fix: tentative fix for error and WASM

src/error.rs

 use std::fmt::{self, Display, Formatter};
 
+#[cfg(feature = "wasm")]
+use wasm_bindgen::prelude::*;
+
+#[cfg(feature = "wasm")]
+use wasm_bindgen::convert::*;
+
 /// Top level enum for error handling.
 /// Most of the time, you will want to use the `CustomError` variant
 /// to provide a more detailed error message.
-#[derive(Debug)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub enum Error {
     NotFound,
     BadRequest,
@@ -27,3 +33,13 @@ impl Display for Error {
         write!(f, "{}", self.description())
     }
 }
+
+#[cfg(feature = "wasm")]
+impl IntoWasmAbi for Error {
+    type Abi = <Vec<u8> as IntoWasmAbi>::Abi;
+
+    #[inline]
+    fn into_abi(self) -> Self::Abi {
+        self.description().into_abi();
+    }
+}