don't re-compute values on first render (unnecessary, values are part of state)

src/LambdaBlock.tsx

@@ -1,11 +1,10 @@
 import type { EditorState } from "./Editor";
-import type { Dynamic } from "./util/extra";
+import type { Dynamic, ResolvedType } from "./types";
 
 
 export interface LambdaBlockState {
   kind: "lambda";
-  env: any;
   paramName: string;
   expr: EditorState;
-  resolved: undefined | Dynamic;
+  resolved: ResolvedType;
 }