use CapturedError as dioxus::Ok() so resources still function as expected (#4851)

examples/01-app-demos/hotdog/src/frontend.rs

@@ -42,7 +42,7 @@ pub fn NavBar() -> Element {
 #[component]
 pub fn DogView() -> Element {
     let mut img_src = use_loader(|| async move {
-        anyhow::Ok(
+        dioxus::Ok(
             reqwest::get("https://dog.ceo/api/breeds/image/random")
                 .await?
                 .json::<serde_json::Value>()

examples/07-fullstack/server_sent_events.rs

@@ -41,7 +41,7 @@ fn app() -> Element {
             events.push(event);
         }
 
-        anyhow::Ok(())
+        dioxus::Ok(())
     });
 
     rsx! {

packages/core/src/lib.rs

@@ -77,8 +77,11 @@ pub(crate) mod innerlude {
 
     pub use anyhow::anyhow;
     pub use anyhow::Context as AnyhowContext;
-    pub use anyhow::Error;
+    // pub use anyhow::Error as AnyhowError;
-    pub use anyhow::Result;
+    // pub type Error = CapturedError;
+
+    /// A result type with a default error of [`CapturedError`].
+    pub type Result<T, E = CapturedError> = std::result::Result<T, E>;
 
     /// An [`Element`] is a possibly-none [`VNode`] created by calling `render` on [`ScopeId`] or [`ScopeState`].
     ///
@@ -97,7 +100,7 @@ pub use crate::innerlude::{
     suspend, throw_error, try_consume_context, use_after_render, use_before_render, use_drop,
     use_hook, use_hook_with_cleanup, with_owner, AnyValue, AnyhowContext, Attribute,
     AttributeValue, Callback, CapturedError, Component, ComponentFunction, DynamicNode, Element,
-    ElementId, Error, ErrorBoundary, ErrorContext, Event, EventHandler, Fragment, HasAttributes,
+    ElementId, ErrorBoundary, ErrorContext, Event, EventHandler, Fragment, HasAttributes,
     IntoAttributeValue, IntoDynNode, LaunchConfig, ListenerCallback, MarkerWrapper, Mutation,
     Mutations, NoOpMutations, OptionStringFromMarker, Properties, ReactiveContext, RenderError,
     Result, Runtime, RuntimeGuard, ScopeId, ScopeState, SpawnIfAsync, SubscriberList, Subscribers,
@@ -106,5 +109,27 @@ pub use crate::innerlude::{
     VNodeInner, VPlaceholder, VText, VirtualDom, WriteMutations,
 };
 
-pub use anyhow::Ok;
+/// Equivalent to `Ok::<_, dioxus::CapturedError>(value)`.
+///
+/// This simplifies creation of an `dioxus::Result` in places where type
+/// inference cannot deduce the `E` type of the result &mdash; without needing
+/// to write`Ok::<_, dioxus::CapturedError>(value)`.
+///
+/// One might think that `dioxus::Result::Ok(value)` would work in such cases
+/// but it does not.
+///
+/// ```console
+/// error[E0282]: type annotations needed for `std::result::Result<i32, E>`
+///   --> src/main.rs:11:13
+///    |
+/// 11 |     let _ = dioxus::Result::Ok(1);
+///    |         -   ^^^^^^^^^^^^^^^^^^ cannot infer type for type parameter `E` declared on the enum `Result`
+///    |         |
+///    |         consider giving this pattern the explicit type `std::result::Result<i32, E>`, where the type parameter `E` is specified
+/// ```
+#[allow(non_snake_case)]
+pub fn Ok<T>(value: T) -> Result<T, CapturedError> {
+    Result::Ok(value)
+}
+
 pub use const_format;

packages/core/src/render_error.rs

@@ -51,7 +51,7 @@ impl From<CapturedError> for RenderError {
     }
 }
 
-impl<E: Into<Error>> From<E> for RenderError {
+impl<E: Into<anyhow::Error>> From<E> for RenderError {
     fn from(e: E) -> Self {
         let anyhow_err = e.into();
 
