sysadmin reconstruct repo page (#3980)

frontend/src/models/system-admin/dirent.js

@@ -0,0 +1,14 @@
+class Dirent {
+  constructor(obj) {
+    this.name = obj.obj_name;
+    this.mtime = obj.last_update;
+    this.size = obj.file_size;
+    this.is_file = obj.is_file;
+  }
+
+  isDir() {
+    return !this.is_file;
+  }
+}
+
+export default Dirent;