/**
 * Build-time transformation utility
 */
export function buildTimeTransform(cssText: any, options?: {}): {
    nativeCSS: string;
    runtimeCSS: string;
    hasRuntimeRules: boolean;
    stats: {
        totalRules: number;
        transformedRules: any;
    };
};
/**
 * Extract @result blocks from a mixin body
 */
export function extractResultBlocks(body: any): any[];
/**
 * Find @apply rules within a rule body text.
 * Returns an array of { start, end, name, args, contentsBlock }
 */
export function findApplyRules(bodyText: any): {
    start: any;
    end: any;
    name: string;
    args: any[];
    contentsBlock: any;
}[];
/**
 * Parse CSS rules with proper handling of nested structures
 */
export function parseCSSRules(cssText: any): string[];
/**
 * Parse a @macro definition from its rule text
 * Returns { type, name, params, body } or null if invalid
 */
export function parseMacroDefinition(ruleText: any): {
    type: string;
    name: any;
    params: never[];
    body: any;
} | null;
/**
 * Parse a @mixin definition from its rule text
 * Returns { type, name, params, body, resultBlocks } or null if invalid
 */
export function parseMixinDefinition(ruleText: any): {
    type: string;
    name: any;
    params: {
        name: any;
        defaultValue: any;
    }[];
    body: any;
    resultBlocks: any[];
} | null;
/**
 * Process @apply rules within a body text, substituting mixin/macro content
 */
export function processApplyInBody(bodyText: any, definitions: any): any;
/**
 * Runtime transformation utility (for integration with the browser polyfill)
 */
export function runtimeTransform(cssText: any, element: any): {
    processedCSS: string;
    hasRuntimeRules: boolean;
    nativeCSS: string;
};
/**
 * Substitute @contents rules in body text with the provided contents block
 */
export function substituteContents(body: any, contentsBlock: any): any;
/**
 * Substitute mixin parameters into the result body.
 * Replaces var(--paramName) with the argument value or default.
 */
export function substituteParams(body: any, params: any, args: any): any;
/**
 * Transform CSS text containing @mixin/@macro/@apply into native CSS
 */
export function transformToNativeCSS(cssText: any): {
    nativeCSS: string;
    runtimeCSS: string;
    hasRuntimeRules: boolean;
    stats: {
        totalRules: number;
        transformedRules: any;
    };
};