debug: Add logging to stream.usage for debugging

Temporary logging to see what stream.usage actually resolves to.

Co-authored-by: nate <[email protected]>
Generated with [Continue](https://continue.dev)

Author: continue[bot]

packages/openai-adapters/src/apis/OpenAI.ts

@@ -341,29 +341,47 @@ export class OpenAIApi implements BaseLlmApi {
     }
 
     // Get final usage from stream.usage Promise (finish event has incomplete data)
-    const finalUsage = await stream.usage;
-    if (finalUsage) {
-      const promptTokens =
-        typeof finalUsage.promptTokens === "number"
-          ? finalUsage.promptTokens
-          : 0;
-      const completionTokens =
-        typeof finalUsage.completionTokens === "number"
-          ? finalUsage.completionTokens
-          : 0;
-      const totalTokens =
-        typeof finalUsage.totalTokens === "number"
-          ? finalUsage.totalTokens
-          : promptTokens + completionTokens;
-
-      yield usageChatChunk({
-        model: modifiedBody.model,
-        usage: {
-          prompt_tokens: promptTokens,
-          completion_tokens: completionTokens,
-          total_tokens: totalTokens,
-        },
+    try {
+      const finalUsage = await stream.usage;
+      console.log("[OpenAI Vercel] stream.usage resolved:", {
+        finalUsage,
+        type: typeof finalUsage,
+        keys: finalUsage ? Object.keys(finalUsage) : [],
       });
+
+      if (finalUsage) {
+        const promptTokens =
+          typeof finalUsage.promptTokens === "number"
+            ? finalUsage.promptTokens
+            : 0;
+        const completionTokens =
+          typeof finalUsage.completionTokens === "number"
+            ? finalUsage.completionTokens
+            : 0;
+        const totalTokens =
+          typeof finalUsage.totalTokens === "number"
+            ? finalUsage.totalTokens
+            : promptTokens + completionTokens;
+
+        console.log("[OpenAI Vercel] Emitting usage:", {
+          promptTokens,
+          completionTokens,
+          totalTokens,
+        });
+
+        yield usageChatChunk({
+          model: modifiedBody.model,
+          usage: {
+            prompt_tokens: promptTokens,
+            completion_tokens: completionTokens,
+            total_tokens: totalTokens,
+          },
+        });
+      } else {
+        console.warn("[OpenAI Vercel] stream.usage resolved to falsy value");
+      }
+    } catch (error) {
+      console.error("[OpenAI Vercel] Error awaiting stream.usage:", error);
     }
   }
   async completionNonStream(