From 940daa4f5b5a9b61ccf757cd9cc038f707dbc4e6 Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Wed, 30 Sep 2015 16:45:20 -0400
Subject: [PATCH] handle parenthesised default exports (#136)

---
 src/Module.js                                         | 3 ++-
 test/function/parenthesised-default-export/_config.js | 3 +++
 test/function/parenthesised-default-export/main.js    | 1 +
 3 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 test/function/parenthesised-default-export/_config.js
 create mode 100644 test/function/parenthesised-default-export/main.js

diff --git a/src/Module.js b/src/Module.js
index 4be76d9..1b2970e 100644
--- a/src/Module.js
+++ b/src/Module.js
@@ -495,7 +495,8 @@ export default class Module {
 				ast = parse( this.source, {
 					ecmaVersion: 6,
 					sourceType: 'module',
-					onComment: ( block, text, start, end ) => this.comments.push({ block, text, start, end })
+					onComment: ( block, text, start, end ) => this.comments.push({ block, text, start, end }),
+					preserveParens: true
 				});
 			} catch ( err ) {
 				err.code = 'PARSE_ERROR';
diff --git a/test/function/parenthesised-default-export/_config.js b/test/function/parenthesised-default-export/_config.js
new file mode 100644
index 0000000..65de328
--- /dev/null
+++ b/test/function/parenthesised-default-export/_config.js
@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'allows default exports to be enclosed in parentheses'
+};
diff --git a/test/function/parenthesised-default-export/main.js b/test/function/parenthesised-default-export/main.js
new file mode 100644
index 0000000..39430e6
--- /dev/null
+++ b/test/function/parenthesised-default-export/main.js
@@ -0,0 +1 @@
+export default ( 42 );