diff --git a/index.dart.js b/index.dart.js
index 7a518c0..f2de514 100644
--- a/index.dart.js
+++ b/index.dart.js
@@ -834,10 +834,10 @@
                 return new H.c7(a, b, c, d.k("c7<0>"))
             },
             cU() {
-                return new P.bg("No element")
+                return new P.set_error_test("No element")
             },
             lg() {
-                return new P.bg("Too many elements")
+                return new P.set_error_test("Too many elements")
             },
             d0: function d0(a) {
                 this.a = a
@@ -1152,7 +1152,7 @@
             bz(a) {
                 throw H.b(P.V(a))
             },
-            ah(a) {
+            TypeErrorDecoder_extract_attern(a) {
                 var s, r, q, p, o, n
                 a = H.jY(a.replace(String({}), "$receiver$"))
                 s = a.match(/\\\$[a-zA-Z]+\\\$/g)
@@ -1164,7 +1164,7 @@
                 n = s.indexOf("\\$receiver\\$")
                 return new H.fc(a.replace(new RegExp("\\\\\\$arguments\\\\\\$", "g"), "((?:x|[^x])*)").replace(new RegExp("\\\\\\$argumentsExpr\\\\\\$", "g"), "((?:x|[^x])*)").replace(new RegExp("\\\\\\$expr\\\\\\$", "g"), "((?:x|[^x])*)").replace(new RegExp("\\\\\\$method\\\\\\$", "g"), "((?:x|[^x])*)").replace(new RegExp("\\\\\\$receiver\\\\\\$", "g"), "((?:x|[^x])*)"), r, q, p, o, n)
             },
-            fd(a) {
+            TypeErrorDecoder_provoke_call_error_on(a) {
                 return function ($expr$) {
                     var $argumentsExpr$ = "$arguments$"
                     try {
@@ -1174,7 +1174,7 @@
                     }
                 }(a)
             },
-            ji(a) {
+            TypeErrorDecoder_provoke_property_error_on(a) {
                 return function ($expr$) {
                     try {
                         $expr$.$method$
@@ -1183,22 +1183,22 @@
                     }
                 }(a)
             },
-            hO(a, b) {
-                var s = b == null,
-                    r = s ? null : b.method
-                return new H.d_(a, r, s ? null : b.receiver)
+            JsNoSuchMethodError(message, match) {
+                var t1 = match == null,
+                    t2 = t1 ? null : match.method
+                return new H.d_(message, t2, t1 ? null : match.receiver)
             },
-            x(a) {
+            unwrap_Exception(a) {
                 if (a == null) return new H.eY(a)
-                if (a instanceof H.bI) return H.aC(a, a.a)
+                if (a instanceof H.bI) return H.save_stack_trace(a, a.a)
                 if (typeof a !== "object") return a
-                if ("dartException" in a) return H.aC(a, a.dartException)
+                if ("dartException" in a) return H.save_stack_trace(a, a.dartException)
                 return H.n_(a)
             },
-            aC(a, b) {
-                if (t.R.b(b))
-                    if (b.$thrownJsError == null) b.$thrownJsError = a
-                return b
+            save_stack_trace(ex, error) {
+                if (t.R.b(error))
+                    if (error.$thrownJsError == null) error.$thrownJsError = ex
+                return error
             },
             n_(a) {
                 var s, r, q, p, o, n, m, l, k, j, i, h, g, f, e = null
@@ -1209,11 +1209,11 @@
                     q = r & 65535
                     if ((C.a.O(r, 16) & 8191) === 10) switch (q) {
                         case 438:
-                            return H.aC(a, H.hO(H.d(s) + " (Error " + q + ")", e))
+                            return H.save_stack_trace(a, H.JsNoSuchMethodError(H.d(s) + " (Error " + q + ")", e))
                         case 445:
                         case 5007:
                             p = H.d(s) + " (Error " + q + ")"
-                            return H.aC(a, new H.c2(p, e))
+                            return H.save_stack_trace(a, new H.c2(p, e))
                     }
                 }
                 if (a instanceof TypeError) {