@@ -69,13 +69,44 @@ impl<E: Into<Error>> From<E> for RenderError {
 
 /// An `anyhow::Error` wrapped in an `Arc` so it can be cheaply cloned and passed around.
 #[derive(Debug, Clone)]
-pub struct CapturedError(pub Arc<Error>);
+pub struct CapturedError(pub Arc<anyhow::Error>);
 
 impl CapturedError {
     /// Create a `CapturedError` from anything that implements `Display`.
     pub fn from_display(t: impl Display) -> Self {
         Self(Arc::new(anyhow::anyhow!(t.to_string())))
     }
+
+    /// Create a `CapturedError` from anything that implements `std::error::Error`.
+    pub fn new<E>(error: E) -> Self
+    where
+        E: std::error::Error + Send + Sync + 'static,
+    {
+        anyhow::Error::new(error).into()
+    }
+
+    /// Create a `CapturedError` from anything that implements `Display` and `Debug`.
+    pub fn msg<M>(t: M) -> Self
+    where
+        M: Display + Debug + Send + Sync + 'static,
+    {
+        anyhow::Error::msg(t).into()
+    }
+
+    /// Create a `CapturedError` from a boxed `std::error::Error`.
+    pub fn from_boxed(boxed_error: Box<dyn std::error::Error + Send + Sync + 'static>) -> Self {
+        anyhow::Error::from_boxed(boxed_error).into()
+    }
+
+    /// Returns the strong count of the underlying error.
+    pub fn _strong_count(&self) -> usize {
+        std::sync::Arc::strong_count(&self.0)
+    }
+
+    /// Try to unwrap the underlying error if this is the only reference to it.
+    pub fn into_inner(self) -> Option<anyhow::Error> {
+        Arc::try_unwrap(self.0).ok()
+    }
 }
 
 #[cfg(feature = "serialize")]
@@ -100,14 +131,14 @@ impl<'de> serde::Deserialize<'de> for CapturedError {
 }
 
 impl std::ops::Deref for CapturedError {
-    type Target = Error;
+    type Target = anyhow::Error;
 
     fn deref(&self) -> &Self::Target {
         &self.0
     }
 }
 
-impl<E: Into<Error>> From<E> for CapturedError {
+impl<E: Into<anyhow::Error>> From<E> for CapturedError {
     fn from(e: E) -> Self {
         Self(Arc::new(e.into()))
     }

packages/desktop/src/file_upload.rs

@@ -331,7 +331,10 @@ impl NativeFileData for DesktopFileData {
     fn read_bytes(
         &self,
     ) -> std::pin::Pin<
-        Box<dyn std::future::Future<Output = Result<bytes::Bytes, dioxus_core::Error>> + 'static>,
+        Box<
+            dyn std::future::Future<Output = Result<bytes::Bytes, dioxus_core::CapturedError>>
+                + 'static,
+        >,
     > {
         let path = self.0.clone();
         Box::pin(async move { Ok(bytes::Bytes::from(std::fs::read(&path)?)) })
@@ -340,7 +343,7 @@ impl NativeFileData for DesktopFileData {
     fn read_string(
         &self,
     ) -> std::pin::Pin<
-        Box<dyn std::future::Future<Output = Result<String, dioxus_core::Error>> + 'static>,
+        Box<dyn std::future::Future<Output = Result<String, dioxus_core::CapturedError>> + 'static>,
     > {
         let path = self.0.clone();
         Box::pin(async move { Ok(std::fs::read_to_string(&path)?) })
@@ -358,7 +361,7 @@ impl NativeFileData for DesktopFileData {
         &self,
     ) -> std::pin::Pin<
         Box<
-            dyn futures_util::Stream<Item = Result<bytes::Bytes, dioxus_core::Error>>
+            dyn futures_util::Stream<Item = Result<bytes::Bytes, dioxus_core::CapturedError>>
                 + 'static
                 + Send,
         >,
@@ -374,7 +377,7 @@ impl NativeFileData for DesktopFileData {
             // let n = file
             //     .read(&mut buf)
             //     .await
-            //     .map_err(|e| dioxus_core::Error::from(e))?;
+            //     .map_err(|e| dioxus_core::CapturedError::from(e))?;
             // if n == 0 {
             //     Ok(None)
             // } else {

packages/dioxus/src/lib.rs

@@ -27,7 +27,7 @@
 
 pub use dioxus_core;
 #[doc(inline)]
-pub use dioxus_core::{CapturedError, Error, Ok, Result};
+pub use dioxus_core::{CapturedError, Ok, Result};
 
