fix(js-sdk): shutdown circuit breaker during client disposal (#7297)

Author: ardatan

.changeset/great-boxes-buy.md

@@ -0,0 +1,5 @@
+---
+'@graphql-hive/core': patch
+---
+
+Shutdown Circuit Breaker properly while disposing Hive Client

packages/libraries/core/src/client/agent.ts

@@ -253,22 +253,25 @@ export function createAgent<TEvent>(
       skipSchedule: true,
       throwOnError: false,
     });
+
+    circuitBreaker.shutdown();
   }
 
   if (options.circuitBreaker) {
-    circuitBreaker = new CircuitBreaker(sendHTTPCall, {
+    const circuitBreakerInstance = new CircuitBreaker(sendHTTPCall, {
       ...options.circuitBreaker,
       timeout: false,
       autoRenewAbortController: true,
     });
+    circuitBreaker = circuitBreakerInstance;
 
-    (circuitBreaker as any).on('open', () =>
+    circuitBreakerInstance.on('open', () =>
       breakerLogger.error('circuit opened - backend seems unreachable.'),
     );
-    (circuitBreaker as any).on('halfOpen', () =>
+    circuitBreakerInstance.on('halfOpen', () =>
       breakerLogger.info('circuit half open - testing backend connectivity'),
     );
-    (circuitBreaker as any).on('close', () =>
+    circuitBreakerInstance.on('close', () =>
       breakerLogger.info('circuit closed - backend recovered '),
     );
   } else {
@@ -277,6 +280,7 @@ export function createAgent<TEvent>(
         return undefined;
       },
       fire: sendHTTPCall,
+      shutdown() {},
     };
   }
 
@@ -303,4 +307,5 @@ export function createAgent<TEvent>(
 type CircuitBreakerInterface<TI extends unknown[] = unknown[], TR = unknown> = {
   fire(...args: TI): TR;
   getSignal(): AbortSignal | undefined;
+  shutdown(): void;
 };