feat(util): expose isConnectionError check

Author: Ivaylo Andonov

packages/util/src/index.ts

@@ -3,3 +3,4 @@ export * from './BigIntMath';
 export * from './isNotNil';
 export * from './replaceNullsToUndefineds';
 export * from './serializableObject';
+export * from './network';

packages/util/src/network.ts

@@ -0,0 +1,13 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
+export const connectionErrorCodes = ['ENOTFOUND', 'ECONNREFUSED', 'ECONNRESET'];
+
+export const isConnectionError = (error: any) => {
+  if (
+    (error?.code && connectionErrorCodes.includes(error.code)) ||
+    (error?.message && connectionErrorCodes.some((err) => error.message.includes(err)))
+  ) {
+    return true;
+  }
+  return false;
+};