 #[cfg(feature = "launch")]
 #[cfg_attr(docsrs, doc(cfg(feature = "launch")))]

packages/fullstack-core/src/loader.rs

@@ -33,7 +33,7 @@ pub fn use_loader<F, T, E>(mut future: impl FnMut() -> F + 'static) -> Result<Lo
 where
     F: Future<Output = Result<T, E>> + 'static,
     T: 'static + PartialEq + Serialize + DeserializeOwned,
-    E: Into<dioxus_core::Error> + 'static,
+    E: Into<CapturedError> + 'static,
 {
     let serialize_context = use_hook(crate::transport::serialize_context);
 
@@ -101,8 +101,8 @@ where
             // Remap the error to the captured error type so it's cheap to clone and pass out, just
             // slightly more cumbersome to access the inner error.
             let out = out.map_err(|e| {
-                let anyhow_err: anyhow::Error = e.into();
+                let anyhow_err: CapturedError = e.into();
-                anyhow_err.into()
+                anyhow_err
             });
 
             // If this is the first run and we are on the server, cache the data in the slot we reserved for it

packages/fullstack-core/src/transport.rs

@@ -4,7 +4,7 @@
 use base64::Engine;
 use dioxus_core::CapturedError;
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
-use std::{cell::RefCell, io::Cursor, rc::Rc, sync::Arc};
+use std::{cell::RefCell, io::Cursor, rc::Rc};
 
 #[cfg(feature = "web")]
 thread_local! {
@@ -429,15 +429,15 @@ pub fn head_element_hydration_entry() -> SerializeContextEntry<bool> {
 
 /// A `Transportable` type can be safely transported from the server to the client, and be used for
 /// hydration. Not all types can sensibly be transported, but many can. This trait makes it possible
-/// to customize how types are transported which helps for non-serializable types like `dioxus_core::Error`.
+/// to customize how types are transported which helps for non-serializable types like `dioxus_core::CapturedError`.
 ///
 /// By default, all types that implement `Serialize` and `DeserializeOwned` are transportable.
 ///
-/// You can also implement `Transportable` for `Result<T, dioxus_core::Error>` where `T` is
+/// You can also implement `Transportable` for `Result<T, dioxus_core::CapturedError>` where `T` is
 /// `Serialize` and `DeserializeOwned` to allow transporting results that may contain errors.
 ///
-/// Note that transporting a `Result<T, dioxus_core::Error>` will lose various aspects of the original
+/// Note that transporting a `Result<T, dioxus_core::CapturedError>` will lose various aspects of the original
-/// `dioxus_core::Error` such as backtraces and source errors, but will preserve the error message.
+/// `dioxus_core::CapturedError` such as backtraces and source errors, but will preserve the error message.
 pub trait Transportable<M = ()>: 'static {
     /// Serialize the type to a byte vector for transport
     fn transport_to_bytes(&self) -> Vec<u8>;
@@ -474,7 +474,7 @@ struct TransportResultErr<T> {
 #[doc(hidden)]
 pub struct TransportViaErrMarker;
 
-impl<T> Transportable<TransportViaErrMarker> for Result<T, dioxus_core::Error>
+impl<T> Transportable<TransportViaErrMarker> for Result<T, anyhow::Error>
 where
     T: Serialize + DeserializeOwned + 'static,
 {
@@ -497,7 +497,7 @@ where
         let err: TransportResultErr<T> = ciborium::from_reader(Cursor::new(bytes))?;
         match err.error {
             Ok(value) => Ok(Ok(value)),
-            Err(captured) => Ok(Err(dioxus_core::Error::msg(captured.to_string()))),
+            Err(captured) => Ok(Err(anyhow::Error::msg(captured.to_string()))),
         }
     }
 }
@@ -525,8 +525,6 @@ impl Transportable<TransportCapturedError> for CapturedError {
         Self: Sized,
     {
         let err: TransportError = ciborium::from_reader(Cursor::new(bytes))?;
-        Ok(CapturedError(Arc::new(dioxus_core::Error::msg::<String>(
+        Ok(dioxus_core::CapturedError::msg::<String>(err.error))
-            err.error,
-        ))))
     }
 }

packages/fullstack/src/lazy.rs

@@ -1,5 +1,6 @@
 #![allow(clippy::needless_return)]
 
+use dioxus_core::CapturedError;
 use std::{hint::black_box, prelude::rust_2024::Future, sync::atomic::AtomicBool};
 
