get-deep

A utility function for getting deeply nested values from object.

Overview

You have an object a and want to get a property deeply buried under a.b.c.d.e[3].f.g, but any of these b, c, d,... might be falsy (null or undefined) and break your code. So you do this terrible check

const result = a && a.b && a.b.c && a.b.c && a.b.c.d && a.b.c.d.e && a.b.c.d.e[3] && a.b.c.d.e[3].f && a.b.c.d.e[3].f.g

With get-deep, you can simply do this

import get from 'get-deep';
const result = get(a, 'b.c.d.e', 3, 'f.g');

or if you'd like to complicate things a little bit...

import get from 'get-deep';
const result = get(a, 'b', ['c.d'], [3, ['f', 'g']])

API

get(obj, ...paths)

The first parameter obj is any javascript variable you want to check.

The rest of parameters accept any combination of strings, numbers, or arrays of them (including nested arrays) that will be resolved to path to the nested property.

get-deep will check for any falsy value along the path and return it immediately if there's one.