diff --git a/packages/scripts/src/commands/intergen.sample.ts b/packages/scripts/src/commands/intergen.sample.ts
index 1846cd1..7c07d39 100644
--- a/packages/scripts/src/commands/intergen.sample.ts
+++ b/packages/scripts/src/commands/intergen.sample.ts
@@ -21,6 +21,10 @@ export interface IYear {
   year: number
 }
 
+export interface ITyped<T> {
+  value: T
+}
+
 type AorB = 'A' | 'B'
 
 export class Person {
@@ -40,3 +44,9 @@ export class Person {
 export class Employee extends Person {
   duties: string[] = []
 }
+
+export class Typed<A, B extends 'string', C = 'number'> {
+  a!: ITyped<A>
+  b!: ITyped<B>
+  c!: ITyped<C>
+}
diff --git a/packages/scripts/src/commands/intergen.ts b/packages/scripts/src/commands/intergen.ts
index c5a35f1..913ad18 100644
--- a/packages/scripts/src/commands/intergen.ts
+++ b/packages/scripts/src/commands/intergen.ts
@@ -184,10 +184,6 @@ function delint(sourceFile: ts.SourceFile) {
 
   function delintNode(node: ts.Node) {
     // TODO check which classes are exported
-    // TODO check which interfaces are in use
-    // TODO check which type references are in use in addition to the
-    //      primitives like string, string[], number, number[], boolean,
-    //      boolean[]
     // TODO use typeParameters, for example type A<B> = Array<B>
     switch (node.kind) {
       case ts.SyntaxKind.InterfaceDeclaration:
@@ -207,6 +203,7 @@ function delint(sourceFile: ts.SourceFile) {
           throw new Error('no class name: ' + cls.pos)
           break
         }
+        console.log('type params', cls.typeParameters)
         console.log(cls.name.escapedText, processClassMembers(cls.members))
     }
     ts.forEachChild(node, delintNode)