createErrorZone function

Zone createErrorZone({ String uncaughtErrorTitle = 'Unhandled exception:', bool printErrorToStderr = true, OnUncaughtError? onUncaughtError, Zone? parentZone, })

Creates an error Zone.

• The uncaughtErrorTitle to use when printing error (if onUncaughtError is not provided).
• If printErrorToStderr is true, prints to STDERR (if onUncaughtError is not provided).
• onUncaughtError is the function to handle uncaught errors. If not provided, prints error.

See printZoneError.

Implementation

Zone createErrorZone({
  String uncaughtErrorTitle = 'Unhandled exception:',
  bool printErrorToStderr = true,
  OnUncaughtError? onUncaughtError,
  Zone? parentZone,
}) {
  var zoneId = ++_errorZoneIDCount;

  var zoneSpecification = ZoneSpecification(
    handleUncaughtError: (self, parent, zone, error, stackTrace) =>
        _handleUncaughtError(
          uncaughtErrorTitle,
          printErrorToStderr,
          onUncaughtError,
          self,
          parent,
          zone,
          error,
          stackTrace,
        ),
  );

  parentZone ??= Zone.current;

  var zone = parentZone.fork(
    specification: zoneSpecification,
    zoneValues: {'zoneID': zoneId},
  );
  return zone;
}