fix no RHS in class properties causing undefined to be used instead of a noop - fixes #1396

test/core/fixtures/transformation/es7.class-properties/instance-undefined/expected.js

@@ -2,5 +2,4 @@
 
 var Foo = function Foo() {
   babelHelpers.classCallCheck(this, Foo);
-  this.bar = undefined;
-};
+};

test/core/fixtures/transformation/es7.class-properties/static-undefined/exec.js

@@ -2,5 +2,5 @@ class Foo {
   static num;
 }
 
-assert.equal("num" in Foo, true);
+assert.equal("num" in Foo, false);
 assert.equal(Foo.num, undefined);

test/core/fixtures/transformation/es7.class-properties/static-undefined/expected.js

@@ -1,14 +1,5 @@
 "use strict";
 
-var Foo = (function () {
-  function Foo() {
-    babelHelpers.classCallCheck(this, Foo);
-  }
-
-  babelHelpers.createClass(Foo, null, [{
-    key: "bar",
-    value: undefined,
-    enumerable: true
-  }]);
-  return Foo;
-})();
+var Foo = function Foo() {
+  babelHelpers.classCallCheck(this, Foo);
+};

test/core/fixtures/transformation/es7.decorators/class-no-init-instance-props/expected.js

@@ -11,8 +11,8 @@ var Foo = (function () {
   babelHelpers.createDecoratedClass(Foo, [{
     key: "foo",
     decorators: [bar],
-    initializer: function () {},
+    initializer: null,
     enumerable: true
   }], null, _instanceInitializers);
   return Foo;
-})();
+})();

test/core/fixtures/transformation/es7.decorators/class-no-init-static-props/expected.js

@@ -10,7 +10,7 @@ var Foo = (function () {
   babelHelpers.createDecoratedClass(Foo, null, [{
     key: "foo",
     decorators: [bar],
-    initializer: function () {},
+    initializer: null,
     enumerable: true
   }], null, _staticInitializers);
   babelHelpers.defineDecoratedPropertyDescriptor(Foo, "foo", _staticInitializers);