import { ChartSettings } from '../../../config/ChartSettings';
import { MultiChartData, ChartData } from '../../../types';
export declare function determineChartType(data: MultiChartData): string;
/**
 * Generates the [METADATA] section of the chart output.
 * @param settings The chart settings.
 * @param chartType A string describing the type of chart (e.g., "natal", "synastry").
 * @param houseSystemName Optional: The name of the house system used.
 * @returns An array of strings, each representing a line in the output.
 */
export declare function generateMetadataOutput(settings: ChartSettings, chartType: string, houseSystemName?: string, compositeSource?: ChartData['compositeSource']): string[];