Create an object out of dot notation

Question

This is a reverse question to this question.

Given an object x={a:1,b:2} and a string c.d=3, modify object x to the following:

Answer 1

You can do this with lodash.set()

> l=require('lodash')
> x={a:1,b:2};
{ a: 1, b: 2 }
> l.set(x, 'c.d', 3)
{ a: 1, b: 2, c: { d: 3 } }