src/debug-agent.h
+++ b/src/debug-agent.h
@@ -22,6 +22,8 @@
 #ifndef SRC_DEBUG_AGENT_H_
 #define SRC_DEBUG_AGENT_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "util.h"
 #include "util-inl.h"
 #include "uv.h"
@@ -132,4 +134,6 @@ class Agent {
 }  // namespace debugger
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_DEBUG_AGENT_H_
diff --git a/src/env-inl.h b/src/env-inl.h
index 2c6248ae60..34f9bf7d72 100644
--- a/src/env-inl.h
+++ b/src/env-inl.h
@@ -1,6 +1,8 @@
 #ifndef SRC_ENV_INL_H_
 #define SRC_ENV_INL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "env.h"
 #include "node.h"
 #include "util.h"
@@ -576,4 +578,6 @@ inline v8::Local<v8::Object> Environment::NewInternalFieldObject() {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_ENV_INL_H_
diff --git a/src/env.h b/src/env.h
index afbade5dd8..0c95abd56c 100644
--- a/src/env.h
+++ b/src/env.h
@@ -1,6 +1,8 @@
 #ifndef SRC_ENV_H_
 #define SRC_ENV_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "ares.h"
 #include "debug-agent.h"
 #include "handle_wrap.h"
@@ -647,4 +649,6 @@ class Environment {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_ENV_H_
diff --git a/src/handle_wrap.h b/src/handle_wrap.h
index 49b36f80f9..eaf0faef20 100644
--- a/src/handle_wrap.h
+++ b/src/handle_wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_HANDLE_WRAP_H_
 #define SRC_HANDLE_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "async-wrap.h"
 #include "util.h"
 #include "uv.h"
@@ -69,5 +71,6 @@ class HandleWrap : public AsyncWrap {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #endif  // SRC_HANDLE_WRAP_H_
diff --git a/src/js_stream.h b/src/js_stream.h
index 08d1604ac5..5a1244bc46 100644
--- a/src/js_stream.h
+++ b/src/js_stream.h
@@ -1,6 +1,8 @@
 #ifndef SRC_JS_STREAM_H_
 #define SRC_JS_STREAM_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "async-wrap.h"
 #include "env.h"
 #include "stream_base.h"
@@ -48,4 +50,6 @@ class JSStream : public AsyncWrap, public StreamBase {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_JS_STREAM_H_
diff --git a/src/node_constants.h b/src/node_constants.h
index 133e68c192..7ba6ec3bd1 100644
--- a/src/node_constants.h
+++ b/src/node_constants.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_CONSTANTS_H_
 #define SRC_NODE_CONSTANTS_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "v8.h"
 
@@ -37,4 +39,6 @@ extern const char* default_cipher_list;
 void DefineConstants(v8::Isolate* isolate, v8::Local<v8::Object> target);
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_CONSTANTS_H_
diff --git a/src/node_counters.h b/src/node_counters.h
index 8c93b34f1f..117db1079e 100644
--- a/src/node_counters.h
+++ b/src/node_counters.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_COUNTERS_H_
 #define SRC_NODE_COUNTERS_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 
 #ifdef HAVE_PERFCTR
@@ -31,4 +33,6 @@ void TermPerfCounters(v8::Local<v8::Object> target);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_COUNTERS_H_
diff --git a/src/node_crypto.h b/src/node_crypto.h
index 28cee7a492..360024be88 100644
--- a/src/node_crypto.h
+++ b/src/node_crypto.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_CRYPTO_H_
 #define SRC_NODE_CRYPTO_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "node_crypto_clienthello.h"  // ClientHelloParser
 #include "node_crypto_clienthello-inl.h"
@@ -742,4 +744,6 @@ void InitCrypto(v8::Local<v8::Object> target);
 }  // namespace crypto
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_CRYPTO_H_
diff --git a/src/node_crypto_bio.h b/src/node_crypto_bio.h
index eb247b7f51..7fe0f9b796 100644
--- a/src/node_crypto_bio.h
+++ b/src/node_crypto_bio.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_CRYPTO_BIO_H_
 #define SRC_NODE_CRYPTO_BIO_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "openssl/bio.h"
 #include "env.h"
 #include "env-inl.h"
@@ -134,4 +136,6 @@ class NodeBIO {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_CRYPTO_BIO_H_
diff --git a/src/node_crypto_clienthello-inl.h b/src/node_crypto_clienthello-inl.h
index 9ae9fd41b6..108383bf2d 100644
--- a/src/node_crypto_clienthello-inl.h
+++ b/src/node_crypto_clienthello-inl.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_CRYPTO_CLIENTHELLO_INL_H_
 #define SRC_NODE_CRYPTO_CLIENTHELLO_INL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "util.h"
 #include "util-inl.h"
 
