From a5ed4076b781e1af65e1962feffc49ed828e20e3 Mon Sep 17 00:00:00 2001
From: ztimson <zaktimson@gmail.com>
Date: Tue, 16 Dec 2025 12:22:14 -0500
Subject: [PATCH] Handle anthropic multiple responses better.

---
 package.json     |  2 +-
 src/antrhopic.ts | 38 +++++++++++++++++++++++---------------
 2 files changed, 24 insertions(+), 16 deletions(-)

diff --git a/package.json b/package.json
index 4339b64..2c91622 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@ztimson/ai-utils",
-	"version": "0.1.15",
+	"version": "0.1.16",
 	"description": "AI Utility library",
 	"author": "Zak Timson",
 	"license": "MIT",
diff --git a/src/antrhopic.ts b/src/antrhopic.ts
index 5e2ba22..71907f1 100644
--- a/src/antrhopic.ts
+++ b/src/antrhopic.ts
@@ -13,24 +13,29 @@ export class Anthropic extends LLMProvider {
 	}
 
 	private toStandard(history: any[]): LLMMessage[] {
+		const merged: any[] = [];
 		for(let i = 0; i < history.length; i++) {
-			const orgI = i;
-			if(typeof history[orgI].content != 'string') {
-				if(history[orgI].role == 'assistant') {
-					history[orgI].content.filter((c: any) => c.type =='tool_use').forEach((c: any) => {
-						i++;
-						history.splice(i, 0, {role: 'tool', id: c.id, name: c.name, args: c.input});
+			const msg = history[i];
+			if(typeof msg.content != 'string') {
+				if(msg.role == 'assistant') {
+					msg.content.filter((c: any) => c.type == 'tool_use').forEach((c: any) => {
+						merged.push({role: 'tool', id: c.id, name: c.name, args: c.input});
 					});
-				} else if(history[orgI].role == 'user') {
-					history[orgI].content.filter((c: any) => c.type =='tool_result').forEach((c: any) => {
-						const h = history.find((h: any) => h.id == c.tool_use_id);
-						h[c.is_error ? 'error' : 'content'] = c.content;
+				} else if(msg.role == 'user') {
+					msg.content.filter((c: any) => c.type == 'tool_result').forEach((c: any) => {
+						const h = merged.find((h: any) => h.id == c.tool_use_id);
+						if(h) h[c.is_error ? 'error' : 'content'] = c.content;
 					});
 				}
-				history[orgI].content = history[orgI].content.filter((c: any) => c.type == 'text').map((c: any) => c.text).join('\n\n');
+				msg.content = msg.content.filter((c: any) => c.type == 'text').map((c: any) => c.text).join('\n\n');
+			}
+			if(msg.content) {
+				const last = merged.at(-1);
+				if(last && last.role == 'assistant' && msg.role == 'assistant') last.content += '\n\n' + msg.content;
+				else merged.push({role: msg.role, content: msg.content});
 			}
 		}
-		return history.filter(h => !!h.content);
+		return merged;
 	}
 
 	private fromStandard(history: LLMMessage[]): any[] {
@@ -71,13 +76,15 @@ export class Anthropic extends LLMProvider {
 				stream: !!options.stream,
 			};
 
-			// Run tool changes
 			let resp: any;
+			let isFirstMessage = true;
 			do {
 				resp = await this.client.messages.create(requestParams);
 
-				// Streaming mode
 				if(options.stream) {
+					if(!isFirstMessage) options.stream({text: '\n\n'});
+					isFirstMessage = false;
+
 					resp.content = [];
 					for await (const chunk of resp) {
 						if(controller.signal.aborted) break;
@@ -104,7 +111,6 @@ export class Anthropic extends LLMProvider {
 					}
 				}
 
-				// Run tools
 				const toolCalls = resp.content.filter((c: any) => c.type === 'tool_use');
 				if(toolCalls.length && !controller.signal.aborted) {
 					history.push({role: 'assistant', content: resp.content});
@@ -122,12 +128,14 @@ export class Anthropic extends LLMProvider {
 					requestParams.messages = history;
 				}
 			} while (!controller.signal.aborted && resp.content.some((c: any) => c.type === 'tool_use'));
+
 			if(options.stream) options.stream({done: true});
 			res(this.toStandard([...history, {
 				role: 'assistant',
 				content: resp.content.filter((c: any) => c.type == 'text').map((c: any) => c.text).join('\n\n')
 			}]));
 		});
+
 		return Object.assign(response, {abort: () => controller.abort()});
 	}
 }