add all frontend files

node_modules/antd/lib/affix/style/index.d.ts

@@ -0,0 +1,11 @@
+import type { GetDefaultToken } from '../../theme/internal';
+export interface ComponentToken {
+    /**
+     * @desc 弹出层的 z-index
+     * @descEN z-index of popup
+     */
+    zIndexPopup: number;
+}
+export declare const prepareComponentToken: GetDefaultToken<'Affix'>;
+declare const _default: (prefixCls: string, rootCls?: string) => readonly [(node: React.ReactElement) => React.ReactElement, string, string];
+export default _default;

node_modules/antd/lib/affix/style/index.js

@@ -0,0 +1,25 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.prepareComponentToken = exports.default = void 0;
+var _internal = require("../../theme/internal");
+// ============================== Shared ==============================
+const genSharedAffixStyle = token => {
+  const {
+    componentCls
+  } = token;
+  return {
+    [componentCls]: {
+      position: 'fixed',
+      zIndex: token.zIndexPopup
+    }
+  };
+};
+const prepareComponentToken = token => ({
+  zIndexPopup: token.zIndexBase + 10
+});
+// ============================== Export ==============================
+exports.prepareComponentToken = prepareComponentToken;
+var _default = exports.default = (0, _internal.genStyleHooks)('Affix', genSharedAffixStyle, prepareComponentToken);