@n8n/n8n-nodes-langchain/dist/node-definitions/nodes/n8n-nodes-langchain/chainLlm/v1.ts

/**
 * Basic LLM Chain Node - Version 1
 * A simple chain to prompt a large language model
 */


export interface LcChainLlmV1Params {
/**
 * Prompt
 * @default ={{ $json.input }}
 */
    prompt?: string | Expression<string>;
/**
 * Prompt (User Message)
 * @builderHint Use expressions to include dynamic data from previous nodes (e.g., expr('{{ $json.input }}')). Static text prompts ignore incoming data.
 * @displayOptions.show { promptType: ["define"] }
 */
    text: string | Expression<string>;
  messages?: {
        /** Prompt
     */
    messageValues?: Array<{
      /** Type Name or ID
       * @default SystemMessagePromptTemplate
       */
      type?: 'AIMessagePromptTemplate' | 'SystemMessagePromptTemplate' | 'HumanMessagePromptTemplate' | Expression<string>;
      /** Message Type
       * @displayOptions.show { type: ["HumanMessagePromptTemplate"] }
       * @default text
       */
      messageType?: 'text' | 'imageBinary' | 'imageUrl' | Expression<string>;
      /** The name of the field in the chain's input that contains the binary image file to be processed
       * @displayOptions.show { messageType: ["imageBinary"] }
       * @default data
       */
      binaryImageDataKey?: string | Expression<string>;
      /** URL to the image to be processed
       * @displayOptions.show { messageType: ["imageUrl"] }
       */
      imageUrl?: string | Expression<string>;
      /** Control how the model processes the image and generates its textual understanding
       * @displayOptions.show { type: ["HumanMessagePromptTemplate"], messageType: ["imageBinary", "imageUrl"] }
       * @default auto
       */
      imageDetail?: 'auto' | 'low' | 'high' | Expression<string>;
      /** Message
       * @displayOptions.hide { messageType: ["imageBinary", "imageUrl"] }
       */
      message?: string | Expression<string>;
    }>;
  };
}

export type LcChainLlmV1Output = {
  text: string;
};

export interface LcChainLlmV1SubnodeConfig {
  model: LanguageModelInstance | LanguageModelInstance[];
  /**
   * @displayOptions.show { hasOutputParser: [true] }
   */
  outputParser?: OutputParserInstance;
}

interface LcChainLlmV1NodeBase {
  type: '@n8n/n8n-nodes-langchain.chainLlm';
  version: 1;
  isTrigger: true;
}

export type LcChainLlmV1ParamsNode = LcChainLlmV1NodeBase & {
  config: NodeConfig<LcChainLlmV1Params> & { subnodes: LcChainLlmV1SubnodeConfig };
  output?: Items<LcChainLlmV1Output>;
};

export type LcChainLlmV1Node = LcChainLlmV1ParamsNode;