Fix enum type conversion (TypeStrong#591)

Author: shlomiassaf

src/lib/converter/types/enum.ts

@@ -11,7 +11,7 @@ export class EnumConverter extends ConverterTypeComponent implements TypeTypeCon
      * Test whether this converter can handle the given TypeScript type.
      */
     supportsType(context: Context, type: ts.Type): boolean {
-        return !!(type.flags & ts.TypeFlags.Enum);
+        return !!(type.flags & ts.TypeFlags.EnumLike);
     }
 
     /**

src/lib/converter/types/union-or-intersection.ts

@@ -17,7 +17,7 @@ export class UnionOrIntersectionConverter extends ConverterTypeComponent impleme
      * Test whether this converter can handle the given TypeScript type.
      */
     supportsType(context: Context, type: ts.UnionOrIntersectionType): boolean {
-        return !!(type.flags & ts.TypeFlags.UnionOrIntersection);
+        return !!(type.flags & ts.TypeFlags.UnionOrIntersection) && !(type.flags & ts.TypeFlags.EnumLiteral);
     }
 
     /**