@@ -53,4 +55,6 @@ inline bool ClientHelloParser::IsPaused() const {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_CRYPTO_CLIENTHELLO_INL_H_
diff --git a/src/node_crypto_clienthello.h b/src/node_crypto_clienthello.h
index ec814d8439..b0b63fb2e3 100644
--- a/src/node_crypto_clienthello.h
+++ b/src/node_crypto_clienthello.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_CRYPTO_CLIENTHELLO_H_
 #define SRC_NODE_CRYPTO_CLIENTHELLO_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 
 #include <stddef.h>  // size_t
@@ -112,4 +114,6 @@ class ClientHelloParser {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_CRYPTO_CLIENTHELLO_H_
diff --git a/src/node_crypto_groups.h b/src/node_crypto_groups.h
index ffbf671307..2817f4c926 100644
--- a/src/node_crypto_groups.h
+++ b/src/node_crypto_groups.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_CRYPTO_GROUPS_H_
 #define SRC_NODE_CRYPTO_GROUPS_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 /*
     These modular groups were literally taken from:
        * RFC 2412 (groups 1 and 2)
@@ -388,4 +390,6 @@ static const modp_group modp_groups[] = {
 #undef V
 };
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_CRYPTO_GROUPS_H_
diff --git a/src/node_dtrace.h b/src/node_dtrace.h
index 9243d02f5a..5d192a60f7 100644
--- a/src/node_dtrace.h
+++ b/src/node_dtrace.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_DTRACE_H_
 #define SRC_NODE_DTRACE_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "v8.h"
 #include "env.h"
@@ -58,4 +60,6 @@ void InitDTrace(Environment* env, v8::Local<v8::Object> target);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_DTRACE_H_
diff --git a/src/node_file.h b/src/node_file.h
index 8192ed9c2f..76dbe80348 100644
--- a/src/node_file.h
+++ b/src/node_file.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_FILE_H_
 #define SRC_NODE_FILE_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "v8.h"
 
@@ -10,4 +12,6 @@ void InitFs(v8::Local<v8::Object> target);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_FILE_H_
diff --git a/src/node_http_parser.h b/src/node_http_parser.h
index 9b49d4d99e..5fbe6f1305 100644
--- a/src/node_http_parser.h
+++ b/src/node_http_parser.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_HTTP_PARSER_H_
 #define SRC_NODE_HTTP_PARSER_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "v8.h"
 
 #include "http_parser.h"
@@ -11,4 +13,6 @@ void InitHttpParser(v8::Local<v8::Object> target);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_HTTP_PARSER_H_
diff --git a/src/node_i18n.h b/src/node_i18n.h
index 4e812ad0f3..31ad18fa47 100644
--- a/src/node_i18n.h
+++ b/src/node_i18n.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_I18N_H_
 #define SRC_NODE_I18N_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 
 #if defined(NODE_HAVE_I18N_SUPPORT)
@@ -18,4 +20,6 @@ bool InitializeICUDirectory(const char* icu_data_path);
 
 #endif  // NODE_HAVE_I18N_SUPPORT
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_I18N_H_
diff --git a/src/node_internals.h b/src/node_internals.h
index a46d3130bf..2875f5ac79 100644
--- a/src/node_internals.h
+++ b/src/node_internals.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_INTERNALS_H_
 #define SRC_NODE_INTERNALS_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "util.h"
 #include "util-inl.h"
@@ -313,4 +315,6 @@ v8::MaybeLocal<v8::Object> New(Environment* env, char* data, size_t length);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_INTERNALS_H_
diff --git a/src/node_javascript.h b/src/node_javascript.h
index 1de6611b31..738d819572 100644
--- a/src/node_javascript.h
+++ b/src/node_javascript.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_JAVASCRIPT_H_
 #define SRC_NODE_JAVASCRIPT_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "v8.h"
 #include "env.h"
 
