throw when n>1

Author: 404Wolf

src/lib/beta/BetaToolRunner.ts

@@ -72,6 +72,11 @@ export class BetaToolRunner<Stream extends boolean> {
     params: BetaToolRunnerParams,
     options?: BetaToolRunnerRequestOptions,
   ) {
+    params.n ??= 1;
+    if (params && params.n > 1) {
+      throw new Error('BetaToolRunner does not support n > 1');
+    }
+
     this.#state = {
       params: {
         // You can't clone the entire params since there are functions as handlers.

tests/lib/tools/ToolRunner.test.ts

@@ -1,8 +1,4 @@
 import OpenAI from 'openai';
-// import { BetaMessage, BetaContentBlock, BetaToolResultBlockParam } from 'openai/sdk/resources/beta';
-// import { BetaRunnableTool } from 'openai/sdk/lib/tools/BetaRunnableTool';
-// import { BetaRawMessageStreamEvent } from 'openai/sdk/resources/beta/messages';
-// import { Fetch } from 'openai/sdk/internal/builtin-types';
 import { mockFetch } from '../../utils/mock-fetch';
 import { BetaRunnableTool } from 'openai/lib/beta/BetaRunnableTool';
 import {
@@ -432,6 +428,16 @@ describe('ToolRunner', () => {
     );
   });
 
+  it('throws when constructed with n>1', async () => {
+    expect(() => {
+      setupTest({ n: 999 });
+    }).toThrow('BetaToolRunner does not support n > 1');
+
+    expect(() => {
+      setupTest({ n: null });
+    }).not.toThrow();
+  });
+
   describe('iterator.next()', () => {
     it('yields CompletionMessage', async () => {
       const { runner, handleAssistantMessage } = setupTest();