NodeJS - List Routes

ListRoutes.js

const express = require("express");
const app = express();

app.get("/apis", (req, res) => {
  let get = app._router.stack.filter(r => r.route && r.route.methods.get).map(r => r.route.path);
  let post = app._router.stack.filter(r => r.route && r.route.methods.post).map(r => r.route.path);
  let put = app._router.stack.filter(r => r.route && r.route.methods.put).map(r => r.route.path);
  let del = app._router.stack.filter(r => r.route && r.route.methods.del).map(r => r.route.path);
  res.send({ "get": get, "post": post, "delete": del, "put": put});
});