void failWithError(int processPid, String reason)

Source

void failWithError(int processPid, String reason) {
  displayError("Application failed to start: \n\n$reason");
  Process.killPid(processPid);

  var processFile = new File.fromUri(
      projectDirectory.uri.resolve(pidPathForPid(processPid)));
  try {
    processFile.deleteSync();
  } catch (_) {}
}