Fixed compilation error on wasm by handling errors

.cargo/config.toml

@@ -3,5 +3,5 @@ rustflags = ["--cfg=web_sys_unstable_apis"]
 
 [build]
 #just comment in the "current" target
-target = "x86_64-unknown-linux-gnu"
-#target = "wasm32-unknown-unknown"
+#target = "x86_64-unknown-linux-gnu"
+target = "wasm32-unknown-unknown"

Cargo.toml

@@ -11,16 +11,16 @@ keywords = ["usb", "wasm", "web-usb", "webusb"]
 categories = ["wasm", "web-programming", "hardware-support"]
 readme = "README.md"
 license = "MIT"
-edition = "2021"
+edition = "2024"
 
 [lib]
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-thiserror = "1.0"
+thiserror = "2.0"
 
 [dev-dependencies]
-tokio-test = "0.4.3"
+tokio-test = "0.4"
 
 # Wasm deps
 [target.'cfg(target_family = "wasm")'.dependencies]

src/backend/wasm.rs

@@ -410,7 +410,9 @@ impl<'a> UsbInterface<'a> for Interface {
         let result: UsbOutTransferResult = match JsFuture::from(Promise::resolve(
             &self
                 .device
-                .control_transfer_out_with_buffer_source(&params, array_obj),
+                .control_transfer_out_with_buffer_source(&params, array_obj)
+                .map_err(|j| Error::CommunicationError(j.as_string().unwrap_or_default()))?
+                .into(),
         ))
         .await
         {
@@ -448,7 +450,9 @@ impl<'a> UsbInterface<'a> for Interface {
         let promise = Promise::resolve(
             &self
                 .device
-                .transfer_out_with_buffer_source(endpoint, array_obj),
+                .transfer_out_with_buffer_source(endpoint, array_obj)
+                .map_err(|j| Error::CommunicationError(j.as_string().unwrap_or_default()))?
+                .into(),
         );
 
         let result = JsFuture::from(promise).await;