import { RuleSetRule, RuleSetUse, RuleSetUseItem } from 'webpack';
export interface CacheLoaderOptions {
    cacheContext?: string;
    cacheKey?: (options: CacheLoaderOptions, request: string) => string;
    cacheDirectory: string;
    cacheIdentifier: string;
    write?: (cacheKey: string, data: any, callback: (err: null | Error) => void) => void;
    read?: (cacheKey: string, callback: (err: null | Error, data?: any) => void) => void;
}
/**
 * Get cache-loader for caching.
 * @param options
 */
export declare function getCacheLoader(options?: true | Partial<CacheLoaderOptions>): RuleSetUseItem;
export declare type SimpleRuleSetRule = Pick<RuleSetRule, 'test' | 'include' | 'exclude'>;
export declare type RuleSetUseWithoutFunction = Exclude<RuleSetUse, Function>;
export declare type RuleSetRuleWithStrategy = SimpleRuleSetRule & {
    cacheable?: boolean | Partial<CacheLoaderOptions>;
    options?: any;
    use?: RuleSetUseWithoutFunction;
    useAppend?: RuleSetUseWithoutFunction;
    usePrepend?: RuleSetUseWithoutFunction;
};
export declare function combineRule(rule: RuleSetRuleWithStrategy, defaults: RuleSetRule & {
    use?: RuleSetUseWithoutFunction;
}): RuleSetRule;