/**
 * Importing npm packages
 */
import { Promisable } from 'type-fest';
import { Fn } from '../interfaces/index.js';
/**
 * Defining types
 */
export type RetryCallback = (error: unknown, attempt: number) => Promisable<unknown>;
export type RollbackFn<T> = (data: T) => Promisable<unknown>;
export type ShouldRetryFn = (error: unknown, attempt: number) => Promisable<boolean>;
/**
 * Declaring the constants
 */
export declare class Task<T> {
    private readonly fn;
    private static readonly logger;
    private taskName;
    private retries;
    private delayMs;
    private backoffFactor;
    private result?;
    private retryCallback?;
    private rollbackFn?;
    private shouldRetryFn?;
    private constructor();
    static create<T>(fn: Fn<T>): Task<T>;
    name(name: string): this;
    retry(retries: number): this;
    delay(delayMs: number): this;
    backoff(backoffFactor: number): this;
    onRetry(callback: RetryCallback): this;
    hasRollback(): boolean;
    rollback(rollbackFn: RollbackFn<T>): this;
    shouldRetry(fn: ShouldRetryFn): this;
    execute(): Promise<T>;
    executeRollback(): Promise<void>;
}