 /// `Lazy` is a thread-safe, lazily-initialized global variable.
@@ -14,7 +15,7 @@ use std::{hint::black_box, prelude::rust_2024::Future, sync::atomic::AtomicBool}
 pub struct Lazy<T> {
     value: std::sync::OnceLock<T>,
     started_initialization: AtomicBool,
-    constructor: Option<fn() -> Result<T, dioxus_core::Error>>,
+    constructor: Option<fn() -> Result<T, CapturedError>>,
     _phantom: std::marker::PhantomData<T>,
 }
 
@@ -36,7 +37,7 @@ impl<T: Send + Sync + 'static> Lazy<T> {
     where
         F: Fn() -> G + Copy,
         G: Future<Output = Result<T, E>> + Send + 'static,
-        E: Into<dioxus_core::Error>,
+        E: Into<CapturedError>,
     {
         if std::mem::size_of::<F>() != 0 {
             panic!("The constructor function must be a zero-sized type (ZST). Consider using a function pointer or a closure without captured variables.");
@@ -57,10 +58,10 @@ impl<T: Send + Sync + 'static> Lazy<T> {
     ///
     /// This should only be called once during the server setup phase, typically inside `dioxus::serve`.
     /// Future calls to this method will return an error containing the provided value.
-    pub fn set(&self, pool: T) -> Result<(), dioxus_core::Error> {
+    pub fn set(&self, pool: T) -> Result<(), CapturedError> {
         let res = self.value.set(pool);
         if res.is_err() {
-            return Err(anyhow::anyhow!("Lazy value is already initialized."));
+            return Err(anyhow::anyhow!("Lazy value is already initialized.").into());
         }
 
         Ok(())
@@ -71,7 +72,7 @@ impl<T: Send + Sync + 'static> Lazy<T> {
     }
 
     /// Initialize the value of the `Lazy` instance if it hasn't been initialized yet.
-    pub fn initialize(&self) -> Result<(), dioxus_core::Error> {
+    pub fn initialize(&self) -> Result<(), CapturedError> {
         if let Some(constructor) = self.constructor {
             // If we're already initializing this value, wait on the receiver.
             if self
@@ -115,12 +116,12 @@ impl<T: Send + Sync + 'static> std::ops::Deref for Lazy<T> {
 ///
 /// We call the `rust-call` method of the zero-sized constructor function. This is safe because we're
 /// not actually dereferencing any unsafe data, just calling its vtable entry to get the future.
-fn blocking_initialize<T, F, G, E>() -> Result<T, dioxus_core::Error>
+fn blocking_initialize<T, F, G, E>() -> Result<T, CapturedError>
 where
     T: Send + Sync + 'static,
     F: Fn() -> G + Copy,
     G: Future<Output = Result<T, E>> + Send + 'static,
-    E: Into<dioxus_core::Error>,
+    E: Into<CapturedError>,
 {
     assert_eq!(std::mem::size_of::<F>(), 0, "The constructor function must be a zero-sized type (ZST). Consider using a function pointer or a closure without captured variables.");
 

packages/fullstack/src/magic.rs

@@ -566,6 +566,7 @@ mod resp {
 
     use super::*;
     use axum::response::Response;
+    use dioxus_core::CapturedError;
     use http::HeaderValue;
 
     /// A trait for converting the result of the Server Function into an Axum response.
@@ -661,6 +662,71 @@ mod resp {
         }
     }
 
