Fix to send panic message to all editor instances immediately upon crash (#460)

frontend/wasm/src/lib.rs

@@ -8,15 +8,17 @@ use logging::WasmLog;
 use std::cell::RefCell;
 use std::collections::HashMap;
 use std::panic;
+use std::sync::atomic::AtomicBool;
 use wasm_bindgen::prelude::*;
 
 // Set up the persistent editor backend state
 static LOGGER: WasmLog = WasmLog;
 thread_local! {
-	pub static EDITOR_HAS_CRASHED: RefCell<Option<FrontendMessage>> = RefCell::new(None);
-	pub static EDITOR_INSTANCES: RefCell<HashMap<u64, editor::Editor>> = RefCell::new(HashMap::new());
+	pub static EDITOR_INSTANCES: RefCell<HashMap<u64, (editor::Editor, api::JsEditorHandle)>> = RefCell::new(HashMap::new());
 }
 
+pub static EDITOR_HAS_CRASHED: AtomicBool = AtomicBool::new(false);
+
 // Initialize the backend
 #[wasm_bindgen(start)]
 pub fn init() {
@@ -31,5 +33,13 @@ fn panic_hook(info: &panic::PanicInfo) {
 	let panic_info = info.to_string();
 	let title = "The editor crashed — sorry about that".to_string();
 	let description = "An internal error occurred. Reload the editor to continue. Please report this by filing an issue on GitHub.".to_string();
-	EDITOR_HAS_CRASHED.with(|crash_status| crash_status.borrow_mut().replace(FrontendMessage::DisplayPanic { panic_info, title, description }));
+	EDITOR_INSTANCES.with(|instances| {
+		instances.borrow_mut().values_mut().for_each(|instance| {
+			instance.1.handle_response_rust_proxy(FrontendMessage::DisplayPanic {
+				panic_info: panic_info.clone(),
+				title: title.clone(),
+				description: description.clone(),
+			})
+		})
+	});
 }