/** Dependencies */
import { NodeBlock, Slots } from "tripetto-runner-foundation";
import "./condition";
export declare abstract class URL extends NodeBlock {
    /** Contains the URL slot with the value. */
    readonly urlSlot: import("tripetto-runner-foundation").Value<
        string,
        Slots.String
    >;
    /** Contains if the block is required. */
    readonly required: boolean;
    validate(): boolean;
}