@@ -1228,12 +1228,12 @@
                     h = $.kw()
                     g = $.kv()
                     f = o.V(s)
-                    if (f != null) return H.aC(a, H.hO(s, f))
+                    if (f != null) return H.save_stack_trace(a, H.JsNoSuchMethodError(s, f))
                     else {
                         f = n.V(s)
                         if (f != null) {
                             f.method = "call"
-                            return H.aC(a, H.hO(s, f))
+                            return H.save_stack_trace(a, H.JsNoSuchMethodError(s, f))
                         } else {
                             f = m.V(s)
                             if (f == null) {
@@ -1258,10 +1258,10 @@
                                     } else p = !0
                                 } else p = !0
                             } else p = !0
-                            if (p) return H.aC(a, new H.c2(s, f == null ? e : f.method))
+                            if (p) return H.save_stack_trace(a, new H.c2(s, f == null ? e : f.method))
                         }
                     }
-                    return H.aC(a, new H.dB(typeof s == "string" ? s : ""))
+                    return H.save_stack_trace(a, new H.dB(typeof s == "string" ? s : ""))
                 }
                 if (a instanceof RangeError) {
                     if (typeof s == "string" && s.indexOf("call stack") !== -1) return new P.c5()
@@ -1271,7 +1271,7 @@
                         } catch (d) { }
                         return null
                     }(a)
-                    return H.aC(a, new P.a_(!1, e, e, typeof s == "string" ? s.replace(/^RangeError:\s*/, "") : s))
+                    return H.save_stack_trace(a, new P.a_(!1, e, e, typeof s == "string" ? s.replace(/^RangeError:\s*/, "") : s))
                 }
                 if (typeof InternalError == "function" && a instanceof InternalError)
                     if (typeof s == "string" && s === "too much recursion") return new P.c5()
@@ -2188,18 +2188,18 @@
             mC(a) {
                 var s, r, q, p = this,
                     o = t.K
-                if (p === o) return H.bv(p, a, H.mH)
+                if (p === o) return H.bv(p, a, H.is_object)
                 if (!H.an(p))
                     if (!(p === t._)) o = p === o
                     else o = !0
                 else o = !0
-                if (o) return H.bv(p, a, H.mK)
+                if (o) return H.bv(p, a, H.is_top)
                 o = p.y
                 s = o === 6 ? p.z : p
                 if (s === t.cp) r = H.aS
                 else if (s === t.cb || s === t.cY) r = H.mG
                 else if (s === t.N) r = H.mI
-                else r = s === t.y ? H.e8 : null
+                else r = s === t.y ? H.is_bool : null
                 if (r != null) return H.bv(p, a, r)
                 if (s.y === 9) {
                     q = s.z
@@ -2222,8 +2222,8 @@
                     else s = !0
                 else s = !0
                 if (s) r = H.ml
-                else if (q === t.K) r = H.mk
-                else r = H.my
+                else if (q === t.K) r = H.as_top
+                else r = H.general_Nullable_as_check_implementation
                 q.a = r
                 return q.a(a)
             },
@@ -2268,18 +2268,18 @@
                 var s = this
                 if (a == null) return a
                 else if (s.b(a)) return a
-                H.jA(a, s)
+                H.failed_as_check(a, s)
             },
-            my(a) {
+            general_Nullable_as_check_implementation(object) {
                 var s = this
-                if (a == null) return a
-                else if (s.b(a)) return a
-                H.jA(a, s)
+                if (object == null) return object
+                else if (s.b(object)) return object
+                H.failed_as_check(object, s)
             },
-            jA(a, b) {
