src: remove separate definitions for static constexpr members

This is no longer necessary (and actually deprecated) since C++17.

PR-URL: #41755
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Mohammed Keyvanzadeh <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Mestery <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>

Author: addaleax

src/async_wrap.cc

@@ -151,9 +151,6 @@ void AsyncWrap::EmitAfter(Environment* env, double async_id) {
        env->async_hooks_after_function());
 }
 
-// TODO(addaleax): Remove once we're on C++17.
-constexpr double AsyncWrap::kInvalidAsyncId;
-
 static void SetupHooks(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
 

src/node_blob.cc

@@ -482,8 +482,6 @@ InternalFieldInfo* BlobBindingData::Serialize(int index) {
   return info;
 }
 
-constexpr FastStringKey BlobBindingData::type_name;
-
 void Blob::RegisterExternalReferences(ExternalReferenceRegistry* registry) {
   registry->Register(Blob::New);
   registry->Register(Blob::ToArrayBuffer);

src/node_file.cc

@@ -2449,9 +2449,6 @@ InternalFieldInfo* BindingData::Serialize(int index) {
   return info;
 }
 
-// TODO(addaleax): Remove once we're on C++17.
-constexpr FastStringKey BindingData::type_name;
-
 void Initialize(Local<Object> target,
                 Local<Value> unused,
                 Local<Context> context,

src/node_http2.cc

@@ -3135,9 +3135,6 @@ void Http2State::MemoryInfo(MemoryTracker* tracker) const {
   tracker->TrackField("root_buffer", root_buffer);
 }
 
-// TODO(addaleax): Remove once we're on C++17.
-constexpr FastStringKey Http2State::type_name;
-
 // Set up the process.binding('http2') binding.
 void Initialize(Local<Object> target,
                 Local<Value> unused,

src/node_http_parser.cc

@@ -107,9 +107,6 @@ class BindingData : public BaseObject {
   SET_MEMORY_INFO_NAME(BindingData)
 };
 
-// TODO(addaleax): Remove once we're on C++17.
-constexpr FastStringKey BindingData::type_name;
-
 // helper class for the Parser
 struct StringPtr {
   StringPtr() {

src/node_process_methods.cc

@@ -448,8 +448,6 @@ static void ReallyExit(const FunctionCallbackInfo<Value>& args) {
 
 namespace process {
 
-constexpr FastStringKey BindingData::type_name;
-
 BindingData::BindingData(Environment* env, v8::Local<v8::Object> object)
     : SnapshotableObject(env, object, type_int) {
   Local<ArrayBuffer> ab = ArrayBuffer::New(env->isolate(), kBufferSize);

src/node_v8.cc

@@ -142,9 +142,6 @@ void BindingData::MemoryInfo(MemoryTracker* tracker) const {
                       heap_code_statistics_buffer);
 }
 
-// TODO(addaleax): Remove once we're on C++17.
-constexpr FastStringKey BindingData::type_name;
-
 void CachedDataVersionTag(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
   Local<Integer> result =