@@ -11,4 +13,6 @@ v8::Local<v8::String> MainSource(Environment* env);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_JAVASCRIPT_H_
diff --git a/src/node_lttng.h b/src/node_lttng.h
index 4e4147438f..edd802eb6e 100644
--- a/src/node_lttng.h
+++ b/src/node_lttng.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_LTTNG_H_
 #define SRC_NODE_LTTNG_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "v8.h"
 #include "env.h"
@@ -37,4 +39,6 @@ void InitLTTNG(Environment* env, v8::Local<v8::Object> target);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_LTTNG_H_
diff --git a/src/node_lttng_provider.h b/src/node_lttng_provider.h
index 2b5b9be8d3..5913f39752 100644
--- a/src/node_lttng_provider.h
+++ b/src/node_lttng_provider.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_LTTNG_PROVIDER_H_
 #define SRC_NODE_LTTNG_PROVIDER_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #define TRACEPOINT_CREATE_PROBES
 #define TRACEPOINT_DEFINE
 #include "node_lttng_tp.h"
@@ -99,4 +101,6 @@ bool NODE_NET_STREAM_END_ENABLED() { return true; }
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_LTTNG_PROVIDER_H_
diff --git a/src/node_lttng_tp.h b/src/node_lttng_tp.h
index 53d04f47a8..baa3db2ce0 100644
--- a/src/node_lttng_tp.h
+++ b/src/node_lttng_tp.h
@@ -1,3 +1,5 @@
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #undef TRACEPOINT_PROVIDER
 #define TRACEPOINT_PROVIDER node
 
@@ -128,3 +130,5 @@ TRACEPOINT_EVENT(
 #endif /* __NODE_LTTNG_TP_H */
 
 #include <lttng/tracepoint-event.h>
+
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
diff --git a/src/node_revert.h b/src/node_revert.h
index 6a0f9b452e..b4c3633e94 100644
--- a/src/node_revert.h
+++ b/src/node_revert.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_REVERT_H_
 #define SRC_NODE_REVERT_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 
 /**
@@ -41,4 +43,6 @@ bool IsReverted(const char * cve);
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_REVERT_H_
diff --git a/src/node_root_certs.h b/src/node_root_certs.h
index 866f75fd36..f00de758b8 100644
--- a/src/node_root_certs.h
+++ b/src/node_root_certs.h
@@ -1,3 +1,4 @@
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 /* GlobalSign Root CA */
 "-----BEGIN CERTIFICATE-----\n"
@@ -3881,3 +3882,5 @@
 "1T2wdKyUpOgOPQB0TKGXa/kNUTyh2Tv0Daupn75OcsqF1NnstTJFGG+rrQIwfcf3aWMvoeGY\n"
 "7xMQ0Xk/0f7qO3/eVvSQsRUR2LIiFdAvwyYua/GRspBl9JrmkO5K\n"
 "-----END CERTIFICATE-----\n",
+
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
diff --git a/src/node_stat_watcher.h b/src/node_stat_watcher.h
index bc7929880b..6978f602e1 100644
--- a/src/node_stat_watcher.h
+++ b/src/node_stat_watcher.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_STAT_WATCHER_H_
 #define SRC_NODE_STAT_WATCHER_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "async-wrap.h"
 #include "env.h"
@@ -35,4 +37,7 @@ class StatWatcher : public AsyncWrap {
 };
 
 }  // namespace node
+
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_STAT_WATCHER_H_
diff --git a/src/node_watchdog.h b/src/node_watchdog.h
index ead31ce66d..36125ac0e1 100644
--- a/src/node_watchdog.h
+++ b/src/node_watchdog.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_WATCHDOG_H_
 #define SRC_NODE_WATCHDOG_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "v8.h"
 #include "uv.h"
 
@@ -32,4 +34,6 @@ class Watchdog {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_WATCHDOG_H_
diff --git a/src/node_win32_etw_provider-inl.h b/src/node_win32_etw_provider-inl.h
index 04cd31cee3..efc11ab0b9 100644
--- a/src/node_win32_etw_provider-inl.h
+++ b/src/node_win32_etw_provider-inl.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_WIN32_ETW_PROVIDER_INL_H_
 #define SRC_NODE_WIN32_ETW_PROVIDER_INL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node_win32_etw_provider.h"
 #include "node_etw_provider.h"
 
@@ -265,4 +267,6 @@ bool NODE_V8SYMBOL_ENABLED() { return events_enabled > 0; }
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_WIN32_ETW_PROVIDER_INL_H_
diff --git a/src/node_win32_etw_provider.h b/src/node_win32_etw_provider.h
index 23242349cd..baf9e38539 100644
--- a/src/node_win32_etw_provider.h
+++ b/src/node_win32_etw_provider.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_WIN32_ETW_PROVIDER_H_
 #define SRC_NODE_WIN32_ETW_PROVIDER_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node_dtrace.h"
 #include <evntprov.h>
 
