From b78fc9b4d0080babaa04eff9f56ce78cfaccf55b Mon Sep 17 00:00:00 2001
From: Henry Zhu <hi@henryzoo.com>
Date: Sun, 12 Mar 2017 21:40:38 -0400
Subject: [PATCH] Keep parentheses for logical expression when in await
 expression (fix #5428) (#5433) (#5453)

---
 packages/babel-generator/src/node/parentheses.js               | 3 ++-
 .../test/fixtures/parentheses/await-expression/actual.js       | 1 +
 .../test/fixtures/parentheses/await-expression/expected.js     | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/babel-generator/src/node/parentheses.js b/packages/babel-generator/src/node/parentheses.js
index 5cf16c2324..f2ba48d320 100644
--- a/packages/babel-generator/src/node/parentheses.js
+++ b/packages/babel-generator/src/node/parentheses.js
@@ -50,7 +50,8 @@ export function Binary(node: Object, parent: Object): boolean {
   if (
     ((t.isCallExpression(parent) || t.isNewExpression(parent)) && parent.callee === node) ||
     t.isUnaryLike(parent) ||
-    (t.isMemberExpression(parent) && parent.object === node)
+    (t.isMemberExpression(parent) && parent.object === node) ||
+    t.isAwaitExpression(parent)
   ) {
     return true;
   }
diff --git a/packages/babel-generator/test/fixtures/parentheses/await-expression/actual.js b/packages/babel-generator/test/fixtures/parentheses/await-expression/actual.js
index d4bdc6b74a..8289263007 100644
--- a/packages/babel-generator/test/fixtures/parentheses/await-expression/actual.js
+++ b/packages/babel-generator/test/fixtures/parentheses/await-expression/actual.js
@@ -5,6 +5,7 @@ async function asdf() {
   true ? (await 1) : (await 2);
   await (1 ? 2 : 3);
   await (await 1);
+  await (a || b);
 }
 
 async function a(b) {
diff --git a/packages/babel-generator/test/fixtures/parentheses/await-expression/expected.js b/packages/babel-generator/test/fixtures/parentheses/await-expression/expected.js
index dc2cb361e0..271a15791e 100644
--- a/packages/babel-generator/test/fixtures/parentheses/await-expression/expected.js
+++ b/packages/babel-generator/test/fixtures/parentheses/await-expression/expected.js
@@ -5,6 +5,7 @@ async function asdf() {
   true ? await 1 : await 2;
   await (1 ? 2 : 3);
   await await 1;
+  await (a || b);
 }
 
 async function a(b) {