From fa14bbfdcf308cd46517a18a0d3ca7b50ae0352a Mon Sep 17 00:00:00 2001
From: jingsam <jing-sam@qq.com>
Date: Fri, 21 Jun 2019 15:27:11 +0800
Subject: [PATCH] Update index.js

---
 packages/babel-preset-mapbox/index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/babel-preset-mapbox/index.js b/packages/babel-preset-mapbox/index.js
index 15d3d4d..43f07ea 100644
--- a/packages/babel-preset-mapbox/index.js
+++ b/packages/babel-preset-mapbox/index.js
@@ -96,6 +96,7 @@ function preset(api, opts) {
         // This is probably a fine default to help trim down bundles when
         // end-users inevitably import '@babel/polyfill'.
         useBuiltIns: 'entry',
+        corejs: 2,
         // Do not transform modules to CJS
         modules: false,
         // mapboxgl doesn't work without this.