remove as any in gemini openai adapter

Author: uinstinct

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

@@ -44,6 +44,24 @@ type UsageInfo = Pick<
   "total_tokens" | "completion_tokens" | "prompt_tokens"
 >;
 
+interface GeminiToolCall
+  extends OpenAI.Chat.Completions.ChatCompletionMessageFunctionToolCall {
+  extra_content?: {
+    google?: {
+      thought_signature?: string;
+    };
+  };
+}
+
+interface GeminiToolDelta
+  extends OpenAI.Chat.Completions.ChatCompletionChunk.Choice.Delta {
+  extra_content?: {
+    google?: {
+      thought_signature?: string;
+    };
+  };
+}
+
 export class GeminiApi implements BaseLlmApi {
   apiBase: string = "https://generativelanguage.googleapis.com/v1beta/";
 
@@ -143,41 +161,43 @@ export class GeminiApi implements BaseLlmApi {
 
           return {
             role: "model" as const,
-            parts: msg.tool_calls.map((toolCall, index) => {
-              if (toolCall.type === "function" && "function" in toolCall) {
-                let thoughtSignature: string | undefined;
-                if (index === 0) {
-                  const rawSignature = (toolCall as any)?.extra_content?.google
-                    ?.thought_signature;
-
-                  if (
-                    typeof rawSignature === "string" &&
-                    rawSignature.length > 0
-                  ) {
-                    thoughtSignature = rawSignature;
-                  } else {
-                    // Fallback per https://ai.google.dev/gemini-api/docs/thought-signatures
-                    // for histories that were not generated by Gemini or are missing signatures.
-                    thoughtSignature = "skip_thought_signature_validator";
+            parts: (msg.tool_calls as GeminiToolCall[]).map(
+              (toolCall, index) => {
+                if (toolCall.type === "function" && "function" in toolCall) {
+                  let thoughtSignature: string | undefined;
+                  if (index === 0) {
+                    const rawSignature =
+                      toolCall?.extra_content?.google?.thought_signature;
+
+                    if (
+                      typeof rawSignature === "string" &&
+                      rawSignature.length > 0
+                    ) {
+                      thoughtSignature = rawSignature;
+                    } else {
+                      // Fallback per https://ai.google.dev/gemini-api/docs/thought-signatures
+                      // for histories that were not generated by Gemini or are missing signatures.
+                      thoughtSignature = "skip_thought_signature_validator";
+                    }
                   }
-                }
 
-                return {
-                  functionCall: {
-                    id: includeToolCallIds ? toolCall.id : undefined,
-                    name: toolCall.function.name,
-                    args: safeParseArgs(
-                      toolCall.function.arguments,
-                      `Call: ${toolCall.function.name} ${toolCall.id}`,
-                    ),
-                  },
-                  ...(thoughtSignature && { thoughtSignature }),
-                };
-              }
-              throw new Error(
-                `Unsupported tool call type in Gemini: ${toolCall.type}`,
-              );
-            }),
+                  return {
+                    functionCall: {
+                      id: includeToolCallIds ? toolCall.id : undefined,
+                      name: toolCall.function.name,
+                      args: safeParseArgs(
+                        toolCall.function.arguments,
+                        `Call: ${toolCall.function.name} ${toolCall.id}`,
+                      ),
+                    },
+                    ...(thoughtSignature && { thoughtSignature }),
+                  };
+                }
+                throw new Error(
+                  `Unsupported tool call type in Gemini: ${toolCall.type}`,
+                );
+              },
+            ),
           };
         }
 
@@ -344,7 +364,7 @@ export class GeminiApi implements BaseLlmApi {
         if (contentParts) {
           for (const part of contentParts) {
             if ("text" in part) {
-              const thoughtSignature = (part as any)?.thoughtSignature;
+              const thoughtSignature = part?.thoughtSignature;
               if (thoughtSignature) {
                 yield chatChunkFromDelta({
                   model,
@@ -355,7 +375,7 @@ export class GeminiApi implements BaseLlmApi {
                         thought_signature: thoughtSignature,
                       },
                     },
-                  } as any,
+                  } as GeminiToolDelta,
                 });
               }
 
@@ -364,7 +384,7 @@ export class GeminiApi implements BaseLlmApi {
                 model,
               });
             } else if ("functionCall" in part) {
-              const thoughtSignature = (part as any)?.thoughtSignature;
+              const thoughtSignature = part?.thoughtSignature;
               yield chatChunkFromDelta({
                 model,
                 delta: {