src: refactor `Environment::GetCurrent()` usage

Make `Environment::GetCurrent()` return `nullptr` if the current
`Context` is not a Node.js context, and for the relevant usage of
this function, either:

- Switch to the better `GetCurrent(args)` variant
- Turn functions in to no-ops where it makes sense
- Make it a `CHECK`, i.e. an API requirement, where it make sense
- Leave a `TODO` comment for verifying what, if anything, is to be done

PR-URL: https://github.com/nodejs/node/pull/22819
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/node_perf.cc b/src/node_perf.cc
index 1564b9582c..da6d571f20 100644
--- a/src/node_perf.cc
+++ b/src/node_perf.cc
@@ -310,6 +310,7 @@ void TimerFunctionCall(const FunctionCallbackInfo<Value>& args) {
   Isolate* isolate = args.GetIsolate();
   HandleScope scope(isolate);
   Environment* env = Environment::GetCurrent(isolate);
+  CHECK_NOT_NULL(env);  // TODO(addaleax): Verify that this is correct.
   Local<Context> context = env->context();
   Local<Function> fn = args.Data().As<Function>();
   size_t count = args.Length();