fix(Anthropic Chat Model Node): Fix detection of chat models in docke…

…r build & add support Claude Haiku (#8953)

Signed-off-by: Oleg Ivaniv <me@olegivaniv.com>
Co-authored-by: Michael Kret <michael.k@radency.com>

packages/@n8n/nodes-langchain/nodes/llms/LMChatAnthropic/LmChatAnthropic.node.ts

@@ -26,6 +26,10 @@ const modelField: INodeProperties = {
 			name: 'Claude 3 Sonnet(20240229)',
 			value: 'claude-3-sonnet-20240229',
 		},
+		{
+			name: 'Claude 3 Haiku(20240307)',
+			value: 'claude-3-haiku-20240307',
+		},
 		{
 			name: 'LEGACY: Claude 2',
 			value: 'claude-2',

packages/@n8n/nodes-langchain/utils/helpers.ts

@@ -1,9 +1,10 @@
 import { NodeConnectionType, NodeOperationError, jsonStringify } from 'n8n-workflow';
 import type { EventNamesAiNodesType, IDataObject, IExecuteFunctions } from 'n8n-workflow';
-import { BaseChatModel } from '@langchain/core/language_models/chat_models';
+import type { BaseChatModel } from '@langchain/core/language_models/chat_models';
 import type { BaseOutputParser } from '@langchain/core/output_parsers';
 import type { BaseMessage } from '@langchain/core/messages';
 import { DynamicTool, type Tool } from '@langchain/core/tools';
+import type { BaseLLM } from '@langchain/core/language_models/llms';
 
 export function getMetadataFiltersValues(
 	ctx: IExecuteFunctions,
@@ -20,10 +21,10 @@ export function getMetadataFiltersValues(
 	return undefined;
 }
 
-// TODO: Remove this function once langchain package is updated to 0.1.x
-// eslint-disable-next-line @typescript-eslint/no-duplicate-type-constituents
-export function isChatInstance(model: any): model is BaseChatModel {
-	return model instanceof BaseChatModel;
+export function isChatInstance(model: unknown): model is BaseChatModel {
+	const namespace = (model as BaseLLM | BaseChatModel).lc_namespace;
+
+	return namespace.includes('chat_models');
 }
 
 export async function getOptionalOutputParsers(