From fb4125a816f6cc55f608be111939dc7ceccee118 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <jlhwung@gmail.com>
Date: Mon, 23 Dec 2019 08:11:29 -0500
Subject: [PATCH] fix: renameVisitor should skip when a pattern is a scope

---
 packages/babel-traverse/src/scope/lib/renamer.js      |  3 ++-
 .../test/fixtures/rename/parameter-default-1/input.js |  7 +++++++
 .../fixtures/rename/parameter-default-1/options.json  |  3 +++
 .../fixtures/rename/parameter-default-1/output.js     |  6 ++++++
 .../fixtures/rename/parameter-default-1/plugin.js     |  9 +++++++++
 .../fixtures/rename/parameter-default-10/input.js     |  5 +++++
 .../fixtures/rename/parameter-default-10/options.json |  3 +++
 .../fixtures/rename/parameter-default-10/output.js    | 11 +++++++++++
 .../fixtures/rename/parameter-default-10/plugin.js    |  9 +++++++++
 .../test/fixtures/rename/parameter-default-2/input.js |  5 +++++
 .../fixtures/rename/parameter-default-2/options.json  |  3 +++
 .../fixtures/rename/parameter-default-2/output.js     |  5 +++++
 .../fixtures/rename/parameter-default-2/plugin.js     |  9 +++++++++
 .../test/fixtures/rename/parameter-default-3/input.js |  6 ++++++
 .../fixtures/rename/parameter-default-3/options.json  |  3 +++
 .../fixtures/rename/parameter-default-3/output.js     |  6 ++++++
 .../fixtures/rename/parameter-default-3/plugin.js     |  9 +++++++++
 .../test/fixtures/rename/parameter-default-4/input.js |  8 ++++++++
 .../fixtures/rename/parameter-default-4/options.json  |  3 +++
 .../fixtures/rename/parameter-default-4/output.js     |  8 ++++++++
 .../fixtures/rename/parameter-default-4/plugin.js     |  9 +++++++++
 .../test/fixtures/rename/parameter-default-5/input.js |  8 ++++++++
 .../fixtures/rename/parameter-default-5/options.json  |  3 +++
 .../fixtures/rename/parameter-default-5/output.js     |  8 ++++++++
 .../fixtures/rename/parameter-default-5/plugin.js     |  9 +++++++++
 .../test/fixtures/rename/parameter-default-6/input.js |  5 +++++
 .../fixtures/rename/parameter-default-6/options.json  |  3 +++
 .../fixtures/rename/parameter-default-6/output.js     |  5 +++++
 .../fixtures/rename/parameter-default-6/plugin.js     |  9 +++++++++
 .../test/fixtures/rename/parameter-default-7/input.js |  5 +++++
 .../fixtures/rename/parameter-default-7/options.json  |  3 +++
 .../fixtures/rename/parameter-default-7/output.js     |  5 +++++
 .../fixtures/rename/parameter-default-7/plugin.js     |  9 +++++++++
 .../test/fixtures/rename/parameter-default-8/input.js |  5 +++++
 .../fixtures/rename/parameter-default-8/options.json  |  3 +++
 .../fixtures/rename/parameter-default-8/output.js     |  5 +++++
 .../fixtures/rename/parameter-default-8/plugin.js     |  9 +++++++++
 .../test/fixtures/rename/parameter-default-9/input.js |  5 +++++
 .../fixtures/rename/parameter-default-9/options.json  |  3 +++
 .../fixtures/rename/parameter-default-9/output.js     |  5 +++++
 .../fixtures/rename/parameter-default-9/plugin.js     |  9 +++++++++
 41 files changed, 245 insertions(+), 1 deletion(-)
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-1/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-1/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-1/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-1/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-10/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-10/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-10/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-10/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-2/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-2/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-2/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-2/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-3/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-3/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-3/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-3/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-4/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-4/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-4/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-4/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-5/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-5/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-5/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-5/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-6/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-6/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-6/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-6/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-7/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-7/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-7/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-7/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-8/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-8/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-8/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-8/plugin.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-9/input.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-9/options.json
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-9/output.js
 create mode 100644 packages/babel-traverse/test/fixtures/rename/parameter-default-9/plugin.js

diff --git a/packages/babel-traverse/src/scope/lib/renamer.js b/packages/babel-traverse/src/scope/lib/renamer.js
index cdfd90819681..98c16a2e1863 100644
--- a/packages/babel-traverse/src/scope/lib/renamer.js
+++ b/packages/babel-traverse/src/scope/lib/renamer.js
@@ -9,8 +9,9 @@ const renameVisitor = {
     }
   },
 
