/**
 * CSS utility functions for style property transformation.
 *
 * This module handles camelCase to kebab-case conversion and automatic
 * px unit conversion for numeric CSS values, making Crank more React-compatible.
 */
/**
 * Converts camelCase CSS property names to kebab-case.
 * Handles vendor prefixes correctly (WebkitTransform -> -webkit-transform).
 */
export declare function camelToKebabCase(str: string): string;
/**
 * CSS properties that should remain unitless when given numeric values.
 * Based on React's list of unitless properties.
 */
export declare const UNITLESS_PROPERTIES: Set<string>;
/**
 * Formats CSS property values, automatically adding "px" to numeric values
 * for properties that are not unitless.
 */
export declare function formatStyleValue(name: string, value: unknown): string;