-                throw H.b(H.m5(H.jn(a, H.jQ(a, b), H.U(b, null))))
+            failed_as_check(a, b) {
+                throw H.b(H.m5(H.Error_compose(a, H.jQ(a, b), H.U(b, null))))
             },
-            jn(a, b, c) {
+            Error_compose(a, b, c) {
                 var s = P.b4(a),
                     r = H.U(b == null ? H.Z(a) : b, null)
                 return s + ": type '" + H.d(r) + "' is not a subtype of type '" + H.d(c) + "'"
@@ -2288,27 +2288,29 @@
                 return new H.cq("TypeError: " + a)
             },
             Q(a, b) {
-                return new H.cq("TypeError: " + H.jn(a, null, b))
+                return new H.cq("TypeError: " + H.Error_compose(a, null, b))
             },
-            mH(a) {
+            is_object(a) {
                 return a != null
             },
-            mk(a) {
+            as_top(a) {
                 return a
             },
-            mK(a) {
+            is_top(a) {
                 return !0
             },
             ml(a) {
                 return a
             },
-            e8(a) {
+            is_bool(a) {
                 return !0 === a || !1 === a
             },
-            oP(a) {
-                if (!0 === a) return !0
-                if (!1 === a) return !1
-                throw H.b(H.Q(a, "bool"))
+            as_bool(object) {
+                if (true === object)
+                    return true;
+                if (false === object)
+                    return false;
+                throw H.b(H.Q(object, "bool"))
             },
             oR(a) {
                 if (!0 === a) return !0
@@ -3634,7 +3636,7 @@
                     k = O.iW(s, q)
                     if (typeof k == "string") r.c = k
                 } catch (f) {
-                    j = H.x(f)
+                    j = H.unwrap_Exception(f)
                     P.jW(j)
                 }
                 return r
@@ -3940,7 +3942,7 @@
                 b.aM(0, a)
             },
             mm(a, b) {
-                b.aN(H.x(a), H.am(a))
+                b.aN(H.unwrap_Exception(a), H.am(a))
             },
             mp(a, b) {
                 var s, r, q = new P.h6(b),
@@ -4509,7 +4511,7 @@
                 try {
                     s = JSON.parse(a)
                 } catch (q) {
-                    r = H.x(q)
+                    r = H.unwrap_Exception(q)
                     p = P.ab(String(r), null, null)
                     throw H.b(p)
                 }
@@ -4549,7 +4551,7 @@
                     s = a.decode(b)
                     return s
                 } catch (r) {
-                    H.x(r)
+                    H.unwrap_Exception(r)
                 }
                 return null
             },
@@ -4900,7 +4902,7 @@
                 return new P.b3(1e6 * a)
             },
             b4(a) {
-                if (typeof a == "number" || H.e8(a) || a == null) return J.aD(a)
+                if (typeof a == "number" || H.is_bool(a) || a == null) return J.aD(a)
                 if (typeof a == "string") return JSON.stringify(a)
                 return P.l6(a)
             },
@@ -4950,7 +4952,7 @@
                 return new P.dz(a)
             },
             S(a) {
-                return new P.bg(a)
+                return new P.set_error_test(a)
             },
             V(a) {
                 return new P.cL(a)
@@ -5071,7 +5073,7 @@
             dz: function dz(a) {
                 this.a = a
             },
-            bg: function bg(a) {
+            set_error_test: function bg(a) {
                 this.a = a
             },
             cL: function cL(a) {
@@ -5149,7 +5151,7 @@
                         return !0
                     }
                 } catch (s) {
-                    H.x(s)
+                    H.unwrap_Exception(s)
                 }
                 return !1
             },
@@ -5158,7 +5160,7 @@
                 return null
             },
             i_(a) {
