src: document newer values for --unhandled-rejections flag

These values were added in v15.0.0 by #33475 but were not included in the `node --help` output. Also documents which value is the default. PR-URL: #37899Fixes: #37896 Refs: #33475 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Darshan Sen <[email protected]> Reviewed-By: James M Snell <[email protected]>

Author: glasser

src/node_options.cc

@@ -500,8 +500,12 @@ EnvironmentOptionsParser::EnvironmentOptionsParser(){
  &EnvironmentOptions::trace_warnings,
 kAllowedInEnvironment);
 AddOption("--unhandled-rejections",
-"define unhandled rejections behavior. Options are 'strict' (raise "
-"an error), 'warn' (enforce warnings) or 'none' (silence warnings)",
+"define unhandled rejections behavior. Options are 'strict' "
+"(always raise an error), 'throw' (raise an error unless "
+"'unhandledRejection' hook is set), 'warn' (log a warning), 'none' "
+"(silence warnings), 'warn-with-error-code' (log a warning and set "
+"exit code 1 unless 'unhandledRejection' hook is set). (default: "
+"throw)",
  &EnvironmentOptions::unhandled_rejections,
 kAllowedInEnvironment);
 AddOption("--verify-base-objects",