/**
 * Visual testing utilities for screenshot comparison and UI testing
 */
export type VisualTestConfig = {
    threshold: number;
    diffColor: [number, number, number];
    baselineDir: string;
    diffDir: string;
    updateBaselines: boolean;
};
export type VisualTestResult = {
    testName: string;
    passed: boolean;
    similarity: number;
    diffPixels: number;
    baselinePath?: string;
    actualPath: string;
    diffPath?: string;
    error?: string;
};
export declare class VisualTester {
    private readonly config;
    constructor(config?: Partial<VisualTestConfig>);
    private performImageComparison;
    private handleMissingBaseline;
    compareScreenshots(testName: string, actualBuffer: Buffer, baselineName?: string): Promise<VisualTestResult>;
    compareHTML(testName: string, actualHTML: string, baselineName?: string): Promise<VisualTestResult>;
    private calculateTextSimilarity;
    private levenshteinDistance;
}
export declare class VisualTestReporter {
    private readonly results;
    addResult(result: VisualTestResult): void;
    getSummary(): {
        total: number;
        passed: number;
        failed: number;
        passRate: number;
        results: VisualTestResult[];
    };
    generateReport(): string;
}
export declare const visualTester: VisualTester;
export declare const visualReporter: VisualTestReporter;
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