+    impl<T> MakeAxumError<CapturedError> for &&ServerFnDecoder<Result<T, CapturedError>> {
+        fn make_axum_error(
+            self,
+            result: Result<Response, CapturedError>,
+        ) -> Result<Response, Response> {
+            match result {
+                Ok(res) => Ok(res),
+
+                // Optimize the case where we have sole ownership of the error
+                Err(errr) if errr._strong_count() == 1 => {
+                    let err = errr.into_inner().unwrap();
+                    <&&ServerFnDecoder<Result<T, anyhow::Error>> as MakeAxumError<anyhow::Error>>::make_axum_error(
+                        &&ServerFnDecoder::new(),
+                        Err(err),
+                    )
+                }
+
+                Err(errr) => {
+                    // The `WithHttpError` trait emits ServerFnErrors so we can downcast them here
+                    // to create richer responses.
+                    let payload = match errr.downcast_ref::<ServerFnError>() {
+                        Some(ServerFnError::ServerError {
+                            message,
+                            code,
+                            details,
+                        }) => ErrorPayload {
+                            message: message.clone(),
+                            code: *code,
+                            data: details.clone(),
+                        },
+                        Some(other) => ErrorPayload {
+                            message: other.to_string(),
+                            code: 500,
+                            data: None,
+                        },
+                        None => match errr.downcast_ref::<HttpError>() {
+                            Some(http_err) => ErrorPayload {
+                                message: http_err
+                                    .message
+                                    .clone()
+                                    .unwrap_or_else(|| http_err.status.to_string()),
+                                code: http_err.status.as_u16(),
+                                data: None,
+                            },
+                            None => ErrorPayload {
+                                code: 500,
+                                message: errr.to_string(),
+                                data: None,
+                            },
+                        },
+                    };
+
+                    let body = serde_json::to_string(&payload).unwrap();
+                    let mut resp = Response::new(body.into());
+                    resp.headers_mut().insert(
+                        http::header::CONTENT_TYPE,
+                        HeaderValue::from_static("application/json"),
+                    );
+                    *resp.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
+                    Err(resp)
+                }
+            }
+        }
+    }
+
     impl<T> MakeAxumError<anyhow::Error> for &&ServerFnDecoder<Result<T, anyhow::Error>> {
         fn make_axum_error(
             self,

packages/fullstack/src/payloads/websocket.rs

@@ -61,7 +61,7 @@ use {
 pub fn use_websocket<
     In: 'static,
     Out: 'static,
-    E: Into<dioxus_core::Error> + 'static,
+    E: Into<CapturedError> + 'static,
     F: Future<Output = Result<Websocket<In, Out, Enc>, E>> + 'static,
     Enc: Encoding,
 >(
@@ -72,7 +72,7 @@ pub fn use_websocket<
     let status_read = use_hook(|| ReadSignal::new(status));
 
     let connection = use_resource(move || {
-        let connection = connect_to_websocket().map_err(|e| CapturedError::from(e.into()));
+        let connection = connect_to_websocket().map_err(|e| e.into());
         async move {
             let connection = connection.await;
 

packages/fullstack/src/request.rs

@@ -149,7 +149,7 @@ impl<T, E> std::future::Future for ServerFnRequest<Result<T, E>> {
 #[diagnostic::on_unimplemented(
     message = "The return type of a server function must be `Result<T, E>`",
     note = "`T` is either `impl IntoResponse` *or* `impl Serialize`",
-    note = "`E` is either `From<ServerFnError> + Serialize`, `dioxus::Error` or `StatusCode`."
+    note = "`E` is either `From<ServerFnError> + Serialize`, `dioxus::CapturedError` or `StatusCode`."
 )]
 pub trait AssertIsResult {}
 impl<T, E> AssertIsResult for Result<T, E> {}

packages/html/src/file_data.rs

@@ -30,17 +30,18 @@ impl FileData {
         self.inner.last_modified()
     }
 
-    pub async fn read_bytes(&self) -> Result<Bytes, dioxus_core::Error> {
+    pub async fn read_bytes(&self) -> Result<Bytes, dioxus_core::CapturedError> {
         self.inner.read_bytes().await
     }
 
-    pub async fn read_string(&self) -> Result<String, dioxus_core::Error> {
+    pub async fn read_string(&self) -> Result<String, dioxus_core::CapturedError> {
         self.inner.read_string().await
     }
 
     pub fn byte_stream(
         &self,
-    ) -> Pin<Box<dyn Stream<Item = Result<Bytes, dioxus_core::Error>> + Send + 'static>> {
+    ) -> Pin<Box<dyn Stream<Item = Result<Bytes, dioxus_core::CapturedError>> + Send + 'static>>
+    {
         self.inner.byte_stream()
     }
 
@@ -70,13 +71,19 @@ pub trait NativeFileData: Send + Sync {
     fn content_type(&self) -> Option<String>;
     fn read_bytes(
         &self,
-    ) -> Pin<Box<dyn Future<Output = Result<Bytes, dioxus_core::Error>> + 'static>>;
+    ) -> Pin<Box<dyn Future<Output = Result<Bytes, dioxus_core::CapturedError>> + 'static>>;
     fn byte_stream(
         &self,
-    ) -> Pin<Box<dyn futures_util::Stream<Item = Result<Bytes, dioxus_core::Error>> + 'static + Send>>;
+    ) -> Pin<
+        Box<
+            dyn futures_util::Stream<Item = Result<Bytes, dioxus_core::CapturedError>>
+                + 'static
+                + Send,
+        >,
+    >;
     fn read_string(
         &self,
-    ) -> Pin<Box<dyn Future<Output = Result<String, dioxus_core::Error>> + 'static>>;
+    ) -> Pin<Box<dyn Future<Output = Result<String, dioxus_core::CapturedError>> + 'static>>;
     fn inner(&self) -> &dyn std::any::Any;
 }
 
