Object.assign—override nested property

Question

I have an Object a like that:

const a = {
  user: {
   …
   groups: […]
   …
  }
}

whereby there are a lot more properties in

Answer 1

You asked specifically for an ES6 way with Object.assign, but maybe someone else will prefer my more 'general' answer - you can do it easily with lodash, and personally I think that this solution is more readable.

import * as _ from 'lodash';
_.set(a, 'user.groups', newGroupsValue);

It mutates object.