/**
 * Utility functions for transforming theme objects into different formats
 */
/**
 * Apply abbreviation rules to a single token-path segment. Shared by the CSS
 * var generator (`flattenObject`) and the seeds-react-system-props shim's
 * color-prop fallback, so the `--color-*` names each side produces can't drift.
 */
export declare function abbreviate(key: string): string;
/**
 * Flatten a nested object into a single-level object with kebab-case keys
 * Example: { button: { primary: { background: { base: '#fff' } } } }
 * Becomes: { 'button-primary-bg-base': '#fff' }
 */
export declare function flattenObject(obj: any, prefix?: string, separator?: string): Record<string, string>;
/**
 * Flatten colors with a 'color-' prefix for CSS variables
 */
export declare function flattenColors(colors: any): Record<string, string>;
/**
 * Flatten spacing with a 'space-' prefix
 */
export declare function flattenSpacing(space: any): Record<string, string>;
/**
 * Flatten typography values for Tailwind
 */
export declare function flattenTypography(typography: any): Record<string, [string, {
    lineHeight: string;
}]>;
/**
 * Flatten radii (border radius)
 */
export declare function flattenRadii(radii: any): Record<string, string>;
/**
 * Flatten border widths
 */
export declare function flattenBorderWidths(borderWidths: any): Record<string, string>;
/**
 * Flatten shadows
 */
export declare function flattenShadows(shadows: any): Record<string, string>;
/**
 * Flatten font weights
 */
export declare function flattenFontWeights(fontWeights: any): Record<string, string | number>;
/**
 * Flatten easing (transition timing functions)
 */
export declare function flattenEasing(easing: any): Record<string, string>;
/**
 * Flatten duration (transition durations)
 */
export declare function flattenDuration(duration: any): Record<string, string>;
/**
 * Check if a value is a valid CSS color
 * Filters out complex values like color-mix() which may not work everywhere
 */
export declare function isSimpleColor(value: string): boolean;
/**
 * Filter out colors that use advanced CSS features
 */
export declare function filterComplexColors(colors: Record<string, string>): Record<string, string>;
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