changepath.js
changePath is a simple function for changing the value at the end of a path through
a javascript data structure.
It does not mututate the source object It respects the source object's prototype chain
Usage:
import {changePath} from 'changepathjs'
const x = {a: { b: [99]}}
const y = changePath(['a','b',0], 66, x)
// {a: { b: [66]}}