register named method id as a reference to avoid collisions - fixes #1664

src/babel/transformation/helpers/name-method.js

@@ -45,6 +45,7 @@ var wrap = function (state, method, id, scope) {
   }
 
   method.id = id;
+  scope.getProgramParent().references[id.name] = true;
 };
 
 var visit = function (node, name, scope) {

src/babel/transformation/modules/common.js

@@ -70,6 +70,7 @@ export default class CommonJSFormatter extends DefaultFormatter {
           t.variableDeclarator(variableName, ref)
         ]));
       } else {
+        console.log(variableName.name);
         // import { foo } from "foo";
         this.internalRemap[variableName.name] = t.memberExpression(ref, specifier.imported);
       }

src/babel/traversal/scope/index.js

@@ -44,12 +44,6 @@ var collectorVisitor = {
     }
   },
 
-  Scopable(node, parent, scope) {
-    for (var name in scope.bindings) {
-      scope.getProgramParent().references[name] = true;
-    }
-  },
-
   ExportDeclaration: {
     exit(node, parent, scope) {
       var declar = node.declaration;
@@ -459,6 +453,7 @@ export default class Scope {
       return;
     }
 
+    var parent = this.getProgramParent();
     var ids = path.getBindingIdentifiers();
 
     for (var name in ids) {
@@ -470,6 +465,8 @@ export default class Scope {
         this.checkBlockScopedCollisions(local, kind, name, id);
       }
 
+      parent.references[name] = true;
+
       this.bindings[name] = new Binding({
         identifier: id,
         scope:      this,