@neabyte/chart-to-image/dist/core/comparison.d.ts

Convert trading charts to images using Node.js canvas with advanced features: 6 chart types, VWAP/EMA/SMA indicators, custom colors, themes, hide elements, scaling, and PNG/JPEG export formats.

import { type ComparisonLayout } from '../renderer/comparison.js';
export interface ComparisonConfig {
    symbols: string[];
    timeframe?: string;
    timeframes?: string[];
    exchange?: string;
    layout?: ComparisonLayout;
    width?: number;
    height?: number;
    theme?: 'light' | 'dark';
    chartType?: string;
    showVWAP?: boolean;
    showEMA?: boolean;
    emaPeriod?: number;
    showSMA?: boolean;
    smaPeriod?: number;
    showBollingerBands?: boolean;
    bbPeriod?: number;
    bbStandardDeviations?: number;
    bbColors?: {
        upper?: string;
        middle?: string;
        lower?: string;
        background?: string;
        backgroundOpacity?: number;
    };
    outputPath?: string;
    customBarColors?: {
        bullish?: string;
        bearish?: string;
        wick?: string;
        border?: string;
    };
}
export interface ComparisonResult {
    success: boolean;
    outputPath?: string;
    error?: string;
    buffer?: Buffer;
}
export declare class ComparisonService {
    private static readonly DEFAULT_LAYOUT_TYPE;
    private config;
    private dataProvider;
    constructor(config: ComparisonConfig);
    generateComparison(): Promise<ComparisonResult>;
    private addChartsToRenderer;
    private addTimeframeCharts;
    private addSymbolCharts;
    private createSuccessResult;
    private createErrorResult;
    private generateChartData;
    private createChartData;
    static sideBySide(symbols: string[], outputPath: string, config?: Partial<ComparisonConfig>): Promise<ComparisonResult>;
    static grid(symbols: string[], columns: number, outputPath: string, config?: Partial<ComparisonConfig>): Promise<ComparisonResult>;
    static timeframeComparison(symbol: string, timeframes: string[], outputPath: string, config?: Partial<ComparisonConfig>): Promise<ComparisonResult>;
}