supertest VS ESLint

Supertest is quite popular and easy to use test tool, you can do integration and E2E test as well, you just need to pass it the server instance or a string to make a request and assert over the response.

If the latter, there are a bunch of different options for writing automated tests. One popular way is using Jest to run your tests. If you're trying to test the backend end-to-end flow, you could use Supertest to make requests and assert on the responses.

I did something similar with a full stack Typescript project, using supertest and node-fetch. It was nice.

Unit, Integration and E2E tests using Jest and Supertest

This is why integration tests > unit tests. I really hate mocking and I never bother testing individual units that don't affect how users use my app and code. In your case, I'd just use something like supertest to test this functionality e2e.

Yes, but when every function handler is separate from the router, then you can use node-mocks-http to test each handler, to test the router is simpler to use supertest to write integration tests, for E2E tests I personally recommend [pactum](pactumjs.github.io/)

Simple booking api attempt with Typescript, Express, TypeORM and Postgres. Testing with Jest & Supertest.

In a Node.js application, writing API tests is a good start. They provide more coverage than unit testing. You can use frameworks like Supertest, Jest, or any other library that provides a high-level abstraction for testing APIs.

supertest npm package that helps test HTTP

If you want to write integration tests - https://jestjs.io - https://github.com/visionmedia/supertest

Automating code checks with static code analysis allows us to enforce code styling effectively. By integrating tools into our workflow, we can identify errors at an early stage, while coding instead of blocking us at the end. For instance, flake8 checks Python code for style and errors, eslint performs similar checks for JavaScript, and prettier automatically formats code to maintain consistency.

If you're a developer, you're surely familiar with Prettier and ESLint. With over 8 years of existence, they have established themselves as references in the JavaScript ecosystem.

eslint is used to avoid code errors

No lint errors: The committed code does not contain any lint errors (eslint).

Let’s walk through the steps for a one-time setup to configure husky pre-commit and pre-push hooks, ESLint with code styles conventions, prettier code formatter, and lint-staged. Husky automatically runs a script on each commit or push. This is useful for linting files to enforce code styles that keeps the entire code base following conventions.

GitHub | Website

ESLint: A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript.

ESLint

1. Lack of Static Code Analysis Static code analysis tools like TypeScript and ESLint play a crucial role in identifying and preventing bugs. TypeScript provides static typing, enhancing the robustness of the code. ESLint detects issues and enforces coding standards. The absence of these tools can significantly elevate the likelihood of bugs due to the lack of early detection and guidance provided during development.

The industry standard for JavaScript is ESLint. VS Code has an ESLint extension. Here is a guide.