From 3361b8165823a4315858329eb8f09bb5a9ff0e36 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Sun, 8 Feb 2015 01:27:00 +1100
Subject: [PATCH] expose parentPath

---
 lib/6to5/traversal/context.js |  3 ++-
 lib/6to5/traversal/index.js   |  4 ++--
 lib/6to5/traversal/path.js    | 23 ++++++++++++-----------
 3 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/lib/6to5/traversal/context.js b/lib/6to5/traversal/context.js
index e07b7362cd..4aa075db07 100644
--- a/lib/6to5/traversal/context.js
+++ b/lib/6to5/traversal/context.js
@@ -8,8 +8,9 @@ var TraversalPath = require("./path");
 var flatten       = require("lodash/array/flatten");
 var compact       = require("lodash/array/compact");
 
-function TraversalContext(scope, opts, state) {
+function TraversalContext(scope, opts, state, parentPath) {
   this.shouldFlatten = false;
+  this.parentPath    = parentPath;
 
   this.scope = scope;
   this.state = state;
diff --git a/lib/6to5/traversal/index.js b/lib/6to5/traversal/index.js
index 16d0934bfb..307868fa4e 100644
--- a/lib/6to5/traversal/index.js
+++ b/lib/6to5/traversal/index.js
@@ -29,11 +29,11 @@ function traverse(parent, opts, scope, state) {
   }
 }
 
-traverse.node = function (node, opts, scope, state) {
+traverse.node = function (node, opts, scope, state, parentPath) {
   var keys = t.VISITOR_KEYS[node.type];
   if (!keys) return;
 
-  var context = new TraversalContext(scope, opts, state);
+  var context = new TraversalContext(scope, opts, state, parentPath);
   for (var i = 0; i < keys.length; i++) {
     if (context.visit(node, keys[i])) {
       return;
diff --git a/lib/6to5/traversal/path.js b/lib/6to5/traversal/path.js
index 19cac99043..473474038f 100644
--- a/lib/6to5/traversal/path.js
+++ b/lib/6to5/traversal/path.js
@@ -14,16 +14,17 @@ function TraversalPath(context, parent, obj, key) {
   this.shouldSkip   = false;
   this.shouldStop   = false;
 
-  this.context = context;
-  this.state   = this.context.state;
-  this.opts    = this.context.opts;
+  this.parentPath = context.parentPath;
+  this.context    = context;
+  this.state      = this.context.state;
+  this.opts       = this.context.opts;
 
   this.key     = key;
   this.obj     = obj;
 
-  this.parent  = parent;
-  this.scope   = TraversalPath.getScope(this.getNode(), parent, context.scope);
-  this.state   = context.state;
+  this.parent = parent;
+  this.scope  = TraversalPath.getScope(this.getNode(), parent, context.scope);
+  this.state  = context.state;
 }
 
 TraversalPath.prototype.remove = function () {
@@ -70,7 +71,7 @@ TraversalPath.prototype.getNode = function () {
   return this.obj[this.key];
 };
 
-TraversalPath.prototype.replaceNode = function (replacement, scope) {
+TraversalPath.prototype.replaceNode = function (replacement) {
   var isArray = Array.isArray(replacement);
 
   // inherit comments from original node to the first replacement node
@@ -85,10 +86,10 @@ TraversalPath.prototype.replaceNode = function (replacement, scope) {
   if (file) {
     if (isArray) {
       for (var i = 0; i < replacement.length; i++) {
-        file.checkNode(replacement[i], scope);
+        file.checkNode(replacement[i], this.scope);
       }
     } else {
-      file.checkNode(replacement, scope);
+      file.checkNode(replacement, this.scope);
     }
   }
 
@@ -144,10 +145,10 @@ TraversalPath.prototype.visit = function () {
     // traverse over these replacement nodes we purposely don't call exitNode
     // as the original node has been destroyed
     for (var i = 0; i < node.length; i++) {
-      traverse.node(node[i], opts, this.scope, this.state);
+      traverse.node(node[i], opts, this.scope, this.state, this);
     }
   } else {
-    traverse.node(node, opts, this.scope, this.state);
+    traverse.node(node, opts, this.scope, this.state, this);
     this.call("exit");
   }