@@ -71,4 +73,6 @@ INLINE bool NODE_V8SYMBOL_ENABLED();
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_WIN32_ETW_PROVIDER_H_
diff --git a/src/node_win32_perfctr_provider.h b/src/node_win32_perfctr_provider.h
index f1645f4bf8..315e32b029 100644
--- a/src/node_win32_perfctr_provider.h
+++ b/src/node_win32_perfctr_provider.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_WIN32_PERFCTR_PROVIDER_H_
 #define SRC_NODE_WIN32_PERFCTR_PROVIDER_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #if defined(_MSC_VER)
 # define INLINE __forceinline
 #else
@@ -30,4 +32,6 @@ void TermPerfCountersWin32();
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_WIN32_PERFCTR_PROVIDER_H_
diff --git a/src/node_wrap.h b/src/node_wrap.h
index b2d6af8ad5..15cea7beda 100644
--- a/src/node_wrap.h
+++ b/src/node_wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_NODE_WRAP_H_
 #define SRC_NODE_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "env.h"
 #include "env-inl.h"
 #include "js_stream.h"
@@ -49,4 +51,6 @@ inline uv_stream_t* HandleToStream(Environment* env,
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_NODE_WRAP_H_
diff --git a/src/pipe_wrap.h b/src/pipe_wrap.h
index eb3d18b80d..f4784ac13a 100644
--- a/src/pipe_wrap.h
+++ b/src/pipe_wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_PIPE_WRAP_H_
 #define SRC_PIPE_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "async-wrap.h"
 #include "env.h"
 #include "stream_wrap.h"
@@ -44,5 +46,6 @@ class PipeWrap : public StreamWrap {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #endif  // SRC_PIPE_WRAP_H_
diff --git a/src/req-wrap-inl.h b/src/req-wrap-inl.h
index 653babd2a7..84af22023d 100644
--- a/src/req-wrap-inl.h
+++ b/src/req-wrap-inl.h
@@ -1,6 +1,8 @@
 #ifndef SRC_REQ_WRAP_INL_H_
 #define SRC_REQ_WRAP_INL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "req-wrap.h"
 #include "async-wrap.h"
 #include "async-wrap-inl.h"
@@ -39,4 +41,6 @@ void ReqWrap<T>::Dispatched() {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_REQ_WRAP_INL_H_
diff --git a/src/req-wrap.h b/src/req-wrap.h
index 240df76ebf..e226dc6395 100644
--- a/src/req-wrap.h
+++ b/src/req-wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_REQ_WRAP_H_
 #define SRC_REQ_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "async-wrap.h"
 #include "env.h"
 #include "util.h"
@@ -27,4 +29,6 @@ class ReqWrap : public AsyncWrap {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_REQ_WRAP_H_
diff --git a/src/spawn_sync.h b/src/spawn_sync.h
index fab2f09eef..9f53f0a22b 100644
--- a/src/spawn_sync.h
+++ b/src/spawn_sync.h
@@ -1,6 +1,8 @@
 #ifndef SRC_SPAWN_SYNC_H_
 #define SRC_SPAWN_SYNC_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "node_buffer.h"
 
@@ -222,4 +224,6 @@ class SyncProcessRunner {
 };
 }
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_SPAWN_SYNC_H_
diff --git a/src/stream_base-inl.h b/src/stream_base-inl.h
index bdc8211707..a34c01082d 100644
--- a/src/stream_base-inl.h
+++ b/src/stream_base-inl.h
@@ -1,6 +1,8 @@
 #ifndef SRC_STREAM_BASE_INL_H_
 #define SRC_STREAM_BASE_INL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "stream_base.h"
 
 #include "node.h"
@@ -162,4 +164,6 @@ char* WriteWrap::Extra(size_t offset) {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_STREAM_BASE_INL_H_
diff --git a/src/stream_base.h b/src/stream_base.h
index e722a208a8..903b94f346 100644
--- a/src/stream_base.h
+++ b/src/stream_base.h
@@ -1,6 +1,8 @@
 #ifndef SRC_STREAM_BASE_H_
 #define SRC_STREAM_BASE_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "env.h"
 #include "async-wrap.h"
 #include "req-wrap.h"
@@ -270,4 +272,6 @@ class StreamBase : public StreamResource {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_STREAM_BASE_H_
diff --git a/src/stream_wrap.h b/src/stream_wrap.h
index b0d9986db5..e930670202 100644
--- a/src/stream_wrap.h
+++ b/src/stream_wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_STREAM_WRAP_H_
 #define SRC_STREAM_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "stream_base.h"
 
