chore(examples): add reasoning example (#75)

Author: dkundel-openai

examples/basic/package.json

@@ -20,6 +20,7 @@
     "start:stream-text": "tsx stream-text.ts",
     "start:json-schema-output-type": "tsx json-schema-output-type.ts",
     "start:tool-use-behavior": "tsx tool-use-behavior.ts",
-    "start:tools": "tsx tools.ts"
+    "start:tools": "tsx tools.ts",
+    "start:reasoning": "tsx reasoning.ts"
   }
 }

examples/basic/reasoning.ts

@@ -0,0 +1,36 @@
+import { styleText } from 'node:util';
+import { Agent, run } from '@openai/agents';
+
+const ASSISTANT_PREFIX = styleText(['bgGreen', 'black'], 'Assistant');
+const THINKING_PREFIX = styleText(['bgGray', 'black'], 'Thought');
+
+async function main() {
+  const agent = new Agent({
+    name: 'Agent',
+    model: 'o3',
+    modelSettings: {
+      providerData: {
+        reasoning: {
+          effort: 'high',
+          summary: 'auto',
+        },
+      },
+    },
+  });
+
+  const result = await run(agent, 'How many r are in strawberry?');
+
+  for (const item of result.newItems) {
+    if (item.type === 'reasoning_item') {
+      for (const entry of item.rawItem.content) {
+        if (entry.type === 'input_text') {
+          console.log(`${THINKING_PREFIX}: ${entry.text}`);
+        }
+      }
+    }
+  }
+
+  console.log(`${ASSISTANT_PREFIX}: ${result.finalOutput}`);
+}
+
+main().catch(console.error);