import type { CSSProperties } from 'react';
/**
 * Create a Base64 encoded SVG mask for smooth corners
 * @param options - Configuration options
 */
export declare const createSmoothCornersMask: (options?: {
    cornerValue?: number;
    size?: number;
}) => string;
/**
 * Create a Base64 encoded SVG mask for circle shape
 * @param options - Configuration options
 */
export declare const createCircleMask: (options?: {
    size?: number;
}) => string;
/**
 * Create a Base64 encoded SVG mask for rounded rectangle
 * @param options - Configuration options
 */
export declare const createRoundedRectMask: (options?: {
    borderRadius?: number;
    size?: number;
}) => string;
/**
 * Predefined smooth corners masks for common corner values
 */
export declare const SMOOTH_CORNER_MASKS: {
    readonly circle: string;
    readonly ios: string;
    readonly sharp: string;
    readonly smooth: string;
    readonly square: string;
    readonly squircle: string;
};
/**
 * CSS helper to apply smooth corners mask
 */
export declare const getSmoothCornersMaskStyle: (cornerType?: keyof typeof SMOOTH_CORNER_MASKS) => CSSProperties;