update to RestElement - @RReverser

lib/6to5/generation/generators/types.js

@@ -6,6 +6,7 @@ exports.Identifier = function (node) {
   this.push(node.name);
 };
 
+exports.RestElement =
 exports.SpreadElement =
 exports.SpreadProperty = function (node, print) {
   this.push("...");

lib/6to5/patch.js

@@ -31,6 +31,11 @@ def("ImportBatchSpecifier")
   .build("name")
   .field("name", def("Identifier"));
 
+def("RestElement")
+  .bases("Node")
+  .build("argument")
+  .field("argument", def("Expression"));
+
 // Abstract references
 def("VirtualPropertyExpression")
   .bases("Expression")

lib/6to5/transformation/transformers/es6/destructuring.js

@@ -103,15 +103,15 @@ var pushArrayPattern = function (opts, nodes, pattern, parentId) {
 
   var i;
 
-  var hasSpreadElement = false;
+  var hasRest = false;
   for (i = 0; i < pattern.elements.length; i++) {
-    if (t.isSpreadElement(pattern.elements[i])) {
-      hasSpreadElement = true;
+    if (t.isRestElement(pattern.elements[i])) {
+      hasRest = true;
       break;
     }
   }
 
-  var toArray = opts.file.toArray(parentId, !hasSpreadElement && pattern.elements.length);
+  var toArray = opts.file.toArray(parentId, !hasRest && pattern.elements.length);
 
   var _parentId = opts.scope.generateUidBasedOnNode(parentId, opts.file);
   nodes.push(buildVariableDeclar(opts, _parentId, toArray));
@@ -125,7 +125,7 @@ var pushArrayPattern = function (opts, nodes, pattern, parentId) {
 
     var newPatternId;
 
-    if (t.isSpreadElement(elem)) {
+    if (t.isRestElement(elem)) {
       newPatternId = opts.file.toArray(parentId);
 
       if (i > 0) {

lib/6to5/types/index.js

@@ -488,6 +488,7 @@ t.getIds.nodes = {
   ClassDeclaration: ["id"],
   MemeberExpression: ["object"],
   SpreadElement: ["argument"],
+  RestElement: ["argument"],
   Property: ["value"],
   ComprehensionBlock: ["left"],
   AssignmentPattern: ["left"]

lib/6to5/types/visitor-keys.json

@@ -48,6 +48,7 @@
   "PrivateDeclaration":        ["declarations"],
   "Program":                   ["body"],
   "Property":                  ["key", "value"],
+  "RestElement":               ["argument"],
   "ReturnStatement":           ["argument"],
   "SequenceExpression":        ["expressions"],
   "SpreadElement":             ["argument"],