[BUG] Type mismatch when using the example code.

[Crymzix]

Getting a type mismatch error as described in a previous issue #18 when using the basic usage code. Seems like it's not fully resolved.

Type 'BaseChatModel<BaseChatModelCallOptions, AIMessageChunk>' is not assignable to type 'BaseLanguageModelInterface<any, BaseLanguageModelCallOptions>'.
  Types of property 'generatePrompt' are incompatible.
    Type '(promptValues: BasePromptValueInterface[], options?: string[] | BaseChatModelCallOptions | undefined, callbacks?: Callbacks | undefined) => Promise<...>' is not assignable to type '(promptValues: BasePromptValueInterface[], options?: string[] | BaseLanguageModelCallOptions | undefined, callbacks?: Callbacks | undefined) => Promise<...>'.
      Types of parameters 'options' and 'options' are incompatible.
        Type 'string[] | BaseLanguageModelCallOptions | undefined' is not assignable to type 'string[] | BaseChatModelCallOptions | undefined'.
          Type 'BaseLanguageModelCallOptions' is not assignable to type 'string[] | BaseChatModelCallOptions | undefined'.
            Type 'BaseLanguageModelCallOptions' is not assignable to type 'BaseChatModelCallOptions'.
              Type 'import("/node_modules/mcp-use/node_modules/@langchain/core/dist/language_models/base").BaseLanguageModelCallOptions' is not assignable to type 'import("/node_modules/@langchain/core/dist/language_models/base").BaseLanguageModelCallOptions'.
                Types of property 'callbacks' are incompatible.
                  Type 'import("/node_modules/mcp-use/node_modules/@langchain/core/dist/callbacks/manager").Callbacks | undefined' is not assignable to type 'import("/node_modules/@langchain/core/dist/callbacks/manager").Callbacks | undefined'.
                    Type 'CallbackManager' is not assignable to type 'Callbacks | undefined'.
                      Type 'import("/node_modules/mcp-use/node_modules/@langchain/core/dist/callbacks/manager").CallbackManager' is not assignable to type 'import("/node_modules/@langchain/core/dist/callbacks/manager").CallbackManager'.
                        The types returned by 'handleLLMStart(...)' are incompatible between these types.
                          Type 'Promise<import("/node_modules/mcp-use/node_modules/@langchain/core/dist/callbacks/manager").CallbackManagerForLLMRun[]>' is not assignable to type 'Promise<import("/node_modules/@langchain/core/dist/callbacks/manager").CallbackManagerForLLMRun[]>'.
                            Type 'import("node_modules/mcp-use/node_modules/@langchain/core/dist/callbacks/manager").CallbackManagerForLLMRun[]' is not assignable to type 'import("/node_modules/@langchain/core/dist/callbacks/manager").CallbackManagerForLLMRun[]'.
                              Type 'import("/node_modules/mcp-use/node_modules/@langchain/core/dist/callbacks/manager").CallbackManagerForLLMRun' is not assignable to type 'import("/node_modules/@langchain/core/dist/callbacks/manager").CallbackManagerForLLMRun'.
                                Property 'inheritableHandlers' is protected but type 'BaseRunManager' is not a class derived from 'BaseRunManager'.ts(2322)
mcp_agent.d.ts(43, 9): The expected type comes from property 'llm' which is declared here on type '{ llm?: BaseLanguageModelInterface<any, BaseLanguageModelCallOptions> | undefined; client?: MCPClient | undefined; ... 16 more ...; baseUrl?: string | undefined; }'

// package.json
"@langchain/community": "^0.3.53",
"@langchain/core": "^0.3.72",
"@langchain/ollama": "^0.2.3",
"@langchain/openai": "^0.6.9",
"mcp-use": "^0.1.17"

Note that casting the chat model object to any works but obviously is not ideal here.

const agent = new MCPAgent({ llm: llm as any, client, maxSteps: 20 })

[Pederzh]

Hey @Crymzix!
Thank you for reporting this problem.
This is the same problem that was fixed the last time and is due to the package dependencies.
For this reason, I also installed Dependabot, which will prevent this from happening again. Hopefully.
#24

PS, it's been fixed in version 0.1.18