add initProps to single call expression in computed property names - fixes #378

test/fixtures/transformation/es6-computed-property-names/two/actual.js

@@ -0,0 +1,4 @@
+var obj = {
+  first: "first",
+  ["second"]: "second",
+};

test/fixtures/transformation/es6-computed-property-names/two/expected.js

@@ -0,0 +1,13 @@
+"use strict";
+
+var _defineProperty = function (obj, key, value) {
+  return Object.defineProperty(obj, key, {
+    value: value,
+    enumerable: true,
+    configurable: true,
+    writable: true
+  });
+};
+
+var obj = _defineProperty({
+  first: "first" }, "second", "second");