docs: add enum class as valid exportable type (#4831)

Author: lppedd

docs/topics/js/js-to-kotlin-interop.md

@@ -160,30 +160,31 @@ and setter methods static members in that object or the class containing the com
 
 See how Kotlin types are mapped to JavaScript ones:
 
-| Kotlin                                                                      | JavaScript                 | Comments                                                                                  |
-|-----------------------------------------------------------------------------|----------------------------|-------------------------------------------------------------------------------------------|
-| `Byte`, `Short`, `Int`, `Float`, `Double`                                   | `Number`                   |                                                                                           |
-| `Char`                                                                      | `Number`                   | The number represents the character's code.                                               |
-| `Long`                                                                      | Not supported              | There is no 64-bit integer number type in JavaScript, so it is emulated by a Kotlin class. |
-| `Boolean`                                                                   | `Boolean`                  |                                                                                           |
-| `String`                                                                    | `String`                   |                                                                                           |
-| `Array`                                                                     | `Array`                    |                                                                                           |
-| `ByteArray`                                                                 | `Int8Array`                |                                                                                           |
-| `ShortArray`                                                                | `Int16Array`               |                                                                                           |
-| `IntArray`                                                                  | `Int32Array`               |                                                                                           |
-| `CharArray`                                                                 | `UInt16Array`              | Carries the property `$type$ == "CharArray"`.                                             |
-| `FloatArray`                                                                | `Float32Array`             |                                                                                           |
-| `DoubleArray`                                                               | `Float64Array`             |                                                                                           |
-| `LongArray`                                                                 | `Array<kotlin.Long>`       | Carries the property `$type$ == "LongArray"`. Also see Kotlin's Long type comment.        |
-| `BooleanArray`                                                              | `Int8Array`                | Carries the property `$type$ == "BooleanArray"`.                                          |
-| `List`, `MutableList`                                                       | `KtList`, `KtMutableList`  | Exposes an `Array` via `KtList.asJsReadonlyArrayView` or `KtMutableList.asJsArrayView`.   |
-| `Map`, `MutableMap`                                                         | `KtMap`, `KtMutableMap`    | Exposes an ES2015 `Map` via `KtMap.asJsReadonlyMapView` or `KtMutableMap.asJsMapView`.    |
-| `Set`, `MutableSet`                                                         | `KtSet`, `KtMutableSet`    | Exposes an ES2015 `Set` via `KtSet.asJsReadonlySetView` or `KtMutableSet.asJsSetView`.    |
-| `Unit`                                                                      | Undefined                  | Exportable when used as return type, but not when used as parameter type.                 |
-| `Any`                                                                       | `Object`                   |                                                                                           |
-| `Throwable`                                                                 | `Error`                    |                                                                                           |
-| Nullable `Type?`                                                            | `Type | null | undefined`  |                                                                                            |
-| All other Kotlin types (except for those marked with `JsExport` annotation) | Not supported              | Includes Kotlin's [unsigned integer types](unsigned-integer-types.md).                    |
+| Kotlin                                                           | JavaScript                | Comments                                                                                   |
+|------------------------------------------------------------------|---------------------------|--------------------------------------------------------------------------------------------|
+| `Byte`, `Short`, `Int`, `Float`, `Double`                        | `Number`                  |                                                                                            |
+| `Char`                                                           | `Number`                  | The number represents the character's code.                                                |
+| `Long`                                                           | Not supported             | There is no 64-bit integer number type in JavaScript, so it is emulated by a Kotlin class. |
+| `Boolean`                                                        | `Boolean`                 |                                                                                            |
+| `String`                                                         | `String`                  |                                                                                            |
+| `Array`                                                          | `Array`                   |                                                                                            |
+| `ByteArray`                                                      | `Int8Array`               |                                                                                            |
+| `ShortArray`                                                     | `Int16Array`              |                                                                                            |
+| `IntArray`                                                       | `Int32Array`              |                                                                                            |
+| `CharArray`                                                      | `UInt16Array`             | Carries the property `$type$ == "CharArray"`.                                              |
+| `FloatArray`                                                     | `Float32Array`            |                                                                                            |
+| `DoubleArray`                                                    | `Float64Array`            |                                                                                            |
+| `LongArray`                                                      | `Array<kotlin.Long>`      | Carries the property `$type$ == "LongArray"`. Also see Kotlin's Long type comment.         |
+| `BooleanArray`                                                   | `Int8Array`               | Carries the property `$type$ == "BooleanArray"`.                                           |
+| `List`, `MutableList`                                            | `KtList`, `KtMutableList` | Exposes an `Array` via `KtList.asJsReadonlyArrayView` or `KtMutableList.asJsArrayView`.    |
+| `Map`, `MutableMap`                                              | `KtMap`, `KtMutableMap`   | Exposes an ES2015 `Map` via `KtMap.asJsReadonlyMapView` or `KtMutableMap.asJsMapView`.     |
+| `Set`, `MutableSet`                                              | `KtSet`, `KtMutableSet`   | Exposes an ES2015 `Set` via `KtSet.asJsReadonlySetView` or `KtMutableSet.asJsSetView`.     |
+| `Unit`                                                           | Undefined                 | Exportable when used as return type, but not when used as parameter type.                  |
+| `Any`                                                            | `Object`                  |                                                                                            |
+| `Throwable`                                                      | `Error`                   |                                                                                            |
+| `enum class Type`                                                | `Type`                    | Enum entries are exposed as static class properties (`Type.ENTRY`).                        |
+| Nullable `Type?`                                                 | `Type | null | undefined` |                                                                                            |
+| All other Kotlin types, except for those marked with `@JsExport` | Not supported             | Includes Kotlin's [unsigned integer types](unsigned-integer-types.md).                     |
 
 Additionally, it is important to know that: