Fixed type error in MapEntry and added keyToStringConfig to display the toString() of a key in a Ma…

lib/runtime/dart_sdk.js

Index: lib/runtime/dart_sdk.js
diff --git a/lib/runtime/dart_sdk.js b/lib/runtime/dart_sdk.js
index 9fb6c1066b9bbebbf47ed619d628399d05219627..f4bf931afc627f12b84ece0531602c7d4becbfdd 100644
--- a/lib/runtime/dart_sdk.js
+++ b/lib/runtime/dart_sdk.js
@@ -2251,7 +2251,8 @@ dart_library.library('dart_sdk', null, /* Imports */[
   dart._typeFormalCount = Symbol("_typeFormalCount");
   dart.isSubtype = dart._subtypeMemo((t1, t2) => t1 === t2 || dart._isSubtype(t1, t2, true));
   dart.hasOwnProperty = Object.prototype.hasOwnProperty;
-  _debugger.skipDartConfig = dart.const(new core.Object());
+  _debugger.skipDartConfig = "skipDartConfig";
+  _debugger.keyToStringConfig = "keyToStringConfig";
   _debugger.maxIterableChildrenToDisplay = 50;
   dart.defineLazy(_debugger, {
     get _devtoolsFormatter() {
@@ -2335,9 +2336,11 @@ dart_library.library('dart_sdk', null, /* Imports */[
       let name = opts && 'name' in opts ? opts.name : null;
       let value = opts && 'value' in opts ? opts.value : null;
       let skipDart = opts && 'skipDart' in opts ? opts.skipDart : null;
+      let keyToString = opts && 'keyToString' in opts ? opts.keyToString : null;
       this.name = name;
       this.value = value;
       this.skipDart = skipDart == true;
+      this.keyToString = keyToString == true;
     }
     ['=='](other) {
       return _debugger.NameValuePair.is(other) && other.name == this.name;
@@ -2347,7 +2350,7 @@ dart_library.library('dart_sdk', null, /* Imports */[
     }
   };
   dart.setSignature(_debugger.NameValuePair, {
-    constructors: () => ({new: dart.definiteFunctionType(_debugger.NameValuePair, [], {name: core.String, value: core.Object, skipDart: core.bool})})
+    constructors: () => ({new: dart.definiteFunctionType(_debugger.NameValuePair, [], {name: core.String, value: core.Object, skipDart: core.bool, keyToString: core.bool})})
   });
   _debugger.MapEntry = class MapEntry extends core.Object {
     new(opts) {
@@ -2358,7 +2361,7 @@ dart_library.library('dart_sdk', null, /* Imports */[
     }
   };
   dart.setSignature(_debugger.MapEntry, {
-    constructors: () => ({new: dart.definiteFunctionType(_debugger.MapEntry, [], {key: core.String, value: core.Object})})
+    constructors: () => ({new: dart.definiteFunctionType(_debugger.MapEntry, [], {key: core.Object, value: core.Object})})
   });
   _debugger.ClassMetadata = class ClassMetadata extends core.Object {
     new(object) {
@@ -2450,6 +2453,9 @@ dart_library.library('dart_sdk', null, /* Imports */[
       }
       let c = this[_simpleFormatter].preview(object);
       if (c == null) return null;
+      if (core.identical(config, _debugger.keyToStringConfig)) {
+        c = dart.toString(object);
+      }
       let element = new _debugger.JsonMLElement('span');
       element.setStyle('background-color: #d9edf7');
       element.createTextChild(c);
@@ -2474,6 +2480,9 @@ dart_library.library('dart_sdk', null, /* Imports */[
           if (dart.test(child.skipDart)) {
             objectTag.addAttribute('config', _debugger.skipDartConfig);
           }
+          if (dart.test(child.keyToString)) {
+            objectTag.addAttribute('config', _debugger.keyToStringConfig);
+          }
           if (!dart.test(this[_simpleFormatter].hasChildren(child.value))) {
             li.setStyle("padding-left: 13px;");
           }
@@ -2676,7 +2685,7 @@ dart_library.library('dart_sdk', null, /* Imports */[
       let map = core.Map._check(object);
       let entries = LinkedHashSetOfNameValuePair().new();
       map[dartx.forEach](dart.fn((key, value) => {
-        let entryWrapper = new _debugger.MapEntry({key: core.String._check(key), value: value});
+        let entryWrapper = new _debugger.MapEntry({key: key, value: value});
         entries.add(new _debugger.NameValuePair({name: dart.toString(entries.length), value: entryWrapper}));
       }, dynamicAnddynamicTovoid()));
       this.addMetadataChildren(object, entries);
@@ -2773,7 +2782,7 @@ dart_library.library('dart_sdk', null, /* Imports */[
       return true;
     }
     children(object) {
-      return JSArrayOfNameValuePair().of([new _debugger.NameValuePair({name: 'key', value: dart.dload(object, 'key')}), new _debugger.NameValuePair({name: 'value', value: dart.dload(object, 'value')})]);
+      return JSArrayOfNameValuePair().of([new _debugger.NameValuePair({name: 'key', value: dart.dload(object, 'key'), keyToString: true}), new _debugger.NameValuePair({name: 'value', value: dart.dload(object, 'value')})]);
     }
   };
   _debugger.MapEntryFormatter[dart.implements] = () => [_debugger.Formatter];