-  Scope(path, state) {
+  "Pattern|Scope"(path, state) {
     if (
+      path.isScope() &&
       !path.scope.bindingIdentifierEquals(
         state.oldName,
         state.binding.identifier,
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-1/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-1/input.js
new file mode 100644
index 000000000000..c40f808feb63
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-1/input.js
@@ -0,0 +1,7 @@
+let a = "outside";
+
+function f(g = () => a) {
+  let a = "inside";
+  return g();
+}
+
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-1/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-1/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-1/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-1/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-1/output.js
new file mode 100644
index 000000000000..32d258e83c15
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-1/output.js
@@ -0,0 +1,6 @@
+let a = "outside";
+
+function f(g = () => a) {
+  let z = "inside";
+  return g();
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-1/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-1/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-1/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-10/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-10/input.js
new file mode 100644
index 000000000000..60898eb184b6
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-10/input.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function r({ a: b }, { [a]: { c } = a }) {
+  g(a);
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-10/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-10/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-10/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-10/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-10/output.js
new file mode 100644
index 000000000000..91af3aed8340
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-10/output.js
@@ -0,0 +1,11 @@
+let z = "outside";
+
+function r({
+  a: b
+}, {
+  [z]: {
+    c
+  } = z
+}) {
+  g(z);
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-10/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-10/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-10/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-2/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-2/input.js
new file mode 100644
index 000000000000..f80651d80616
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-2/input.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function h(a, g = () => a) {
+  return g();
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-2/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-2/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-2/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-2/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-2/output.js
new file mode 100644
index 000000000000..dd64606a5b19
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-2/output.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function h(z, g = () => z) {
+  return g();
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-2/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-2/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-2/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-3/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-3/input.js
new file mode 100644
index 000000000000..a6a4bdd4c336
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-3/input.js
@@ -0,0 +1,6 @@
+let a = "outside";
+
+function j(g = a) {
+  let a = "inside";
+  return g;
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-3/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-3/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-3/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-3/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-3/output.js
new file mode 100644
index 000000000000..a5cb0dab0cc3
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-3/output.js
@@ -0,0 +1,6 @@
+let a = "outside";
+
+function j(g = a) {
+  let z = "inside";
+  return g;
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-3/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-3/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-3/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-4/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-4/input.js
new file mode 100644
index 000000000000..0f7ddb008ef1
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-4/input.js
@@ -0,0 +1,8 @@
+let a = "outside";
+
+function k([{
+  g = a
+}]) {
+  let a = "inside";
+  return g;
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-4/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-4/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-4/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-4/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-4/output.js
new file mode 100644
index 000000000000..65ab1aa82f5f
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-4/output.js
@@ -0,0 +1,8 @@
+let a = "outside";
+
+function k([{
+  g = a
+}]) {
+  let z = "inside";
+  return g;
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-4/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-4/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-4/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-5/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-5/input.js
new file mode 100644
index 000000000000..9586b93c5fcb
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-5/input.js
@@ -0,0 +1,8 @@
+let a = "outside";
+
+function f([{
+  [a]: g
+}]) {
+  let a = "inside";
+  return g;
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-5/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-5/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-5/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-5/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-5/output.js
new file mode 100644
index 000000000000..f703a83d601b
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-5/output.js
@@ -0,0 +1,8 @@
+let a = "outside";
+
+function f([{
+  [a]: g
+}]) {
+  let z = "inside";
+  return g;
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-5/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-5/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-5/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-6/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-6/input.js
new file mode 100644
index 000000000000..d33571e9a053
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-6/input.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function n(g = (a = a) => {}) {
+  let a = "inside";
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-6/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-6/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-6/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-6/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-6/output.js
new file mode 100644
index 000000000000..917b0bb1c749
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-6/output.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function n(g = (a = a) => {}) {
+  let z = "inside";
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-6/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-6/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-6/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-7/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-7/input.js
new file mode 100644
index 000000000000..273324bf46df
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-7/input.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function n(a, g = (a = a) => {}) {
+  a = "inside";
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-7/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-7/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-7/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-7/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-7/output.js
new file mode 100644
index 000000000000..5d6b37398318
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-7/output.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function n(z, g = (a = a) => {}) {
+  z = "inside";
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-7/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-7/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-7/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-8/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-8/input.js
new file mode 100644
index 000000000000..3349776fcb77
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-8/input.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function q(a, g = (b = a) => b) {
+  g(a);
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-8/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-8/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-8/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-8/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-8/output.js
new file mode 100644
index 000000000000..3894a8a76152
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-8/output.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function q(z, g = (b = z) => b) {
+  g(z);
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-8/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-8/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-8/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-9/input.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-9/input.js
new file mode 100644
index 000000000000..4a57005f1db1
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-9/input.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function r(a, g = (a, b = a) => a) {
+  g(a);
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-9/options.json b/packages/babel-traverse/test/fixtures/rename/parameter-default-9/options.json
new file mode 100644
index 000000000000..14af0e5feac8
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-9/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["./plugin"]
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-9/output.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-9/output.js
new file mode 100644
index 000000000000..886bfcd11375
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-9/output.js
@@ -0,0 +1,5 @@
+let a = "outside";
+
+function r(z, g = (a, b = a) => a) {
+  g(z);
+}
diff --git a/packages/babel-traverse/test/fixtures/rename/parameter-default-9/plugin.js b/packages/babel-traverse/test/fixtures/rename/parameter-default-9/plugin.js
new file mode 100644
index 000000000000..830481588123
--- /dev/null
+++ b/packages/babel-traverse/test/fixtures/rename/parameter-default-9/plugin.js
@@ -0,0 +1,9 @@
+module.exports = function() {
+  return {
+    visitor: {
+      FunctionDeclaration(path) {
+        path.scope.rename("a", "z");
+      }
+    }
+  };
+};