It appears equality checks for objects is not supported i.e.: Immutable({a: 1}) !== Immutable({a: 1}) There is no built in equality function either [1] so

It appears equality checks for objects is not supported i.e.: Immutable({a: 1}) !== Immutable({a: 1}) There is no built in equality function either [1] so that seems like that's a big advantage Immutable.js has over this. Maybe seamless-immutable-diff [2] could be a way to do it but I am not sure on the performance. [1]: https://github.com/rtfeldman/seamless-immutable/issues/186 https://github.com/rtfeldman/seamless-immutable/issues/186 [2]: https://www.npmjs.com/package/seamless-immutable-diff https://www.npmjs.com/package/seamless-immutable-diff