更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/core-js-pure/internals/to-big-int.js

@@ -0,0 +1,13 @@
+'use strict';
+var toPrimitive = require('../internals/to-primitive');
+
+var $TypeError = TypeError;
+
+// `ToBigInt` abstract operation
+// https://tc39.es/ecma262/#sec-tobigint
+module.exports = function (argument) {
+  var prim = toPrimitive(argument, 'number');
+  if (typeof prim == 'number') throw new $TypeError("Can't convert number to bigint");
+  // eslint-disable-next-line es/no-bigint -- safe
+  return BigInt(prim);
+};