From d34480b42ba3930844d4a6b8f6212db3d8e2e88d Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Fri, 3 Apr 2015 22:38:08 +1100
Subject: [PATCH] add support for arrays to util.list - fixes #["foo", "bar"]

---
 src/babel/util.js | 8 +++++++-
 test/core/util.js | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/babel/util.js b/src/babel/util.js
index 45bbf2ce0d..373bfbb75c 100644
--- a/src/babel/util.js
+++ b/src/babel/util.js
@@ -55,7 +55,13 @@ export function resolveRelative(loc: string) {
 }
 
 export function list(val: string): Array<string> {
-  return val ? val.split(",") : [];
+  if (!val) {
+    return [];
+  } else if (Array.isArray(val)) {
+    return val;
+  } else {
+    return val.split(",");
+  }
 }
 
 export function regexify(val: any): RegExp {
diff --git a/test/core/util.js b/test/core/util.js
index 9f30ce1058..a26cc7f058 100644
--- a/test/core/util.js
+++ b/test/core/util.js
@@ -57,6 +57,7 @@ suite("util", function () {
     assert.deepEqual(util.list(""), []);
     assert.deepEqual(util.list("foo"), ["foo"]);
     assert.deepEqual(util.list("foo,bar"), ["foo", "bar"]);
+    assert.deepEqual(util.list(["foo", "bar"]), ["foo", "bar"]);
   });
 
   test("arrayify", function () {