@@ -143,7 +150,8 @@ mod serialize {
 
         fn read_bytes(
             &self,
-        ) -> Pin<Box<dyn Future<Output = Result<Bytes, dioxus_core::Error>> + 'static>> {
+        ) -> Pin<Box<dyn Future<Output = Result<Bytes, dioxus_core::CapturedError>> + 'static>>
+        {
             let contents = self.contents.clone();
             let path = self.path.clone();
 
@@ -157,13 +165,16 @@ mod serialize {
                     return Ok(std::fs::read(path).map(Bytes::from)?);
                 }
 
-                Err(dioxus_core::Error::msg("File contents not available"))
+                Err(dioxus_core::CapturedError::msg(
+                    "File contents not available",
+                ))
             })
         }
 
         fn read_string(
             &self,
-        ) -> Pin<Box<dyn Future<Output = Result<String, dioxus_core::Error>> + 'static>> {
+        ) -> Pin<Box<dyn Future<Output = Result<String, dioxus_core::CapturedError>> + 'static>>
+        {
             let contents = self.contents.clone();
             let path = self.path.clone();
 
@@ -177,7 +188,9 @@ mod serialize {
                     return Ok(std::fs::read_to_string(path)?);
                 }
 
-                Err(dioxus_core::Error::msg("File contents not available"))
+                Err(dioxus_core::CapturedError::msg(
+                    "File contents not available",
+                ))
             })
         }
 
@@ -185,7 +198,9 @@ mod serialize {
             &self,
         ) -> Pin<
             Box<
-                dyn futures_util::Stream<Item = Result<Bytes, dioxus_core::Error>> + 'static + Send,
+                dyn futures_util::Stream<Item = Result<Bytes, dioxus_core::CapturedError>>
+                    + 'static
+                    + Send,
             >,
         > {
             let contents = self.contents.clone();
@@ -201,7 +216,9 @@ mod serialize {
                     return Ok(std::fs::read(path).map(Bytes::from)?);
                 }
 
-                Err(dioxus_core::Error::msg("File contents not available"))
+                Err(dioxus_core::CapturedError::msg(
+                    "File contents not available",
+                ))
             }))
         }
 

packages/web/src/files.rs

@@ -39,7 +39,7 @@ impl NativeFileData for WebFileData {
 
     fn read_bytes(
         &self,
-    ) -> Pin<Box<dyn Future<Output = Result<Bytes, dioxus_core::Error>> + 'static>> {
+    ) -> Pin<Box<dyn Future<Output = Result<Bytes, dioxus_core::CapturedError>> + 'static>> {
         let file_reader = self.reader.clone();
         let file_reader_ = self.reader.clone();
         let file = self.file.clone();
@@ -72,7 +72,7 @@ impl NativeFileData for WebFileData {
 
     fn read_string(
         &self,
-    ) -> Pin<Box<dyn Future<Output = Result<String, dioxus_core::Error>> + 'static>> {
+    ) -> Pin<Box<dyn Future<Output = Result<String, dioxus_core::CapturedError>> + 'static>> {
         let file_reader = self.reader.clone();
         let file_reader_ = self.reader.clone();
         let file = self.file.clone();
@@ -113,8 +113,13 @@ impl NativeFileData for WebFileData {
     /// We should maybe update these APIs to use our own custom `ByteBuffer` type to avoid going through `Vec<u8>`?
     fn byte_stream(
         &self,
-    ) -> Pin<Box<dyn futures_util::Stream<Item = Result<Bytes, dioxus_core::Error>> + 'static + Send>>
+    ) -> Pin<
-    {
+        Box<
+            dyn futures_util::Stream<Item = Result<Bytes, dioxus_core::CapturedError>>
+                + 'static
+                + Send,
+        >,
+    > {
         let file = self.file.dyn_ref::<web_sys::Blob>().unwrap().clone();
         Box::pin(SendWrapper::new(futures_util::stream::once(async move {
             let array_buff = wasm_bindgen_futures::JsFuture::from(file.array_buffer())