import { ObservableInput, ObservedValueOf, OperatorFunction } from 'rxjs';
import { BuilderState, CacheStrategy } from '../types';
/**
 *
 * @param tag
 * @param project
 * @param skipIf
 * @param cacheStrategy
 */
export declare function runBuild<T, O extends ObservableInput<any>>(tag: string, project: (value: T, index: number) => O, cacheStrategy?: CacheStrategy<any, ObservedValueOf<O>>): OperatorFunction<T, BuilderState<ObservedValueOf<O>>>;