import * as d3 from 'd3';
import { ChartBounds, ChartMode, DataRepresentation, MultiDatasetFormat, ProcessedDataPoint, RawChartData } from '@/types';
/**
 * Data processor that transforms Kendo UI format to D3-compatible format
 */
export declare class DataProcessor {
    /**
     * Extract specific dataset from multi-dataset format based on mode and representation
     */
    static extractDatasetFromMulti(multiData: MultiDatasetFormat, mode: ChartMode, representation: DataRepresentation): RawChartData;
    /**
     * Transform raw Kendo data format to D3-ready data structure
     */
    static transformKendoToD3(rawData: RawChartData): {
        data: ProcessedDataPoint[];
        energySources: string[];
        years: number[];
    };
    /**
     * Create stacked data using D3 stack layout
     */
    static createStackedData(data: ProcessedDataPoint[], energySources: string[]): d3.Series<ProcessedDataPoint, string>[];
    /**
     * Calculate domains for scales
     */
    static calculateDomains(data: ProcessedDataPoint[], energySources: string[]): {
        xDomain: [number, number];
        yDomain: [number, number];
    };
    /**
     * Calculate chart bounds based on dimensions and margins
     */
    static calculateBounds(width: number, height: number, margin: {
        top: number;
        right: number;
        bottom: number;
        left: number;
    }): ChartBounds;
    /**
     * Get data point value at specific coordinates
     */
    static getDataAtPoint(data: ProcessedDataPoint[], year: number, energySource: string): number;
    /**
     * Find closest data point to given year
     */
    static findClosestDataPoint(data: ProcessedDataPoint[], targetYear: number): ProcessedDataPoint | null;
    /**
     * Extract color information from raw data
     */
    static extractColors(rawData: RawChartData): Record<string, string>;
    /**
     * Validate processed data integrity
     */
    static validateProcessedData(data: ProcessedDataPoint[], energySources: string[]): boolean;
}
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