export declare function resolveViteCssTaskConcurrency(_useIncrementalMode: boolean, _majorVersion?: number | undefined): number;
export declare function normalizeViteCssCacheKey(file: string): string;
export declare function rememberLastCssResult(resultByFile: Map<string, string>, sourceHashByFile: Map<string, string>, file: string, css: string, sourceHash: string): void;
export declare function getLastCssResult(resultByFile: Map<string, string>, ...files: Array<string | undefined>): string | undefined;
export declare function getLastCssSourceHash(sourceHashByFile: Map<string, string>, file: string): string | undefined;
export declare function pruneLastCssResults(resultByFile: Map<string, string>, sourceHashByFile: Map<string, string>, activeFiles: Set<string>): void;