Check a JS immutable object for plain mutable objects

immutableUtils.js

import { Iterable } from 'immutable'

function checkIsImmutable(obj, path = '') {
  if (Iterable.isIterable(obj)) {
    obj.keySeq().forEach(key => {
      checkIsImmutable(obj.get(key), path + '.' + key);
    });
  } else if (typeof obj === 'object' && obj !== null) {
    console.warn(path + ' was not immutable');
  } else {
    // Basic type
  }
}