src: use internal/errors for startSigintWatchdog

Move the throw out of c++ and into js using internal/errors

doc/api/errors.md

@@ -1247,6 +1247,14 @@ range.
 
 Used by the `REPL` module when it cannot parse data from the REPL history file.
 
+<a id="ERR_REPL_STARTSIGINTWATCHDOG_FAILED"></a>
+### ERR_REPL_STARTSIGINTWATCHDOG_FAILED
+
+The `SigintWatchdog` is an internal utility used by the `repl` module to
+monitor for interupt (`SIGINT`) signals received by the process. If this
+utility cannot be started, the `repl` will not function correctly, so an
+error is thrown.
+
 <a id="ERR_REQUIRE_ESM"></a>
 ### ERR_REQUIRE_ESM
 

lib/internal/errors.js

@@ -310,6 +310,7 @@ E('ERR_NO_LONGER_SUPPORTED', '%s is no longer supported');
 E('ERR_OUTOFMEMORY', 'Out of memory');
 E('ERR_OUT_OF_RANGE', 'The "%s" argument is out of range');
 E('ERR_PARSE_HISTORY_DATA', 'Could not parse history data in %s');
+E('ERR_REPL_STARTSIGINTWATCHDOG_FAILED', 'startSigintWatchdog Failed');
 E('ERR_REQUIRE_ESM', 'Must use import to load ES Module: %s');
 E('ERR_SERVER_ALREADY_LISTEN',
   'Listen method has been called more than once without closing.');

lib/repl.js

@@ -227,7 +227,8 @@ function REPLServer(prompt,
       if (self.breakEvalOnSigint) {
         // Start the SIGINT watchdog before entering raw mode so that a very
         // quick Ctrl+C doesn't lead to aborting the process completely.
-        utilBinding.startSigintWatchdog();
+        if (!utilBinding.startSigintWatchdog())
+          throw new errors.Error('ERR_REPL_STARTSIGINTWATCHDOG_FAILED');
         previouslyInRawMode = self._setRawMode(false);
       }
 

src/node_util.cc

@@ -135,10 +135,7 @@ static void SetHiddenValue(const FunctionCallbackInfo<Value>& args) {
 
 void StartSigintWatchdog(const FunctionCallbackInfo<Value>& args) {
   int ret = SigintWatchdogHelper::GetInstance()->Start();
-  if (ret != 0) {
-    Environment* env = Environment::GetCurrent(args);
-    env->ThrowErrnoException(ret, "StartSigintWatchdog");
-  }
+  args.GetReturnValue().Set(ret == 0);
 }