new

index.ts

 export * from './src/workflow';
 export * from './src/dual-object';
 export * from './src/workflow-dispatcher';
+export * from './src/round-robin';

src/round-robin.ts

+export class RoundRobin<T> {
+  private index = 0;
+
+  constructor(public items: T[]) {
+    if (items.length === 0) {
+      throw new Error('RoundRobin requires at least one item');
+    }
+  }
+
+  next(): T {
+    const nextIndex = this.index % this.items.length;
+    this.index = (this.index + 1) % this.items.length;
+    return this.items[nextIndex];
+  }
+}