From 4d2f224919325fb47717ee63690cf9929956a168 Mon Sep 17 00:00:00 2001
From: Ika <ikatyang@gmail.com>
Date: Wed, 8 Aug 2018 23:48:12 +0800
Subject: [PATCH] fix(javascript): add parens for unary in bind (#4950)

* test: add tests

* fix(javascript): add parens for unary in bind
---
 src/language-js/needs-parens.js               |  1 +
 .../__snapshots__/jsfmt.spec.js.snap          | 22 +++++++++++++++++++
 tests/bind_expressions/unary.js               |  3 +++
 3 files changed, 26 insertions(+)
 create mode 100644 tests/bind_expressions/unary.js

diff --git a/src/language-js/needs-parens.js b/src/language-js/needs-parens.js
index a3a467a66cb4..4e46c0a1503b 100644
--- a/src/language-js/needs-parens.js
+++ b/src/language-js/needs-parens.js
@@ -168,6 +168,7 @@ function needsParens(path, options) {
             (node.operator === "+" || node.operator === "-")
           );
 
+        case "BindExpression":
         case "MemberExpression":
           return name === "object" && parent.object === node;
 
diff --git a/tests/bind_expressions/__snapshots__/jsfmt.spec.js.snap b/tests/bind_expressions/__snapshots__/jsfmt.spec.js.snap
index 345aa99c6310..e38133cd9031 100644
--- a/tests/bind_expressions/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/bind_expressions/__snapshots__/jsfmt.spec.js.snap
@@ -215,3 +215,25 @@ class X {
 }
 
 `;
+
+exports[`unary.js - babylon-verify 1`] = `
+(void 0)::func();
+
+(+0)::is(-0);
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+(void 0)::func();
+
+(+0)::is(-0);
+
+`;
+
+exports[`unary.js - babylon-verify 2`] = `
+(void 0)::func();
+
+(+0)::is(-0);
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+;(void 0)::func()
+
+;(+0)::is(-0)
+
+`;
diff --git a/tests/bind_expressions/unary.js b/tests/bind_expressions/unary.js
new file mode 100644
index 000000000000..0d6244275b2b
--- /dev/null
+++ b/tests/bind_expressions/unary.js
@@ -0,0 +1,3 @@
+(void 0)::func();
+
+(+0)::is(-0);