import { PromptTemplate } from '@langchain/core/prompts';
import { IVisualizer } from '../types';
import { LLMProvider } from '../../../types';
import { AnyObject } from '@loopback/repository';
import { VisualizationGraphState } from '../state';
import z from 'zod';
export declare class BarVisualizer implements IVisualizer {
    private readonly llm;
    name: string;
    description: string;
    renderPrompt: PromptTemplate<import("@langchain/core/prompts").ParamsFromFString<"\n<instructions>\nYou are an expert data visualization assistant. Your task is to create a bar chart config based on the provided SQL query, it's description and user prompt. Follow these steps:\n1. Analyze the SQL query results to understand the data structure.\n2. Identify the category column (x-axis) and value column (y-axis) for the bar chart.\n3. Create a configuration object for the bar chart using the identified columns.\n4. Return the bar chart configuration object.\n</instructions>\n<inputs>\n<sql>\n{sql}\n</sql>\n<description>\n{description}\n</description>\n<user-prompt>\n{userPrompt}\n</user-prompt>\n</inputs>">, any>;
    context?: string | undefined;
    schema: z.AnyZodObject;
    constructor(llm: LLMProvider);
    getConfig(state: VisualizationGraphState): Promise<AnyObject>;
}