src: clarify OptionEnvvarSettings member names

The term `Environment` in `kAllowedInEnvironment` and
`kDisallowedInEnvironment` has nothing to do with the commonly used
term `node::Environment`. Rename the member to `kAllowedInNodeOptions`
and `kDisallowedInNodeOptions` respectively to reflect they are options
of `OptionEnvvarSettings`.

As `OptionEnvvarSettings` is part of the public embedder APIs, the
legacy names are still preserved.

lib/internal/process/per_thread.js

@@ -267,14 +267,14 @@ const trailingValuesRegex = /=.*$/;
 // from data in the config binding.
 function buildAllowedFlags() {
   const {
-    envSettings: { kAllowedInEnvironment },
+    envSettings: { kAllowedInNodeOptions },
     types: { kBoolean },
   } = internalBinding('options');
   const { options, aliases } = require('internal/options');
 
   const allowedNodeEnvironmentFlags = [];
   for (const { 0: name, 1: info } of options) {
-    if (info.envVarSettings === kAllowedInEnvironment) {
+    if (info.envVarSettings === kAllowedInNodeOptions) {
       ArrayPrototypePush(allowedNodeEnvironmentFlags, name);
       if (info.type === kBoolean) {
         const negatedName = `--no-${name.slice(2)}`;
@@ -291,7 +291,7 @@ function buildAllowedFlags() {
         ArrayPrototypeSplice(recursiveExpansion, 0, 1);
       return ArrayPrototypeEvery(recursiveExpansion, isAccepted);
     }
-    return options.get(to).envVarSettings === kAllowedInEnvironment;
+    return options.get(to).envVarSettings === kAllowedInNodeOptions;
   }
   for (const { 0: from, 1: expansion } of aliases) {
     if (ArrayPrototypeEvery(expansion, isAccepted)) {

src/node.cc

@@ -769,15 +769,15 @@ static ExitCode InitializeNodeWithArgsInternal(
       env_argv.insert(env_argv.begin(), argv->at(0));
 
       const ExitCode exit_code = ProcessGlobalArgsInternal(
-          &env_argv, nullptr, errors, kAllowedInEnvironment);
+          &env_argv, nullptr, errors, kAllowedInNodeOptions);
       if (exit_code != ExitCode::kNoFailure) return exit_code;
     }
   }
 #endif
 
   if (!(flags & ProcessInitializationFlags::kDisableCLIOptions)) {
     const ExitCode exit_code = ProcessGlobalArgsInternal(
-        argv, exec_argv, errors, kDisallowedInEnvironment);
+        argv, exec_argv, errors, kDisallowedInNodeOptions);
     if (exit_code != ExitCode::kNoFailure) return exit_code;
   }
 

src/node.h

@@ -349,8 +349,12 @@ inline std::unique_ptr<InitializationResult> InitializeOncePerProcess(
 }
 
 enum OptionEnvvarSettings {
-  kAllowedInEnvironment,
-  kDisallowedInEnvironment
+  kAllowedInNodeOptions = 0,
+  kDisallowedInNodeOptions = 1,
+  // Deprecated, use kAllowedInNodeOptions instead.
+  kAllowedInEnvironment = kAllowedInNodeOptions,
+  // Deprecated, use kDisallowedInNodeOptions instead.
+  kDisallowedInEnvironment = kDisallowedInNodeOptions,
 };
 
 NODE_EXTERN int ProcessGlobalArgs(std::vector<std::string>* args,

src/node_options-inl.h

@@ -302,7 +302,7 @@ void OptionsParser<Options>::Parse(
     const std::string arg = args.pop_first();
 
     if (arg == "--") {
-      if (required_env_settings == kAllowedInEnvironment)
+      if (required_env_settings == kAllowedInNodeOptions)
         errors->push_back(NotAllowedInEnvErr("--"));
       break;
     }
@@ -374,8 +374,8 @@ void OptionsParser<Options>::Parse(
     auto it = options_.find(name);
 
     if ((it == options_.end() ||
-         it->second.env_setting == kDisallowedInEnvironment) &&
-        required_env_settings == kAllowedInEnvironment) {
+         it->second.env_setting == kDisallowedInNodeOptions) &&
+        required_env_settings == kAllowedInNodeOptions) {
       errors->push_back(NotAllowedInEnvErr(original_name));
       break;
     }