From 2824b3791e5e0454110fe2974d79c7220b116127 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rub=C3=A9n=20Norte?= <rubennorte@fb.com>
Date: Thu, 6 Dec 2018 12:02:12 +0000
Subject: [PATCH] Inherit properties in function from method in loose mode

---
 packages/babel-plugin-transform-classes/src/transformClass.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/babel-plugin-transform-classes/src/transformClass.js b/packages/babel-plugin-transform-classes/src/transformClass.js
index 66847750231a..60e586c277ab 100644
--- a/packages/babel-plugin-transform-classes/src/transformClass.js
+++ b/packages/babel-plugin-transform-classes/src/transformClass.js
@@ -494,7 +494,8 @@ export default function transformClass(
         node.generator,
         node.async,
       );
-      func.returnType = node.returnType;
+      t.inherits(func, node);
+
       const key = t.toComputedKey(node, node.key);
       if (t.isStringLiteral(key)) {
         func = nameFunction({