Added a message & a check for numerics in the parser

src/compiler/diagnosticInformationMap.generated.ts

@@ -48,6 +48,7 @@ module ts {
         Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher: { code: 1056, category: DiagnosticCategory.Error, key: "Accessors are only available when targeting ECMAScript 5 and higher." },
         Enum_member_must_have_initializer: { code: 1061, category: DiagnosticCategory.Error, key: "Enum member must have initializer." },
         An_export_assignment_cannot_be_used_in_an_internal_module: { code: 1063, category: DiagnosticCategory.Error, key: "An export assignment cannot be used in an internal module." },
+        An_enum_member_cannot_have_a_numeric_name: { code: 1065, category: DiagnosticCategory.Error, key: "An enum member cannot have a numeric name." },
         Ambient_enum_elements_can_only_have_integer_literal_initializers: { code: 1066, category: DiagnosticCategory.Error, key: "Ambient enum elements can only have integer literal initializers." },
         Unexpected_token_A_constructor_method_accessor_or_property_was_expected: { code: 1068, category: DiagnosticCategory.Error, key: "Unexpected token. A constructor, method, accessor, or property was expected." },
         A_declare_modifier_cannot_be_used_with_an_import_declaration: { code: 1079, category: DiagnosticCategory.Error, key: "A 'declare' modifier cannot be used with an import declaration." },

src/compiler/diagnosticMessages.json

@@ -11,7 +11,7 @@
         "category": "Error",
         "code": 1005
     },
-	"A file cannot have a reference to itself.": {
+    "A file cannot have a reference to itself.": {
         "category": "Error",
         "code": 1006
     },
@@ -183,11 +183,15 @@
         "category": "Error",
         "code": 1063
     },
+    "An enum member cannot have a numeric name.": {
+        "category": "Error",
+        "code":  1065
+    },
     "Ambient enum elements can only have integer literal initializers.": {
         "category": "Error",
         "code": 1066
     },
-    "Unexpected token. A constructor, method, accessor, or property was expected." : {
+    "Unexpected token. A constructor, method, accessor, or property was expected.": {
         "category": "Error",
         "code": 1068
     },
@@ -444,9 +448,9 @@
         "code": 1149
     },
     "'new T[]' cannot be used to create an array. Use 'new Array<T>()' instead.": {
-       "category": "Error",
-       "code": 1150
-   },
+        "category": "Error",
+        "code": 1150
+    },
 
     "Duplicate identifier '{0}'.": {
         "category": "Error",
@@ -556,7 +560,7 @@
         "category": "Error",
         "code": 2326
     },
-	"Property '{0}' is optional in type '{1}' but required in type '{2}'.": {
+    "Property '{0}' is optional in type '{1}' but required in type '{2}'.": {
         "category": "Error",
         "code": 2327
     },

src/compiler/parser.ts

@@ -3673,6 +3673,11 @@ module ts {
                 var node = <EnumMember>createNode(SyntaxKind.EnumMember);
                 var errorCountBeforeEnumMember = file.syntacticErrors.length;
                 node.name = parsePropertyName();
+                
+                if(isIntegerLiteral(node.name)) {
+                    grammarErrorOnNode(node.name, Diagnostics.An_enum_member_cannot_have_a_numeric_name);
+                }
+
                 node.initializer = parseInitializer(/*inParameter*/ false);
 
                 if (inAmbientContext) {