/**
 * Tailwind utility class expander — Spec 10.
 *
 * Expands Tailwind utility classes into normalized CSS declarations.
 * Uses design tokens from the config loader for value resolution.
 *
 * Three-tier resolution for values:
 *   1. Arbitrary values: mt-[17px] → margin-top: 17px
 *   2. Theme tokens: bg-blue-500 → background-color: #3b82f6
 *   3. Fixed scale: rounded-lg → border-radius: 8px
 */
import type { NormalizedDeclaration } from './types.js';
import type { TailwindThemeTokens } from './tailwindConfigLoader.js';
/**
 * Expand a single Tailwind utility class into normalized declarations.
 *
 * @param className - The utility class (e.g. "bg-blue-500", "mt-4", "hover:bg-red-500")
 * @param tokens - Theme tokens from config loader (or defaults)
 * @param filePath - Source file path (for the declaration)
 * @param line - Line number (for the declaration)
 * @returns Array of NormalizedDeclaration, or empty if the class can't be expanded.
 */
export declare function expandUtility(className: string, tokens: TailwindThemeTokens, filePath: string, line: number): NormalizedDeclaration[];
/**
 * Expand variant-prefixed declarations by applying variantContext.
 * This is a convenience wrapper that first expands the utility, then
 * applies the variant context.
 *
 * @param variantPrefix - e.g. "hover", "sm:dark"
 * @param declarations - Declarations to apply the variant to
 */
export declare function expandVariant(variantPrefix: string, declarations: NormalizedDeclaration[]): NormalizedDeclaration[];
/**
 * Heuristic check: does this class name look like a Tailwind utility?
 * Used to skip non-utility class names without attempting expansion.
 */
export declare function looksLikeTailwind(className: string): boolean;
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