How to check if object is Immutable?

Question

Immutable object can be an instance of:

• Immutable.List
• Immutable.Map
• Immutable.OrderedMap

Answer 1

Immutable.js has isImmutable() function since v4.0.0-rc.1:

 import { isImmutable, Map, List, Stack } from 'immutable';

 isImmutable([]); // false
 isImmutable({}); // false
 isImmutable(Map()); // true
 isImmutable(List()); // true
 isImmutable(Stack()); // true
 isImmutable(Map().asMutable()); // false

If you use one of the previous versions, you can check if object is Immutable this way:

 Immutable.Iterable.isIterable(YOUR_ENTITY)

because all immutables inherit from the Iterable object