26 lines
814 B
Rust
26 lines
814 B
Rust
#![cfg(target_arch = "wasm32")]
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//! Wasm panic hook.
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//!
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//! Forwards Rust panics to the browser console via `console_error_panic_hook`,
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//! and additionally stashes the formatted panic message on `window.__wasmPanic`
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//! so JS catch blocks can surface the real cause instead of the opaque
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//! "Unreachable" wasm trap that wasm-bindgen otherwise produces.
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use js_sys::Reflect;
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use wasm_bindgen::{JsValue, prelude::wasm_bindgen};
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#[wasm_bindgen(start)]
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pub fn install() {
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std::panic::set_hook(Box::new(|info| {
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if let Some(window) = web_sys::window() {
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let _ = Reflect::set(
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&window,
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&JsValue::from_str("__wasmPanic"),
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&JsValue::from_str(&info.to_string()),
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);
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}
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console_error_panic_hook::hook(info);
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}));
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}
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