export interface FallbackStrategy {
    feature: string;
    fallbacks: Array<{
        condition: () => boolean;
        implementation: string;
        quality: 'native' | 'polyfill' | 'graceful' | 'minimal';
    }>;
}
/**
 * Manages fallbacks for features with limited or inconsistent browser support.
 */
export declare class FeatureFallbackManager {
    private versionManager;
    private strategies;
    getBestFallback(feature: string): {
        implementation: string;
        quality: string;
    } | null;
    getFeatureReport(): Record<string, {
        available: string;
        quality: string;
    }>;
    /**
     * Generates CSS with automatic fallbacks based on browser support.
     */
    generateFallbackCSS(feature: string, nativeCSS: string, fallbackCSS: string): string;
    /**
     * Applies specific strategies for Houdini Paint worklets.
     */
    getHoudiniPaintFallback(paintName: string): string;
}
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