Get a list of endpoints in your NestJS app

So here is how I get a list of all defined HTTP endpoints in my E2E test in a NestJS app with their default configuration and setup: import { Test, TestingModule } from '@nestjs/testing'; import { SomeModule } from './some/where/some.module'; const moduleFixture: TestingModule = await Test.createTestingModule({ imports: [SomeModule], }).compile(); const app = moduleFixture.createNestApplication(); await app.init(); console.log( app .getHttpServer() ._events.request.router.stack.filter((layer: any) => layer.route) .map((layer: any) => ({ method: Object.keys(layer.route.methods)[0].toUpperCase(), path: layer.route.path, })) ) This is mostly useful when I am banging my head against a brick wall as to why supertest says an endpoint does not exists (the infamous 404 error). So feel free to use this hack whenever you stock in the same spot :). BTW feel free to like this post, subscribe and comment. Instagram: https://www.instagram.com/node.js.developers.kh/ Facebook: https://www.facebook.com/kasirbarati X: https://x.com/kasir_barati YouTube: https://www.youtube.com/@kasir-barati GitHub: https://github.com/kasir-barati/ Dev.to: https://dev.to/kasir-barati LinkedIn: https://linkedin.com/in/kasir-barati

Mar 7, 2025 - 13:55

Get a list of endpoints in your NestJS app

So here is how I get a list of all defined HTTP endpoints in my E2E test in a NestJS app with their default configuration and setup:

import { Test, TestingModule } from '@nestjs/testing';
import { SomeModule } from './some/where/some.module';

const moduleFixture: TestingModule = await Test.createTestingModule({
 imports: [SomeModule],
}).compile();
const app = moduleFixture.createNestApplication();
await app.init();

console.log(
  app
    .getHttpServer()
    ._events.request.router.stack.filter((layer: any) => layer.route)
    .map((layer: any) => ({
      method: Object.keys(layer.route.methods)[0].toUpperCase(),
      path: layer.route.path,
    }))
)

This is mostly useful when I am banging my head against a brick wall as to why supertest says an endpoint does not exists (the infamous 404 error). So feel free to use this hack whenever you stock in the same spot :).

BTW feel free to like this post, subscribe and comment.

Instagram: https://www.instagram.com/node.js.developers.kh/
Facebook: https://www.facebook.com/kasirbarati
X: https://x.com/kasir_barati
YouTube: https://www.youtube.com/@kasir-barati
GitHub: https://github.com/kasir-barati/
Dev.to: https://dev.to/kasir-barati
LinkedIn: https://linkedin.com/in/kasir-barati