From 2903e444bb15f166d7f8a51b704851f6139ac303 Mon Sep 17 00:00:00 2001
From: Haishan <haishanhan@gmail.com>
Date: Sun, 21 Oct 2018 15:40:18 +0800
Subject: [PATCH] build: optimize core-js modules importing

---
 .babelrc          | 6 +++++-
 webpack.config.js | 3 ++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/.babelrc b/.babelrc
index 61d1cd0..b2a6043 100644
--- a/.babelrc
+++ b/.babelrc
@@ -3,7 +3,11 @@
     [
       "@babel/preset-env",
       {
-        "modules": false
+        "modules": false,
+        "useBuiltIns": "usage",
+        "targets": {
+          "browsers": [">0.25%", "not ie 11", "not op_mini all"]
+        }
       }
     ],
     "@babel/preset-react"
diff --git a/webpack.config.js b/webpack.config.js
index ee50e9e..7922d9d 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -22,7 +22,8 @@ const svgSpriteRule = {
 // ---- entry
 
 const entry = {
-  app: ['whatwg-fetch', '@babel/polyfill', './src/app.js']
+  // app: ['whatwg-fetch', '@babel/polyfill', './src/app.js']
+  app: ['whatwg-fetch', './src/app.js']
 };
 
 // ---- output