-                if (a == null || typeof a == "string" || typeof a == "number" || H.e8(a)) return a
+                if (a == null || typeof a == "string" || typeof a == "number" || H.is_bool(a)) return a
                 if (a instanceof P.W) return a.a
                 if (H.jR(a)) return a
                 if (t.f.b(a)) return a
@@ -5342,7 +5344,7 @@
                     s = J.aB(a)
                     if (typeof s.gbJ(a) == "string") q = s.gbJ(a)
                 } catch (r) {
-                    H.x(r)
+                    H.unwrap_Exception(r)
                 }
                 return q
             },
@@ -7121,7 +7123,7 @@
                 p = q
                 return p
             } catch (s) {
-                if (t.b7.b(H.x(s))) {
+                if (t.b7.b(H.unwrap_Exception(s))) {
                     if ((this.c & 1) !== 0) throw H.b(P.y("The error handler of Future.then must return a value of the returned future's type", "onError"))
                     throw H.b(P.y("The error handler of Future.catchError must return a value of the future's type", "onError"))
                 } else throw s
@@ -7219,7 +7221,7 @@
             try {
                 a.aW(new P.fA(p), new P.fB(p), t.P)
             } catch (q) {
-                s = H.x(q)
+                s = H.unwrap_Exception(q)
                 r = H.am(q)
                 P.nC(new P.fC(p, s, r))
             }
@@ -7283,7 +7285,7 @@
             try {
                 p.ay(p.$ti.c.a(a))
             } catch (q) {
-                s = H.x(q)
+                s = H.unwrap_Exception(q)
                 r = H.am(q)
                 p.af(s, r)
             }
@@ -7328,7 +7330,7 @@
                 q = m.a.a
                 l = q.b.b.bI(q.d)
             } catch (p) {
-                s = H.x(p)
+                s = H.unwrap_Exception(p)
                 r = H.am(p)
                 if (m.c) {
                     q = m.b.a.c.a
@@ -7373,7 +7375,7 @@
                 p = q.a
                 q.c = p.b.b.aV(p.d, this.b)
             } catch (o) {
-                s = H.x(o)
+                s = H.unwrap_Exception(o)
                 r = H.am(o)
                 q = this.a
                 q.c = P.eh(s, r)
@@ -7393,7 +7395,7 @@
                     p.b = !1
                 }
             } catch (o) {
-                r = H.x(o)
+                r = H.unwrap_Exception(o)
                 q = H.am(o)
                 p = k.a.a.c
                 n = p.a
@@ -7446,7 +7448,7 @@
                 }
                 P.jF(null, null, this, a)
             } catch (q) {
-                s = H.x(q)
+                s = H.unwrap_Exception(q)
                 r = H.am(q)
                 P.hc(s, r)
             }
@@ -7460,7 +7462,7 @@
                 }
                 P.jG(null, null, this, a, b)
             } catch (q) {
-                s = H.x(q)
+                s = H.unwrap_Exception(q)
                 r = H.am(q)
                 P.hc(s, r)
             }
@@ -7891,7 +7893,7 @@
                 })
                 return s
             } catch (r) {
-                H.x(r)
+                H.unwrap_Exception(r)
             }
             return null
         },
@@ -7906,7 +7908,7 @@
                 })
                 return s
             } catch (r) {
-                H.x(r)
+                H.unwrap_Exception(r)
             }
             return null
         },
@@ -8364,7 +8366,7 @@
             return s != null ? "UnimplementedError: " + s : "UnimplementedError"
         }
     }
-    P.bg.prototype = {
+    P.set_error_test.prototype = {
         j(a) {
             return "Bad state: " + this.a
         }
@@ -9305,19 +9307,19 @@
                 }(a)
                 n = s ? !0 : !(a.attributes instanceof NamedNodeMap)
             } catch (p) {
-                H.x(p)
+                H.unwrap_Exception(p)
             }
             r = "element unprintable"
             try {
                 r = J.aD(a)
             } catch (p) {
-                H.x(p)
