OrderedDictionaryTKey, TValueEnumerator Structure

public struct Enumerator : IEnumerator<KeyValuePair<TKey, TValue>>, 
	IDisposable, IEnumerator

Public Structure Enumerator
	Implements IEnumerator(Of KeyValuePair(Of TKey, TValue)), 
	IDisposable, IEnumerator

public value class Enumerator : IEnumerator<KeyValuePair<TKey, TValue>>, 
	IDisposable, IEnumerator

[<SealedAttribute>]
type Enumerator = 
    struct
        inherit ValueType
        interface IEnumerator<KeyValuePair<'TKey, 'TValue>>
        interface IDisposable
        interface IEnumerator
    end

JavaScript supports the use of structures, but not the declaration of new ones.