import "../_dnt.polyfills.js";
import { BlockRune } from "./BlockRune.js";
import { Chain } from "./ChainRune.js";
import { PatternRune } from "./PatternRune.js";
export declare class BlockHashRune<out C extends Chain, out U> extends PatternRune<string, C, U> {
    block(): BlockRune<C, import("../mod.js").ConnectionError | import("../mod.js").ServerError | U | import("../rune/Rune.js").Rune.U<this> | null>;
}