selfapi.js
function isServerApp (app) {
  return !!(app && (app.use || app.handle) && app.get && app.post);
}
function isServerApp (app) {
  return !!(app && (app.use || app.handle) && app.get && app.post);
}
function isServerApp ( app ) { return ! ! ( app && ( app . use || app . handle ) && app . get && app . post ) ; }
Detect if `app` is an express-like server.
Detect if app is an express - like server .