#forms #report #replace #bug #panic-hook #web #reporting


A panic hook which replaces an HTML element with a bug report form

3 unstable releases

0.2.0 Apr 15, 2024
0.1.1 Mar 17, 2024
0.1.0 Mar 17, 2024

#5 in #panic-hook


103 lines

Web Panic Report

A panic hook which replaces an HTML element with a bug report form.

Discord MIT/Apache 2.0 Build status dependency status Crates.io Docs

[!WARNING] The goal of this project is NOT to provide a full-fledge error reporting and analytics, only to help provide a framework to report panic conditions.

Quickstart to run demo:

# Make sure the Rust toolchain supports the wasm32 target
rustup target add wasm32-unknown-unknown

# Install `wasm-server-runner` for the example
cargo install wasm-server-runner

WASM_SERVER_RUNNER_CUSTOM_INDEX_HTML=examples/index.html cargo run --target wasm32-unknown-unknown --example simple

There is also a web demo available here.



[!IMPORTANT] On release mode, debug symbols are stripped. You will need to enable them manually if you want useful stack traces for production builds.

Add the following to your Cargo.toml

debug = true

Ensure your web page is served with a container element that will be replaced with the bug report form.

  <div id="my-container" style="width: 400px; height: 400px;">
    /** Content that is replaced here on panic, like a game canvas */

Then, set the panic hook at the beginning of your program on web.

fn main() {
    #[cfg(target_arch = "wasm32")]
    web_panic_report::set_default_hook_with("my-container", |panic_info| {
        // Send the panic info to your backend here.
        // This is triggered when the user clicks "Send Report"

You can also use a custom bug report form. See the custom example.



All Loopy projects and development happens in the Loopy Discord. The discord is open to the public.

Contributions are welcome by pull request. The Rust code of conduct applies.


Licensed under either of

at your option


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.


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