feat: send analytics event for token usage (#37)

packages/bolt/app/lib/.server/llm/stream-text.ts

@@ -30,9 +30,6 @@ export function streamText(messages: Messages, env: Env, options?: StreamingOpti
       'anthropic-beta': 'max-tokens-3-5-sonnet-2024-07-15',
     },
     messages: convertToCoreMessages(messages),
-    onFinish: ({ finishReason, usage, warnings }) => {
-      console.log({ finishReason, usage, warnings });
-    },
     ...options,
   });
 }

packages/bolt/app/lib/.server/llm/switchable-stream.ts

@@ -24,8 +24,6 @@ export default class SwitchableStream extends TransformStream {
       await this._currentReader.cancel();
     }
 
-    console.log('Switching stream');
-
     this._currentReader = newStream.getReader();
 
     this._pumpStream();

packages/bolt/app/lib/analytics.ts

@@ -13,6 +13,7 @@ const MESSAGE_PREFIX = 'Bolt';
 
 export enum AnalyticsTrackEvent {
   MessageSent = `${MESSAGE_PREFIX} Message Sent`,
+  MessageComplete = `${MESSAGE_PREFIX} Message Complete`,
   ChatCreated = `${MESSAGE_PREFIX} Chat Created`,
 }