Method on

packages/machina/src/fsm.ts:169–174

(eventName: string, callback: (...args: any[]) => void)

    ): Subscription;
    on(eventName: "*", callback: (eventName: string, data: unknown) => void): Subscription;
    on(eventName: string, callback: (...args: any[]) => void): Subscription {
        if (this.disposed) {
            return { off() {} };
        }
        return this.emitter.on(eventName as any, callback as any);
    }

    /**
     * Emit a custom event through the FSM. Built-in lifecycle events are