add some packages

node_modules/babel-polyfill/lib/index.js

@@ -0,0 +1,28 @@
+"use strict";
+
+require("core-js/shim");
+
+require("regenerator-runtime/runtime");
+
+require("core-js/fn/regexp/escape");
+
+if (global._babelPolyfill) {
+  throw new Error("only one instance of babel-polyfill is allowed");
+}
+global._babelPolyfill = true;
+
+var DEFINE_PROPERTY = "defineProperty";
+function define(O, key, value) {
+  O[key] || Object[DEFINE_PROPERTY](O, key, {
+    writable: true,
+    configurable: true,
+    value: value
+  });
+}
+
+define(String.prototype, "padLeft", "".padStart);
+define(String.prototype, "padRight", "".padEnd);
+
+"pop,reverse,shift,keys,values,entries,indexOf,every,some,forEach,map,filter,find,findIndex,includes,join,slice,concat,push,splice,unshift,sort,lastIndexOf,reduce,reduceRight,copyWithin,fill".split(",").forEach(function (key) {
+  [][key] && define(Array, key, Function.call.bind([][key]));
+});