import type { CssRule } from 'assetgraph';
type CssRuleLike = CssRule;
interface CssAssetLike {
    eachRuleInParseTree(visit: (rule: CssRuleLike) => void): void;
}
declare function findCustomPropertyDefinitions(cssAssets: CssAssetLike[]): Record<string, Set<CssRuleLike>>;
export = findCustomPropertyDefinitions;
//# sourceMappingURL=findCustomPropertyDefinitions.d.ts.map