js-object-utilities

This package has a bunch of helper methods to work with nested objects in JavaScript.

Install

npm i js-object-utilities

API

objectutils.get(obj, key)

This function takes in an object (obj) and a key (key) and returns the value for the given key.

const objectutils = require("js-object-utilities");
console.log(objectutils.get({
	"data": {
		"hello": "world"
	}
}, "data.hello"));

// Will print "world"

objectutils.set(obj, key, value)

This function takes in an object (obj), key (key), and a value (value) and mutates the object setting the value for the given key.

const objectutils = require("js-object-utilities");
const object = {
	"data": {
		"hello": "world"
	}
};
objectutils.set(object, "data.hello", "universe");
console.log(object); // {"data": {"hello": "universe"}}

objectutils.delete(obj, key)

This function takes in an object (obj), and key (key), and deletes the given value for the key you passed in.

const objectutils = require("js-object-utilities");
const object = {
	"data": {
		"hello": "world"
	}
};
objectutils.delete(object, "data.hello");
console.log(object); // {"data": {}}

objectutils.pick(obj, keys)

This function takes in an object (obj), and array of keys (keys), and returns an object for the given keys you passed in.

const objectutils = require("js-object-utilities");
const object = {
	"data": {
		"hello": "world",
		"space": "travel",
		"node": "npm"
	}
};
objectutils.delete(object, ["data.hello", "data.space"]);
console.log(object); // {"data": {"hello": "world", "space": "travel"}}

objectutils.keys(obj)

This function takes in an object (obj), and returns an array of keys included in that object.

const objectutils = require("js-object-utilities");
const object = {
	"data": {
		"hello": "world",
		"space": "travel",
		"node": "npm"
	}
};
console.log(objectutils.keys(object)); // ["data", "data.hello", "data.space", "data.node"]

objectutils.entries(obj)

This function takes in an object (obj), and returns an array of entries included in that object.

const objectutils = require("js-object-utilities");
const object = {
	"data": {
		"hello": "world",
		"space": "travel",
		"node": "npm"
	}
};
console.log(objectutils.keys(object)); // [["data", {"hello": "world", "space": "travel", "node": "npm"}], ["data.hello", "world"], ["data.space", "travel"], ["data.node", "npm]]

objectutils.equals(obj)

This function takes in two values, and returns a boolean representing if they are equal. If objects as passed in it will check to ensure the entire object is identical.

const objectutils = require("js-object-utilities");
const object = {
	"data": {
		"hello": "world",
		"space": "travel",
		"node": "npm"
	}
};
console.log(objectutils.equals(object, {
	"data": {
		"hello": "world",
		"space": "travel",
		"node": "npm"
	}
})); // true

console.log(objectutils.equals(object, {
	"data": {
		"hello": "universe",
		"space": "travel",
		"node": "npm"
	}
})); // false

objectutils.clearEmpties(obj)

This function takes in an object and mutates it to remove all objects with a length of 0.

const objectutils = require("js-object-utilities");
const object = {
	"data": {
		"hello": "world",
		"space": "travel",
		"node": "npm",
		"otherData": {}
	}
};
objectutils.clearEmpties(object);
console.log(object);
// {
// 	"data": {
// 		"hello": "world",
// 		"space": "travel",
// 		"node": "npm",
// 	}
// }

objectutils.isCircular(obj[, searchKey])

This function checks to see if an object is circular. If a search key is passed in it will only return true if the object is circular and the search key is the key that caused the circularity.

const objectutils = require("js-object-utilities");

let object = {};
object.array = {"first": 1};
object.array2 = object;

const isCircular = objectutils.isCircular(object);
console.log(isCircular); // true

const isRandomKeyCircular = objectutils.isCircular(object, "random");
console.log(isRandomKeyCircular); // false

const isArray2KeyCircular = objectutils.isCircular(object, "array2");
console.log(isArray2KeyCircular); // true