AI Features
Home
Courses
Using fp-ts for Functional Programming in TypeScript

Evaluations

Evaluate our pet service CRUD application.

We'll cover the following...

Qualities

The project has some qualities:

  • Some thought has gone into organizing the code, and the file names give us a pretty good idea of what’s contained within, even if helpers and lib could be more helpful.

  • There are few dependencies, resulting in good performance.It’s quite easy to add a new type of animal as long as no new special behavior is required. Storing information with or without a counter only requires the creation of a new class and routes.

  • Right now, the code isn’t overly complicated (but this is also due to its being a mere example).

Now, what are the specific issues with this project, and what does that tell us about other projects written in a similar style?

The first issue involves the passing of request, response, and next parameters, something express seems to have made popular in the Node ecosystem. For example:

function queryParamValidation(request, response, next) {
    if (!request.query) {
        next();
    } else {
        try {
            // validate
            next();
        } catch (e) {
            return response.sendStatus(400);
        }
    }
}

Code issues

Despite its popularity, this approach includes disadvantages. Most important among them is that a lot of code becomes aware of what ...

Ask