lib/client: catch handleMessage errors

lib/client.js

@@ -115,7 +115,15 @@ export default class Client extends EventTarget {
 			return;
 		}
 		this.ws.addEventListener("open", this.handleOpen.bind(this));
-		this.ws.addEventListener("message", this.handleMessage.bind(this));
+
+		this.ws.addEventListener("message", (event) => {
+			try {
+				this.handleMessage(event);
+			} catch (err) {
+				this.dispatchEvent(new CustomEvent("error", { detail: err }));
+				this.disconnect();
+			}
+		});
 
 		this.ws.addEventListener("close", (event) => {
 			console.log("Connection closed (code: " + event.code + ")");