From 2d36d8b6165b3b2536b06a9bbfcc7ea2509cf0dd Mon Sep 17 00:00:00 2001
From: Amjad Masad <amjad.masad@gmail.com>
Date: Tue, 27 Oct 2015 17:24:45 -0700
Subject: [PATCH] If binary expression precedence is equal no need for parens.
 Fixes #2602

---
 packages/babel/src/generation/node/parentheses.js             | 4 ----
 .../test/fixtures/generation/parentheses/expression/actual.js | 1 +
 .../fixtures/generation/parentheses/expression/expected.js    | 1 +
 3 files changed, 2 insertions(+), 4 deletions(-)
 create mode 100644 packages/babel/test/fixtures/generation/parentheses/expression/actual.js
 create mode 100644 packages/babel/test/fixtures/generation/parentheses/expression/expected.js

diff --git a/packages/babel/src/generation/node/parentheses.js b/packages/babel/src/generation/node/parentheses.js
index 44201e11fb..012184f020 100644
--- a/packages/babel/src/generation/node/parentheses.js
+++ b/packages/babel/src/generation/node/parentheses.js
@@ -97,10 +97,6 @@ export function Binary(node, parent) {
     if (parentPos > nodePos) {
       return true;
     }
-
-    if (parentPos === nodePos && parent.right === node) {
-      return true;
-    }
   }
 }
 
diff --git a/packages/babel/test/fixtures/generation/parentheses/expression/actual.js b/packages/babel/test/fixtures/generation/parentheses/expression/actual.js
new file mode 100644
index 0000000000..8a2b727e0e
--- /dev/null
+++ b/packages/babel/test/fixtures/generation/parentheses/expression/actual.js
@@ -0,0 +1 @@
+a && (a.b && a.b.c());
diff --git a/packages/babel/test/fixtures/generation/parentheses/expression/expected.js b/packages/babel/test/fixtures/generation/parentheses/expression/expected.js
new file mode 100644
index 0000000000..56580c5211
--- /dev/null
+++ b/packages/babel/test/fixtures/generation/parentheses/expression/expected.js
@@ -0,0 +1 @@
+a && a.b && a.b.c();