Small tweak

Author: cte

src/api/transform/gemini-format.ts

@@ -24,7 +24,7 @@ function convertAnthropicContentToGemini(content: string | Anthropic.ContentBloc
 					},
 				}
 			case "tool_result": {
-				if (!block.content) {
+				if (!block.content || !Array.isArray(block.content)) {
 					return []
 				}
 
@@ -37,36 +37,37 @@ function convertAnthropicContentToGemini(content: string | Anthropic.ContentBloc
 					}
 				}
 
-				if (Array.isArray(block.content)) {
-					const textParts: string[] = []
-					const imageParts: Part[] = []
+				if (!Array.isArray(block.content)) {
+					return []
+				}
 
-					block.content.forEach((item) => {
-						if (item.type === "text") {
-							textParts.push(item.text)
-						} else if (item.type === "image") {
-							if (item.source.type === "base64") {
-								imageParts.push({
-									inlineData: { data: item.source.data, mimeType: item.source.media_type },
-								})
-							}
-						}
-					})
+				const textParts: string[] = []
+				const imageParts: Part[] = []
 
-					// Create content text with a note about images if present
-					const contentText =
-						textParts.join("\n\n") + (imageParts.length > 0 ? "\n\n(See next part for image)" : "")
+				block.content.forEach((item) => {
+					if (item.type === "text") {
+						textParts.push(item.text)
+					} else if (item.type === "image") {
+						if (item.source.type === "base64") {
+							imageParts.push({
+								inlineData: { data: item.source.data, mimeType: item.source.media_type },
+							})
+						}
+					}
+				})
 
-					// Return function response followed by any images
-					return [
-						{ functionResponse: { name: toolName, response: { name: toolName, content: contentText } } },
-						...imageParts,
-					]
-				}
+				// Create content text with a note about images if present
+				const contentText =
+					textParts.join("\n\n") + (imageParts.length > 0 ? "\n\n(See next part for image)" : "")
 
-				return []
+				// Return function response followed by any images
+				return [
+					{ functionResponse: { name: toolName, response: { name: toolName, content: contentText } } },
+					...imageParts,
+				]
 			}
 			default:
+				// Currently unsupported: "thinking" | "redacted_thinking" | "document"
 				throw new Error(`Unsupported content block type: ${block.type}`)
 		}
 	})