Working TraitExpressionBuilder

src/tests.ts

@@ -1,6 +1,4 @@
-import { Call, ComposeLeft } from "hotscript"
-import { Implements, TraitExpressionAbstractFn, abstract, expression, trait } from "."
-import { SimplifyFn } from "./util"
+import { Implements, abstract, expression, trait } from "."
 
 
 const PrintsHelloOnNew = trait(
@@ -60,10 +58,7 @@ const builder = expression
     )
 
 const exp = builder.get()
-type Abs = Call<ComposeLeft<[
-    TraitExpressionAbstractFn,
-    SimplifyFn,
-]>, typeof exp>
+type Abs = Implements<typeof exp>
 
 // exp.subtrait(
 //     s => {