diff --git a/yazi-plugin/src/bindings/calculator.rs b/yazi-plugin/src/bindings/calculator.rs
new file mode 100644
index 00000000..06fa002c
--- /dev/null
+++ b/yazi-plugin/src/bindings/calculator.rs
@@ -0,0 +1,15 @@
+use mlua::{IntoLuaMulti, UserData, UserDataMethods, Value};
+use yazi_binding::Error;
+
+pub struct SizeCalculator(pub yazi_fs::SizeCalculator);
+
+impl UserData for SizeCalculator {
+	fn add_methods<M: UserDataMethods<Self>>(methods: &mut M) {
+		methods.add_async_method_mut("recv", |lua, mut me, ()| async move {
+			match me.0.next().await {
+				Ok(value) => (value, Value::Nil).into_lua_multi(&lua),
+				Err(e) => (Value::Nil, Error::Io(e)).into_lua_multi(&lua),
+			}
+		});
+	}
+}
diff --git a/yazi-plugin/src/bindings/mod.rs b/yazi-plugin/src/bindings/mod.rs
index c2a77b4c..6ffddd08 100644
--- a/yazi-plugin/src/bindings/mod.rs
+++ b/yazi-plugin/src/bindings/mod.rs
@@ -1,3 +1,3 @@
 #![allow(clippy::module_inception)]
 
-yazi_macro::mod_flat!(cha chan icon image input layer mouse permit range receiver);
+yazi_macro::mod_flat!(calculator cha chan icon image input layer mouse permit range receiver);
diff --git a/yazi-plugin/src/fs/fs.rs b/yazi-plugin/src/fs/fs.rs
index 37355859..fd90d672 100644
--- a/yazi-plugin/src/fs/fs.rs
+++ b/yazi-plugin/src/fs/fs.rs
@@ -1,10 +1,10 @@
 use globset::GlobBuilder;
-use mlua::{ExternalError, ExternalResult, Function, IntoLua, IntoLuaMulti, Lua, Table, UserData, UserDataMethods, Value};
+use mlua::{ExternalError, ExternalResult, Function, IntoLua, IntoLuaMulti, Lua, Table, Value};
 use tokio::fs;
 use yazi_binding::{Error, Url, UrlRef};
-use yazi_fs::{SizeCalculator, mounts::PARTITIONS, remove_dir_clean};
+use yazi_fs::{mounts::PARTITIONS, remove_dir_clean};
 
-use crate::{Composer, bindings::Cha, file::File};
+use crate::{Composer, bindings::{Cha, SizeCalculator}, file::File};
 
 pub fn compose(lua: &Lua) -> mlua::Result<Value> {
 	Composer::make(lua, 10, |lua, key| {
@@ -155,20 +155,8 @@ fn read_dir(lua: &Lua) -> mlua::Result<Function> {
 
 fn calc_size(lua: &Lua) -> mlua::Result<Function> {
 	lua.create_async_function(|lua, url: UrlRef| async move {
-		struct Wrapper(SizeCalculator);
-		impl UserData for Wrapper {
-			fn add_methods<M: UserDataMethods<Self>>(methods: &mut M) {
-				methods.add_async_method_mut("recv", |lua, mut me, ()| async move {
-					match me.0.next().await {
-						Ok(value) => (value, Value::Nil).into_lua_multi(&lua),
-						Err(e) => (Value::Nil, Error::Io(e)).into_lua_multi(&lua),
-					}
-				});
-			}
-		}
-
-		match SizeCalculator::new(&*url).await {
-			Ok(it) => Wrapper(it).into_lua_multi(&lua),
+		match yazi_fs::SizeCalculator::new(&*url).await {
+			Ok(it) => SizeCalculator(it).into_lua_multi(&lua),
 			Err(e) => (Value::Nil, Error::Io(e)).into_lua_multi(&lua),
 		}
 	})