create-express-typescript-application/create-express-typescript-application-prisma-sample/src/app/server-status/server.status.service.ts

Create a new lightweight Express application with TypeScript

import app from '../../app';

export const getRoutes = () => {
  return new Promise<Array<any>>((resolve, reject) => {
    try {
      let route: any;
      const routes: Array<any> = [];
      app._router.stack.forEach((middleware: any) => {
        if (middleware.route) { // routes registered directly on the app
          routes.push(middleware.route);
        } else if (middleware.name === 'router') { // router middleware 
          middleware.handle.stack.forEach((handler: any) => {
            route = handler.route;
            route && routes.push(route);
          });
        }
      });
      resolve(routes);
    } catch (e) {
      reject(e);
    }
  })
}