diff --git a/build.gradle b/build.gradle
index 095935c..208bab7 100644
--- a/build.gradle
+++ b/build.gradle
@@ -42,7 +42,6 @@ junitPlatform {
 apply plugin: 'kotlin'
 
 repositories {
-    maven { url "https://dl.bintray.com/jetbrains/spek" }
     mavenCentral()
 }
 
@@ -51,8 +50,8 @@ dependencies {
     compile "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
 
     testCompile 'com.winterbe:expekt:0.5.0'
-    testCompile 'org.jetbrains.spek:spek-api:1.1.0-beta3'
+    testCompile 'org.jetbrains.spek:spek-api:1.1.0'
     testRuntime 'org.junit.platform:junit-platform-launcher:1.0.0-M3'
-    testRuntime 'org.jetbrains.spek:spek-junit-platform-engine:1.1.0-beta3'
+    testRuntime 'org.jetbrains.spek:spek-junit-platform-engine:1.1.0'
     testCompile 'com.google.code.findbugs:jsr305:3.0.1'
 }
diff --git a/src/main/kotlin/me/ntrrgc/tsGenerator/TypeScriptGenerator.kt b/src/main/kotlin/me/ntrrgc/tsGenerator/TypeScriptGenerator.kt
index 0d34c96..7f6aaa5 100644
--- a/src/main/kotlin/me/ntrrgc/tsGenerator/TypeScriptGenerator.kt
+++ b/src/main/kotlin/me/ntrrgc/tsGenerator/TypeScriptGenerator.kt
@@ -24,6 +24,7 @@ import kotlin.reflect.full.createType
 import kotlin.reflect.full.isSubclassOf
 import kotlin.reflect.full.superclasses
 import kotlin.reflect.jvm.javaType
+import me.ntrrgc.tsGenerator.defaultEnumTransformer
 
 /**
  * TypeScript definition generator.
@@ -78,7 +79,9 @@ class TypeScriptGenerator(
     private val mappings: Map<KClass<*>, String> = mapOf(),
     classTransformers: List<ClassTransformer> = listOf(),
     ignoreSuperclasses: Set<KClass<*>> = setOf(),
-    private val intTypeName: String = "number"
+    private val intTypeName: String = "number",
+    addExportStatements: Boolean = false,
+    private val enumTransformer: (KClass<*>, Any) -> String = ::defaultEnumTransformer
 ) {
     private val visitedClasses: MutableSet<KClass<*>> = java.util.HashSet()
     private val generatedDefinitions = mutableListOf<String>()
@@ -88,6 +91,7 @@ class TypeScriptGenerator(
         java.io.Serializable::class,
         Comparable::class
     ).plus(ignoreSuperclasses)
+    private val export = if (addExportStatements) "export " else ""
 
     init {
         rootClasses.forEach { visitClass(it) }
@@ -183,9 +187,9 @@ class TypeScriptGenerator(
     }
 
     private fun generateEnum(klass: KClass<*>): String {
-        return "type ${klass.simpleName} = ${klass.java.enumConstants
-            .map { constant: Any ->
-                constant.toString().toJSString()
+        return "${export}type ${klass.simpleName} = ${klass.java.enumConstants
+            .map { constant: Any -> 
+                enumTransformer(klass, constant).toJSString()
             }
             .joinToString(" | ")
         };"
@@ -220,7 +224,7 @@ class TypeScriptGenerator(
             ""
         }
 
-        return "interface ${klass.simpleName}$templateParameters$extendsString {\n" +
+        return "${export}interface ${klass.simpleName}$templateParameters$extendsString {\n" +
             klass.declaredMemberProperties
                 .filter { !isFunctionType(it.returnType.javaType) }
                 .filter {
diff --git a/src/main/kotlin/me/ntrrgc/tsGenerator/defaultEnumTransformer.kt b/src/main/kotlin/me/ntrrgc/tsGenerator/defaultEnumTransformer.kt
new file mode 100644
index 0000000..cbbf8ef
--- /dev/null
+++ b/src/main/kotlin/me/ntrrgc/tsGenerator/defaultEnumTransformer.kt
@@ -0,0 +1,5 @@
+package me.ntrrgc.tsGenerator
+
+import kotlin.reflect.KClass
+
+fun defaultEnumTransformer(klass: KClass<*>, enumValue: Any) = enumValue.toString()
\ No newline at end of file