Immutable Set ------------- ### Examples __Initialization__ ```javascript const a = ImmutableSet([1, 2]); ``` __Extension__ ```javascript const b = a.add(3); ``` __Type__ ```javascript typeof ImmutableSet(); // 'set' ``` ### Prototype Value types are not objects and have no prototype. Member expressions are exposed on the [Immutable Set's prototype](ImmutableSet.prototype.md) which is unique for each realm, just like other value types. This prototype is exposed on the realm's global [ImmutableSet.prototype](ImmutableSet.prototype.md).