Fix icons

Author: JelteMX

src/components/TreeViewComponent.tsx

@@ -4,7 +4,6 @@ import { Tree as ArrayTree } from "array-to-tree";
 import Tree, { AntTreeNode } from "antd/es/tree";
 import Spin from "antd/es/spin";
 import Input from "antd/es/input";
-import Icon from "antd/es/icon";
 import Empty from "antd/es/empty";
 import debounce from "debounce";
 
@@ -107,7 +106,6 @@ export class TreeViewComponent extends Component<TreeViewComponentProps> {
                 expandedKeys={expandedKeys}
                 showIcon={showIcon}
                 showLine={showLine}
-                switcherIcon={showLine ? <Icon type="caret-down-fill" /> : undefined}
                 selectable={false}
                 draggable={draggable}
                 onDrop={this.onDrop.bind(this)}

src/components/icons.js

@@ -1,5 +1,7 @@
 // This is a hack to keep Antdesign Table package small.
 export { default as LoadingOutlined } from "@ant-design/icons/lib/outline/LoadingOutline";
 export { default as SearchOutlined } from "@ant-design/icons/lib/outline/SearchOutline";
+export { default as MinusSquareOutlined } from "@ant-design/icons/lib/outline/MinusSquareOutline";
+export { default as PlusSquareOutlined } from "@ant-design/icons/lib/outline/PlusSquareOutline";
 export { default as CaretDownFilled } from "@ant-design/icons/lib/fill/CaretDownFill";
 export { default as CloseCircleFilled } from "@ant-design/icons/lib/fill/CloseCircleFill";