 #include "env.h"
@@ -103,5 +105,6 @@ class StreamWrap : public HandleWrap, public StreamBase {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #endif  // SRC_STREAM_WRAP_H_
diff --git a/src/string_bytes.h b/src/string_bytes.h
index 4b83b7c0f4..75d70defe3 100644
--- a/src/string_bytes.h
+++ b/src/string_bytes.h
@@ -1,6 +1,8 @@
 #ifndef SRC_STRING_BYTES_H_
 #define SRC_STRING_BYTES_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 // Decodes a v8::Local<v8::String> or Buffer to a raw char*
 
 #include "v8.h"
@@ -108,4 +110,6 @@ class StringBytes {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_STRING_BYTES_H_
diff --git a/src/string_search.h b/src/string_search.h
index 0426fd840c..b60457da2a 100644
--- a/src/string_search.h
+++ b/src/string_search.h
@@ -5,6 +5,8 @@
 #ifndef SRC_STRING_SEARCH_H_
 #define SRC_STRING_SEARCH_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include <string.h>
 
@@ -674,4 +676,6 @@ size_t SearchString(const Char* haystack,
 }
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_STRING_SEARCH_H_
diff --git a/src/tcp_wrap.h b/src/tcp_wrap.h
index 4810f1dc1b..af2d08d1ae 100644
--- a/src/tcp_wrap.h
+++ b/src/tcp_wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_TCP_WRAP_H_
 #define SRC_TCP_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "async-wrap.h"
 #include "env.h"
 #include "stream_wrap.h"
@@ -52,5 +54,6 @@ class TCPWrap : public StreamWrap {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #endif  // SRC_TCP_WRAP_H_
diff --git a/src/tls_wrap.h b/src/tls_wrap.h
index 471a92056d..3e470f9c6d 100644
--- a/src/tls_wrap.h
+++ b/src/tls_wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_TLS_WRAP_H_
 #define SRC_TLS_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "node.h"
 #include "node_crypto.h"  // SSLWrap
 
@@ -165,4 +167,6 @@ class TLSWrap : public AsyncWrap,
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_TLS_WRAP_H_
diff --git a/src/tty_wrap.h b/src/tty_wrap.h
index 581972a3b9..5e0517598b 100644
--- a/src/tty_wrap.h
+++ b/src/tty_wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_TTY_WRAP_H_
 #define SRC_TTY_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "env.h"
 #include "handle_wrap.h"
 #include "stream_wrap.h"
@@ -34,4 +36,6 @@ class TTYWrap : public StreamWrap {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_TTY_WRAP_H_
diff --git a/src/udp_wrap.h b/src/udp_wrap.h
index 2a92cb340d..0d33e617c0 100644
--- a/src/udp_wrap.h
+++ b/src/udp_wrap.h
@@ -1,6 +1,8 @@
 #ifndef SRC_UDP_WRAP_H_
 #define SRC_UDP_WRAP_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "async-wrap.h"
 #include "env.h"
 #include "handle_wrap.h"
@@ -70,4 +72,6 @@ class UDPWrap: public HandleWrap {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_UDP_WRAP_H_
diff --git a/src/util-inl.h b/src/util-inl.h
index 355dfcdbee..67fe0bd26c 100644
--- a/src/util-inl.h
+++ b/src/util-inl.h
@@ -1,6 +1,8 @@
 #ifndef SRC_UTIL_INL_H_
 #define SRC_UTIL_INL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "util.h"
 
 namespace node {
@@ -219,4 +221,6 @@ bool StringEqualNoCase(const char* a, const char* b) {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_UTIL_INL_H_
diff --git a/src/util.h b/src/util.h
index 406f6a1f36..077b7beb4d 100644
--- a/src/util.h
+++ b/src/util.h
@@ -1,6 +1,8 @@
 #ifndef SRC_UTIL_H_
 #define SRC_UTIL_H_
 
+#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #include "v8.h"
 
 #include <assert.h>
@@ -304,4 +306,6 @@ class BufferValue : public MaybeStackBuffer<char> {
 
 }  // namespace node
 
+#endif  // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
+
 #endif  // SRC_UTIL_H_