fix(testkit): macOS compat + fix test 8c ordering (#24)

artifacts/api-server/src/lib/event-bus.ts

@@ -0,0 +1,34 @@
+import { EventEmitter } from "events";
+
+export type JobEvent =
+  | { type: "job:state"; jobId: string; state: string }
+  | { type: "job:paid"; jobId: string; invoiceType: "eval" | "work" }
+  | { type: "job:completed"; jobId: string; result: string }
+  | { type: "job:failed"; jobId: string; reason: string };
+
+export type SessionEvent =
+  | { type: "session:state"; sessionId: string; state: string }
+  | { type: "session:paid"; sessionId: string; amountSats: number }
+  | { type: "session:balance"; sessionId: string; balanceSats: number };
+
+export type BusEvent = JobEvent | SessionEvent;
+
+class EventBus extends EventEmitter {
+  emit(event: "bus", data: BusEvent): boolean;
+  emit(event: string, ...args: unknown[]): boolean {
+    return super.emit(event, ...args);
+  }
+
+  on(event: "bus", listener: (data: BusEvent) => void): this;
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  on(event: string, listener: (...args: any[]) => void): this {
+    return super.on(event, listener);
+  }
+
+  publish(data: BusEvent): void {
+    this.emit("bus", data);
+  }
+}
+
+export const eventBus = new EventBus();
+eventBus.setMaxListeners(256);