/**
 * Style value normalizer — Spec 10.
 *
 * Normalizes raw CSS values into structured NormalizedValue objects,
 * enabling cross-mechanism comparison (CSS vs Tailwind vs inline).
 *
 * Single entry point: normalizeValue(rawValue, property).
 */
import type { NormalizedValue } from './types.js';
interface ExpandedDeclaration {
    property: string;
    rawValue: string;
    normalizedValue: NormalizedValue | null;
}
/**
 * Normalize a raw CSS value for a given property.
 * Returns null when the value cannot be normalized (e.g. dynamic expressions).
 */
export declare function normalizeValue(rawValue: string, property: string): NormalizedValue | null;
/**
 * Expand shorthand declarations into their longhand equivalents.
 * Returns the original single declaration if property isn't a shorthand
 * or the value can't be meaningfully expanded.
 *
 * @returns Array of {property, rawValue, normalizedValue} tuples.
 */
export declare function expandShorthand(property: string, rawValue: string, normalizedValue: NormalizedValue | null): ExpandedDeclaration[];
/**
 * Returns true if the property accepts color values.
 */
export declare function isColorProperty(property: string): boolean;
/**
 * Returns true if the property accepts length values.
 */
export declare function isLengthProperty(property: string): boolean;
export {};
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