diff --git a/Cargo.lock b/Cargo.lock
index c9d627a..9cc2478 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -584,7 +584,6 @@ dependencies = [
 name = "umc_kuwo"
 version = "0.1.9"
 dependencies = [
- "anyhow",
  "byteorder",
  "itertools 0.13.0",
  "thiserror",
diff --git a/um_wasm/src/errors.rs b/um_wasm/src/errors.rs
index ead1b6a..649d3aa 100644
--- a/um_wasm/src/errors.rs
+++ b/um_wasm/src/errors.rs
@@ -1,22 +1,8 @@
 use wasm_bindgen::JsError;
 
-#[derive(Debug)]
-pub struct WasmError {
-    error: anyhow::Error,
-}
-
-impl From<anyhow::Error> for WasmError {
-    fn from(err: anyhow::Error) -> WasmError {
-        WasmError { error: err }
-    }
-}
-
-impl From<WasmError> for JsError {
-    fn from(error: WasmError) -> Self {
-        JsError::new(&error.error.to_string())
-    }
-}
-
-pub fn map_js_error(error: anyhow::Error) -> wasm_bindgen::JsError {
-    JsError::new(&error.to_string())
+pub fn map_js_error<T>(error: T) -> JsError
+where
+    T: std::fmt::Debug + std::fmt::Display,
+{
+    JsError::new(error.to_string().as_str())
 }