Serialization in Node REST APIs

・1 min read

One of the things I learned a while back was that database columns should not be mapped directly to the JSON responses an API serves (columns can change, backward compatibility etc).
There should be some layer of separation between the logic of forming the response and fetching/querying it.
In Rails we have Active Model Serializers and the new fast_jsonapi gem from Netflix. Is there a widely-used analogous package for Node or some best practices that large-scale organizations using Node (like Ebay, Paypal, Netflix etc) employ?
Assuming we're talking about an API built up on Express.


When it comes to serialising to JSON, I don't think there's a better option than JSON.stringify() in Node, which is what response.json() uses in express, by the way.

If you need to map database objects to response objects, you don't really need to pull in a library, you can just write a function to do any data transformation you need.

const mapPonyToResponse = (pony) =>
    gender: pony.gender || 'female',
    type: types[pony.type].human_readable,
    // And so on.

Django Rest Framework handles this layer of abstraction nicely

Classic DEV Post from Mar 6

GraphQL performance issues & an easy solution

One of the biggest GraphQL flaws is missing of some basic implementations know from REST which are crucial for application performance.

I'm a multilingual developer and architect who's trying to build impactful software everyday.

Be an informed and productive developer.

Sign up (for free)