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/modules/esnext.weak-set.of.js

@@ -0,0 +1,10 @@
+'use strict';
+var $ = require('../internals/export');
+var WeakSetHelpers = require('../internals/weak-set-helpers');
+var createCollectionOf = require('../internals/collection-of');
+
+// `WeakSet.of` method
+// https://tc39.github.io/proposal-setmap-offrom/#sec-weakset.of
+$({ target: 'WeakSet', stat: true, forced: true }, {
+  of: createCollectionOf(WeakSetHelpers.WeakSet, WeakSetHelpers.add, false)
+});