pkg/dev_compiler/lib/js/es6/dart_sdk.js

Index: pkg/dev_compiler/lib/js/es6/dart_sdk.js
diff --git a/pkg/dev_compiler/lib/js/es6/dart_sdk.js b/pkg/dev_compiler/lib/js/es6/dart_sdk.js
index 3d20fb2bc33e8d074e0f51a8cdf397d4e6bb4de4..91a48c5a329c40b590c391149c2720c5fca4a447 100644
--- a/pkg/dev_compiler/lib/js/es6/dart_sdk.js
+++ b/pkg/dev_compiler/lib/js/es6/dart_sdk.js
@@ -32626,6 +32626,16 @@ core.Expando._keyCount = 0;
 core.Function = class Function extends core.Object {
   static apply(f, positionalArguments, namedArguments) {
     if (namedArguments === void 0) namedArguments = null;
+    let t = positionalArguments;
+    t == null ? positionalArguments = [] : t;
+    if (namedArguments != null && dart.test(namedArguments[dartx.isNotEmpty])) {
+      let map = {};
+      namedArguments[dartx.forEach](dart.fn((symbol, arg) => {
+        map[core._symbolToString(symbol)] = arg;
+      }, SymbolAnddynamicToNull()));
+      positionalArguments = core.List.from(positionalArguments);
+      positionalArguments[dartx.add](map);
+    }
     return dart.dcall.apply(null, [f].concat(positionalArguments));
   }
   static _toMangledNames(namedArguments) {