+                H.unwrap_Exception(p)
             }
             try {
                 q = W.bH(a)
                 this.cj(a, b, n, r, q, m, l)
             } catch (p) {
-                if (H.x(p) instanceof P.a_) throw p
+                if (H.unwrap_Exception(p) instanceof P.a_) throw p
                 else {
                     this.ai(a, b)
                     window
@@ -9402,7 +9404,7 @@
                         throw H.b(q)
                     }
                 } catch (o) {
-                    H.x(o)
+                    H.unwrap_Exception(o)
                     q = s;
                     ++n.b
                     p = q.parentNode
@@ -9440,7 +9442,7 @@
             var s, r, q, p = this,
                 o = {}
             if (a == null) return a
-            if (H.e8(a)) return a
+            if (H.is_bool(a)) return a
             if (typeof a == "number") return a
             if (typeof a == "string") return a
             if (a instanceof P.b2) return new Date(a.a)
@@ -9514,7 +9516,7 @@
             var s, r, q, p, o, n, m, l, k = this,
                 j = {}
             if (a == null) return a
-            if (H.e8(a)) return a
+            if (H.is_bool(a)) return a
             if (typeof a == "number") return a
             if (typeof a == "string") return a
             if (a instanceof Date) return P.iR(a.getTime(), !0)
@@ -9638,7 +9640,7 @@
                 s = String(this.a)
                 return s
             } catch (r) {
-                H.x(r)
+                H.unwrap_Exception(r)
                 s = this.bT(0)
                 return s
             }
@@ -9785,7 +9787,7 @@
                     return o
                 }
             } catch (n) {
-                H.x(n)
+                H.unwrap_Exception(n)
             }
             return ""
         },
@@ -10019,7 +10021,7 @@
                     for (l = 0; l < r; ++l)
                         if (o.u(m, l)) J.iD(n, l * q, m * q, q, q)
             } catch (f) {
-                H.x(f)
+                H.unwrap_Exception(f)
                 k = H.am(f)
                 j = e.a
                 j = j.style
@@ -10767,7 +10769,7 @@
         q(J.as, [J.dh, J.av, J.ad])
         r(J.eE, J.p)
         q(J.aJ, [J.bP, J.cX])
-        q(P.n, [H.d0, H.dn, H.c1, P.a6, H.d_, H.dB, H.dp, H.dN, P.cD, P.de, P.a_, P.dc, P.dD, P.dz, P.bg, P.cL, P.cN])
+        q(P.n, [H.d0, H.dn, H.c1, P.a6, H.d_, H.dB, H.dp, H.dN, P.cD, P.de, P.a_, P.dc, P.dD, P.dz, P.set_error_test, P.cL, P.cN])
         r(P.bT, P.cg)
         q(P.bT, [H.bm, W.M])
         r(H.ap, H.bm)
@@ -11405,14 +11407,14 @@
             return C.e.bI(new H.hx())
         })
         s($, "oy", "kn", function () {
-            return H.ah(H.fd({
+            return H.TypeErrorDecoder_extract_attern(H.TypeErrorDecoder_provoke_call_error_on({
                 toString: function () {
                     return "$receiver$"
                 }
             }))
         })
         s($, "oz", "ko", function () {
-            return H.ah(H.fd({
+            return H.TypeErrorDecoder_extract_attern(H.TypeErrorDecoder_provoke_call_error_on({
                 $method$: null,
                 toString: function () {
                     return "$receiver$"
@@ -11420,10 +11422,10 @@
             }))
         })
         s($, "oA", "kp", function () {
-            return H.ah(H.fd(null))
+            return H.TypeErrorDecoder_extract_attern(H.TypeErrorDecoder_provoke_call_error_on(null))
         })
         s($, "oB", "kq", function () {
-            return H.ah(function () {
+            return H.TypeErrorDecoder_extract_attern(function () {
                 var $argumentsExpr$ = "$arguments$"
                 try {
                     null.$method$($argumentsExpr$)
@@ -11433,10 +11435,10 @@
             }())
         })
         s($, "oE", "kt", function () {
-            return H.ah(H.fd(void 0))
+            return H.TypeErrorDecoder_extract_attern(H.TypeErrorDecoder_provoke_call_error_on(void 0))
