Variable catchSignalStrings`Const`

catchSignalStrings: readonly [
    "SIGHUP",
    "SIGINT",
    "SIGTERM",
    "SIGQUIT",
    "exit",
    "uncaughtException",
] = ...

Signals that may be passed to ExitCallback as its signal argument. 'unhandledRejection' is not a part of this because those are all turned into 'uncaughtException' errors.