Function cleanup

lib/internal/test_runner/runner.js:676–680

()

  // Cleanup function to remove event listener and prevent memory leak
  const cleanup = () => {
    watcher.removeListener('changed', onChanged);
    opts.root.harness.watching = false;
    opts.root.postRun();
  };

  if (opts.signal) {
    kResistStopPropagation ??= require('internal/event_target').kResistStopPropagation;