No longer emit trailing comma on object literals.

DanielRosenwasser · DanielRosenwasser · commit fe4c738b01da · 2014-07-28T11:37:36.000-07:00
This was done because trailing commas in object literals are not accepted by ES3. Fixes microsoft#271.
diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
@@ -2107,7 +2107,7 @@ module ts {
             var node = <ObjectLiteral>createNode(SyntaxKind.ObjectLiteral);
             parseExpected(SyntaxKind.OpenBraceToken);
             if (scanner.hasPrecedingLineBreak()) node.flags |= NodeFlags.MultiLine;
-            node.properties = parseDelimitedList(ParsingContext.ObjectLiteralMembers, parseObjectLiteralMember, TrailingCommaBehavior.Preserve);
+            node.properties = parseDelimitedList(ParsingContext.ObjectLiteralMembers, parseObjectLiteralMember, TrailingCommaBehavior.Allow);
             parseExpected(SyntaxKind.CloseBraceToken);
 
             var seen: Map<SymbolFlags> = {};
diff --git a/tests/baselines/reference/assignmentCompatBug2.js b/tests/baselines/reference/assignmentCompatBug2.js
@@ -50,21 +50,21 @@ b3 = {
     g: function (s) {
         return 0;
     },
-    m: 0,
+    m: 0
 };
 b3 = {
     f: function (n) {
         return 0;
     },
     g: function (s) {
         return 0;
-    },
+    }
 };
 b3 = {
     f: function (n) {
         return 0;
     },
-    m: 0,
+    m: 0
 };
 b3 = {
     f: function (n) {
@@ -77,7 +77,7 @@ b3 = {
     n: 0,
     k: function (a) {
         return null;
-    },
+    }
 };
 b3 = {
     f: function (n) {
@@ -89,5 +89,5 @@ b3 = {
     n: 0,
     k: function (a) {
         return null;
-    },
+    }
 };
diff --git a/tests/baselines/reference/commentsOnObjectLiteral2.js b/tests/baselines/reference/commentsOnObjectLiteral2.js
@@ -16,5 +16,5 @@ var Person = makeClass(
 var Person = makeClass({
     initialize: function (name) {
         this.name = name;
-    },
+    }
 });
diff --git a/tests/baselines/reference/convertKeywordsYes.js b/tests/baselines/reference/convertKeywordsYes.js
@@ -380,7 +380,7 @@ var bigObject = {
     var: 0,
     void: 0,
     while: 0,
-    with: 0,
+    with: 0
 };
 var bigClass = (function () {
     function bigClass() {
diff --git a/tests/baselines/reference/declFileModuleAssignmentInObjectLiteralProperty.js b/tests/baselines/reference/declFileModuleAssignmentInObjectLiteralProperty.js
@@ -21,7 +21,7 @@ var m1;
 })(m1 || (m1 = {}));
 var d = {
     m1: { m: m1 },
-    m2: { c: m1.c },
+    m2: { c: m1.c }
 };
 
 
diff --git a/tests/baselines/reference/objectLitIndexerContextualType.js b/tests/baselines/reference/objectLitIndexerContextualType.js
@@ -26,14 +26,14 @@ y = {
 var x;
 var y;
 x = {
-    s: function (t) { return t * t; },
+    s: function (t) { return t * t; }
 };
 x = {
-    0: function (t) { return t * t; },
+    0: function (t) { return t * t; }
 };
 y = {
-    s: function (t) { return t * t; },
+    s: function (t) { return t * t; }
 };
 y = {
-    0: function (t) { return t * t; },
+    0: function (t) { return t * t; }
 };
diff --git a/tests/baselines/reference/objectLiteralParameterResolution.js b/tests/baselines/reference/objectLiteralParameterResolution.js
@@ -25,5 +25,5 @@ var s = $.extend({
     dataType: "json",
     converters: { "text json": "" },
     traditional: true,
-    timeout: 12,
+    timeout: 12
 }, "");
diff --git a/tests/baselines/reference/objectTypeWithStringNamedPropertyOfIllegalCharacters.js b/tests/baselines/reference/objectTypeWithStringNamedPropertyOfIllegalCharacters.js
@@ -77,7 +77,7 @@ var r4 = a["~!@#$%^&*()_+{}|:'<>?\/.,`"];
 var b = {
     "   ": 1,
     "a   b": "",
-    "~!@#$%^&*()_+{}|:'<>?\/.,`": 1,
+    "~!@#$%^&*()_+{}|:'<>?\/.,`": 1
 };
 var r = b["   "];
 var r2 = b["    "];
diff --git a/tests/baselines/reference/stringLiteralTypesInImplementationSignatures2.js b/tests/baselines/reference/stringLiteralTypesInImplementationSignatures2.js
@@ -44,5 +44,5 @@ var b = {
     foo: function (x) {
     },
     foo: function (x) {
-    },
+    }
 };
diff --git a/tests/baselines/reference/thisInPropertyBoundDeclarations.js b/tests/baselines/reference/thisInPropertyBoundDeclarations.js
@@ -101,13 +101,13 @@ var A = (function () {
         this.prop4 = {
             a: function () {
                 return this;
-            },
+            }
         };
         this.prop5 = function () {
             return {
                 a: function () {
                     return this;
-                },
+                }
             };
         };
     }
