chore(rivetkit): log close code & reason in disconnect warning

Author: NathanFlurry

engine/sdks/typescript/runner/src/mod.ts

@@ -43,7 +43,7 @@ export interface RunnerConfig {
 	prepopulateActorNames: Record<string, { metadata: Record<string, any> }>;
 	metadata?: Record<string, any>;
 	onConnected: () => void;
-	onDisconnected: () => void;
+	onDisconnected: (code: number, reason: string) => void;
 	onShutdown: () => void;
 	fetch: (
 		runner: Runner,
@@ -640,7 +640,7 @@ export class Runner {
 				reason: ev.reason.toString(),
 			});
 
-			this.#config.onDisconnected();
+			this.#config.onDisconnected(ev.code, ev.reason);
 
 			if (ev.reason.toString().startsWith("ws.eviction")) {
 				logger()?.info({

rivetkit-typescript/packages/rivetkit/src/drivers/engine/actor-driver.ts

@@ -125,11 +125,13 @@ export class EngineActorDriver implements ActorDriver {
 
 				this.#runnerStarted.resolve(undefined);
 			},
-			onDisconnected: () => {
+			onDisconnected: (code, reason) => {
 				logger().warn({
 					msg: "runner disconnected",
 					namespace: this.#runConfig.namespace,
 					runnerName: this.#runConfig.runnerName,
+					code,
+					reason,
 				});
 				hasDisconnected = true;
 			},