message: Emitted the define:webserver hook and now tests should GREEN.
diff: @@ -180,7 +180,11 @@ Expected to find a ${mdFilenames.join(' or ')} at: ${pathToLocalWct}/
  async (app: express.Express, options: ServerOptions) => {
  await wct.emitHook(
  'define:webserver', app, options,
  - async (substitution: express.Express) => app = substitution);
  + (substitution: express.Express) => {
  + if (substitution) {
  + app = substitution;
  + }
  + });
  return app;
  });
  let servers: Array<MainlineServer|VariantServer>;
  