Add actions for folder

-import React, { useState } from "react";
+import React, { useState, Fragment } from "react";
 import { Popconfirm, Popover, Button, message } from "antd";
 import { FileItem } from "./useFileList";
 import styles from "./FileItemActions.module.scss";
@@ -52,9 +52,11 @@ export function FileItemActions({
           이름 변경
         </Button>
       </Popover>
-      <Button type="link" size="small">
-        공유
-      </Button>
+      {!item.is_folder && (
+        <Button type="link" size="small">
+          공유
+        </Button>
+      )}
       <Popover
         title="이동할 폴더를 선택하세요"
         content={
@@ -78,36 +80,40 @@ export function FileItemActions({
           이동
         </Button>
       </Popover>
-      <Popover
-        title="복사할 폴더를 선택하세요"
-        content={
-          <FileListPopover
-            root={item.parent}
-            onSelect={(to: number) => {
-              onCopy(item.id, to);
-              setCopy(false);
-            }}
-            onCancel={() => setCopy(false)}
-          />
-        }
-        trigger="click"
-        visible={copy}
-        onVisibleChange={setCopy}
-      >
-        <Button type="link" size="small">
-          복사
-        </Button>
-      </Popover>
-      <Popconfirm
-        title="정말로 삭제하시겠습니까?"
-        onConfirm={() => onDelete(item.id)}
-        okText="삭제"
-        cancelText="취소"
-      >
-        <Button type="link" size="small">
-          삭제
-        </Button>
-      </Popconfirm>
+      {!item.is_folder && (
+        <Popover
+          title="복사할 폴더를 선택하세요"
+          content={
+            <FileListPopover
+              root={item.parent}
+              onSelect={(to: number) => {
+                onCopy(item.id, to);
+                setCopy(false);
+              }}
+              onCancel={() => setCopy(false)}
+            />
+          }
+          trigger="click"
+          visible={copy}
+          onVisibleChange={setCopy}
+        >
+          <Button type="link" size="small">
+            복사
+          </Button>
+        </Popover>
+      )}
+      {!item.is_folder && (
+        <Popconfirm
+          title="정말로 삭제하시겠습니까?"
+          onConfirm={() => onDelete(item.id)}
+          okText="삭제"
+          cancelText="취소"
+        >
+          <Button type="link" size="small">
+            삭제
+          </Button>
+        </Popconfirm>
+      )}
     </div>
   );
 }

@@ -152,23 +152,22 @@ function getColumns({
       dataIndex: "size",
       width: 120,
       render: (bytes: number, item) =>
-        item.is_folder ? "" : filesize(bytes, { round: 0 }),
+        item.is_folder ? "-" : filesize(bytes, { round: 0 }),
     },
     {
       title: "",
       key: "action",
       dataIndex: "",
       width: 300,
-      render: (__: any, item) =>
-        item.is_folder ? null : (
-          <FileItemActions
-            item={item}
-            onRename={handleRename}
-            onMove={handleMove}
-            onCopy={handleCopy}
-            onDelete={handleDelete}
-          />
-        ),
+      render: (__: any, item) => (
+        <FileItemActions
+          item={item}
+          onRename={handleRename}
+          onMove={handleMove}
+          onCopy={handleCopy}
+          onDelete={handleDelete}
+        />
+      ),
     },
   ];
 }