         })
         s($, "oF", "ku", function () {
-            return H.ah(function () {
+            return H.TypeErrorDecoder_extract_attern(function () {
                 var $argumentsExpr$ = "$arguments$"
                 try {
                     (void 0).$method$($argumentsExpr$)
@@ -11446,10 +11448,10 @@
             }())
         })
         s($, "oD", "ks", function () {
-            return H.ah(H.ji(null))
+            return H.TypeErrorDecoder_extract_attern(H.TypeErrorDecoder_provoke_property_error_on(null))
         })
         s($, "oC", "kr", function () {
-            return H.ah(function () {
+            return H.TypeErrorDecoder_extract_attern(function () {
                 try {
                     null.$method$
                 } catch (p) {
@@ -11458,10 +11460,10 @@
             }())
         })
         s($, "oH", "kw", function () {
-            return H.ah(H.ji(void 0))
+            return H.TypeErrorDecoder_extract_attern(H.TypeErrorDecoder_provoke_property_error_on(void 0))
         })
         s($, "oG", "kv", function () {
-            return H.ah(function () {
+            return H.TypeErrorDecoder_extract_attern(function () {
                 try {
                     (void 0).$method$
                 } catch (p) {
diff --git a/out.js b/out.js
index 010787c..4938940 100644
--- a/out.js
+++ b/out.js
@@ -3019,10 +3019,13 @@
         for (b = 12242424242424, i = 0; i < 10; ++i)
           b += b * i;
         A.Future_Future$delayed(new A.Duration(1000000), type$.dynamic).then$1$1(new A.main_closure(), type$.Null);
+        new A.main_closure0().call$0();
         A.print(a);
       },
       main_closure: function main_closure() {
       },
+      main_closure0: function main_closure0() {
+      },
       printString(string) {
         if (typeof dartPrint == "function") {
           dartPrint(string);
@@ -3363,13 +3366,13 @@
     call$0() {
       this.callback.call$0();
     },
-    $signature: 3
+    $signature: 2
   };
   A._AsyncRun__scheduleImmediateWithSetImmediate_internalCallback.prototype = {
     call$0() {
       this.callback.call$0();
     },
-    $signature: 3
+    $signature: 2
   };
   A._TimerImpl.prototype = {
     _TimerImpl$2(milliseconds, callback) {
@@ -3891,12 +3894,18 @@
     },
     $signature: 1
   };
+  A.main_closure0.prototype = {
+    call$0() {
+      A.print("closuer");
+    },
+    $signature: 2
+  };
   (function installTearOffs() {
     var _static_1 = hunkHelpers._static_1,
       _static_0 = hunkHelpers._static_0;
-    _static_1(A, "async__AsyncRun__scheduleImmediateJsOverride$closure", "_AsyncRun__scheduleImmediateJsOverride", 2);
-    _static_1(A, "async__AsyncRun__scheduleImmediateWithSetImmediate$closure", "_AsyncRun__scheduleImmediateWithSetImmediate", 2);
-    _static_1(A, "async__AsyncRun__scheduleImmediateWithTimer$closure", "_AsyncRun__scheduleImmediateWithTimer", 2);
+    _static_1(A, "async__AsyncRun__scheduleImmediateJsOverride$closure", "_AsyncRun__scheduleImmediateJsOverride", 3);
+    _static_1(A, "async__AsyncRun__scheduleImmediateWithSetImmediate$closure", "_AsyncRun__scheduleImmediateWithSetImmediate", 3);
+    _static_1(A, "async__AsyncRun__scheduleImmediateWithTimer$closure", "_AsyncRun__scheduleImmediateWithTimer", 3);
     _static_0(A, "async___startMicrotaskLoop$closure", "_startMicrotaskLoop", 0);
   })();
   (function inheritance() {
@@ -3914,7 +3923,7 @@
     _inheritMany(A.Closure, [A.Closure0Args, A.Closure2Args, A.TearOffClosure, A._AsyncRun__initializeScheduleImmediate_internalCallback, A._AsyncRun__initializeScheduleImmediate_closure, A._Future__chainForeignFuture_closure, A._Future__propagateToListeners_handleWhenCompleteCallback_closure, A.main_closure]);
     _inheritMany(A.TearOffClosure, [A.StaticClosure, A.BoundClosure]);
     _inherit(A._TypeError, A._Error);
