feat(providers): add anthropic

src/lib/providers/anthropic.ts

@@ -0,0 +1,39 @@
+import { ChatAnthropic } from '@langchain/anthropic';
+import { getAnthropicApiKey } from '../../config';
+import logger from '../../utils/logger';
+
+export const loadAnthropicChatModels = async () => {
+  const anthropicApiKey = getAnthropicApiKey();
+
+  if (!anthropicApiKey) return {};
+
+  try {
+    const chatModels = {
+      'Claude 3.5 Sonnet': new ChatAnthropic({
+        temperature: 0.7,
+        anthropicApiKey: anthropicApiKey,
+        model: 'claude-3-5-sonnet-20240620',
+      }),
+      'Claude 3 Opus': new ChatAnthropic({
+        temperature: 0.7,
+        anthropicApiKey: anthropicApiKey,
+        model: 'claude-3-opus-20240229',
+      }),
+      'Claude 3 Sonnet': new ChatAnthropic({
+        temperature: 0.7,
+        anthropicApiKey: anthropicApiKey,
+        model: 'claude-3-sonnet-20240229',
+      }),
+      'Claude 3 Haiku': new ChatAnthropic({
+        temperature: 0.7,
+        anthropicApiKey: anthropicApiKey,
+        model: 'claude-3-haiku-20240307',
+      }),
+    };
+
+    return chatModels;
+  } catch (err) {
+    logger.error(`Error loading Anthropic models: ${err}`);
+    return {};
+  }
+};