Tidy Props

Tidy Props is a small JavaScript library for picking or removing properties from target objects.

Why do I need it?

There doesn't seem to be a standardized way for dynamically removing properties (key/value pairs) from JavaScript objects.

One of the proposed solutions is to remove them using Object destructuring

const sourceObject = {
  banana: "remove me",
  apple: "keep me",
  lime: "also keep me"
};
const { banana, ...rest } = sourceObject;
console.log(rest); // { apple: 'keep me', lime: 'also keep me' }
 

This works very well for objects from which the props to be removed are either known, or can be dynamically declared and removed but won't scale as nicely if we have, say, an array of 10 property keys we want to remove from the object.

For more details on the above solution see Todd Motto's post on the subject

How does Tidy Props it work?

This library relies on ES6 Proxies for filtering out the object properties (keeping or removing them) and returning an immutable copy of that object with the modified properties

Getting Started

Use npm to install to install Tidy Props.

npm install tidy-props

or yarn

yarn add tidy-props

Usage

Removing properties from Object

import { exclude } from "tidy-props";
 
const sourceObject = {
  banana: "remove me",
  apple: "keep me",
  lime: "also keep me"
};
 
const updatedObject = exclude(sourceObject, ["banana"]);
 
console.log(updatedObject); // { apple: 'keep me', lime: 'also keep me' }

Keeping only the desired properties in a given Object

import { keep } from "tidy-props";
 
const sourceObject = {
  banana: "remove me",
  apple: "select me",
  lime: "also pick me"
};
 
const updatedObject = keep(sourceObject, ["apple", "lime"]);
 
console.log(updatedObject); // { apple:'select me', lime: 'also pick me' }

Contributing

I have created this to tackle the main use cases I have stumbled across while dealing with objects in JavaScript, if you feel like it should have other purposes feel free to create pull requests or add suggestions

License

MIT