matchmedia polyfill

package-lock.json

@@ -6402,6 +6402,11 @@
         "node-emoji": "1.8.1"
       }
     },
+    "matchmedia-polyfill": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/matchmedia-polyfill/-/matchmedia-polyfill-0.3.0.tgz",
+      "integrity": "sha1-b5HjQBKz38nVt2zsid6vwbQbRfo="
+    },
     "math-expression-evaluator": {
       "version": "1.2.17",
       "resolved": "https://registry.npmjs.org/math-expression-evaluator/-/math-expression-evaluator-1.2.17.tgz",

package.json

@@ -55,6 +55,7 @@
     "install": "^0.8.7",
     "intl": "^1.2.5",
     "js-yaml": "^3.8.1",
+    "matchmedia-polyfill": "^0.3.0",
     "react": "^15.4.2",
     "react-dom": "^15.4.2",
     "react-intl": "^2.2.3",

src/index.js

@@ -2,6 +2,7 @@ import 'core-js/shim'
 import 'intl'
 import 'intl/locale-data/jsonp/en.js'
 import 'intl/locale-data/jsonp/zh-Hans.js'
+import 'matchmedia-polyfill'
 import React from 'react'
 import ReactDOM from 'react-dom'
 import App from './App'