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test/codegen/expect/node_modules.js

 'use strict';
 let dart = require("dart/_runtime");
 let core = require("dart/core");
 let dartx = dart.dartx;
 const Callback = dart.typedef('Callback', () => dart.functionType(dart.void, [], {i: core.int}));
 class A extends core.Object {}
 class _A extends core.Object {}
 const B$ = dart.generic(function(T) {
   class B extends core.Object {}
   return B;
 });
 let B = B$();
 const _B$ = dart.generic(function(T) {
   class _B extends core.Object {}
   return _B;
 });
 let _B = _B$();
 function f() {
 }
 dart.fn(f);
 function _f() {
 }
 dart.fn(_f);
 const constant = "abc";
 exports.finalConstant = "abc";
 dart.defineLazyProperties(exports, {
   get lazy() {
-    return dart.as(dart.fn(() => {
+    return dart.fn(() => {
       core.print('lazy');
       return "abc";
-    })(), core.String);
+    }, core.String, [])();
   }
 });
 exports.mutable = "abc";
 dart.defineLazyProperties(exports, {
   get lazyMutable() {
-    return dart.as(dart.fn(() => {
+    return dart.fn(() => {
       core.print('lazyMutable');
       return "abc";
-    })(), core.String);
+    }, core.String, [])();
   },
   set lazyMutable(_) {}
 });
 // Exports:
 exports.Callback = Callback;
 exports.A = A;
 exports.B$ = B$;
 exports.B = B;
 exports.f = f;
 exports.constant = constant;