import type { Rule } from 'webpack-chain';
import type { Saber } from '.';
export declare class WebpackUtils {
    api: Saber;
    constructor(api: Saber);
    get shouldCache(): boolean;
    getCacheOptions(loader: string, obj: object): {
        cacheDirectory: string;
        cacheIdentifier: string;
    } | {
        cacheDirectory?: undefined;
        cacheIdentifier?: undefined;
    };
    addCacheSupport(rule: Rule, loader: string, obj: object): void;
}