Quickly reduce the amount of data your node API returns

When designing an API, it’s easy to forget that not everyone has a cable modem. What if a client could easily request exactly the data it needed. That is what JSON Mask aims to do.

This is a tiny language and an engine for selecting specific parts of a JS object, hiding/masking the rest.

A code example helps to demonstrate how this works.

var mask = require('json-mask')
mask({p: {a: 1, b: 2}, z: 1}, 'p/a,z')  // {p: {a: 1}, z: 1}

JSON Mask seems like an interesting way to reduce the amount of data we send down the pipes.