-    _inheritMany(A.Closure0Args, [A._AsyncRun__scheduleImmediateJsOverride_internalCallback, A._AsyncRun__scheduleImmediateWithSetImmediate_internalCallback, A._TimerImpl_internalCallback, A.Future_Future$delayed_closure, A._Future__addListener_closure, A._Future__prependListeners_closure, A._Future__chainForeignFuture_closure1, A._Future__propagateToListeners_handleWhenCompleteCallback, A._Future__propagateToListeners_handleValueCallback, A._Future__propagateToListeners_handleError, A._rootHandleError_closure, A._RootZone_bindCallbackGuarded_closure]);
+    _inheritMany(A.Closure0Args, [A._AsyncRun__scheduleImmediateJsOverride_internalCallback, A._AsyncRun__scheduleImmediateWithSetImmediate_internalCallback, A._TimerImpl_internalCallback, A.Future_Future$delayed_closure, A._Future__addListener_closure, A._Future__prependListeners_closure, A._Future__chainForeignFuture_closure1, A._Future__propagateToListeners_handleWhenCompleteCallback, A._Future__propagateToListeners_handleValueCallback, A._Future__propagateToListeners_handleError, A._rootHandleError_closure, A._RootZone_bindCallbackGuarded_closure, A.main_closure0]);
     _inherit(A._Future__chainForeignFuture_closure0, A.Closure2Args);
     _inherit(A._RootZone, A._Zone);
     _inheritMany(A.ArgumentError, [A.RangeError, A.IndexError]);
@@ -3923,7 +3932,7 @@
     typeUniverse: { eC: new Map(), tR: {}, eT: {}, tPV: {}, sEA: [] },
     mangledGlobalNames: { int: "int", double: "double", num: "num", String: "String", bool: "bool", Null: "Null", List: "List", Object: "Object", Map: "Map" },
     mangledNames: {},
-    types: ["~()", "Null(@)", "~(~())", "Null()", "Null(~())", "Null(Object,StackTrace)", "_Future<@>(@)"],
+    types: ["~()", "Null(@)", "Null()", "~(~())", "Null(~())", "Null(Object,StackTrace)", "_Future<@>(@)"],
     arrayRti: Symbol("$ti")
   };
   A._Universe_addRules(init.typeUniverse, JSON.parse('{"PlainJavaScriptObject":"LegacyJavaScriptObject","UnknownJavaScriptObject":"LegacyJavaScriptObject","JSBool":{"bool":[],"TrustedGetRuntimeType":[]},"JSNull":{"Null":[],"TrustedGetRuntimeType":[]},"JSArray":{"Iterable":["1"]},"JSUnmodifiableArray":{"JSArray":["1"],"Iterable":["1"]},"JSNumber":{"num":[]},"JSInt":{"int":[],"num":[],"TrustedGetRuntimeType":[]},"JSNumNotInt":{"num":[],"TrustedGetRuntimeType":[]},"JSString":{"String":[],"TrustedGetRuntimeType":[]},"LateError":{"Error":[]},"NullError":{"TypeError":[],"Error":[]},"JsNoSuchMethodError":{"Error":[]},"UnknownJsTypeError":{"Error":[]},"_StackTrace":{"StackTrace":[]},"Closure":{"Function":[]},"Closure0Args":{"Function":[]},"Closure2Args":{"Function":[]},"TearOffClosure":{"Function":[]},"StaticClosure":{"Function":[]},"BoundClosure":{"Function":[]},"_CyclicInitializationError":{"Error":[]},"RuntimeError":{"Error":[]},"_Error":{"Error":[]},"_TypeError":{"TypeError":[],"Error":[]},"_Future":{"Future":["1"]},"AsyncError":{"Error":[]},"_Zone":{"Zone":[]},"_RootZone":{"_Zone":[],"Zone":[]},"AssertionError":{"Error":[]},"TypeError":{"Error":[]},"ArgumentError":{"Error":[]},"RangeError":{"Error":[]},"IndexError":{"Error":[]},"UnsupportedError":{"Error":[]},"ConcurrentModificationError":{"Error":[]},"OutOfMemoryError":{"Error":[]},"StackOverflowError":{"Error":[]},"_StringStackTrace":{"StackTrace":[]}}'));
@@ -4049,12 +4058,12 @@
   Function.prototype.call$1$1 = function (a) {
     return this(a);
   };
-  Function.prototype.call$1 = function (a) {
-    return this(a);
-  };
   Function.prototype.call$0 = function () {
     return this();
   };
+  Function.prototype.call$1 = function (a) {
+    return this(a);
+  };
   Function.prototype.call$2 = function (a, b) {
     return this(a, b);
   };
diff --git a/test.dart b/test.dart
index 07c1988..2baaa09 100644
--- a/test.dart
+++ b/test.dart
@@ -1,5 +1,6 @@
 // js
-import 'dart:js' as js;
+import 'dart:js' as Js;
+import 'dart:html';
 
 void main() {
   print("Hello, World!");
@@ -16,5 +17,10 @@ void main() {
       print("延时1秒执行 then ");
       print(value);
     });
+
+  var closuer = () {
+    print("closuer");
+  };
+  closuer();
   print(a);
 }
\ No newline at end of file