import { Connection, PublicKey } from "@solana/web3.js";
import type { PreflightOptions, ShieldCachePort } from "./types.js";
/**
 * Checks that run before the prover.
 *
 * Proving costs 10–30 seconds. Every check here is a single RPC call, and each
 * one pre-empts an on-chain failure whose message tells the user nothing they
 * can act on. The delegate check is the clearest example: the program requires
 * `user_token.delegate.is_none()`, so anyone who ever approved a DEX has a
 * permanently broken deposit path that reports only "Invalid token account
 * authority" — with no hint that revoking a delegate would fix it.
 *
 * These are advisory in the sense that the chain enforces them anyway. They are
 * not advisory in the sense that skipping them produces a materially worse
 * product.
 */
export declare function preflightShield(params: {
    connection: Connection;
    amount: bigint;
    mint: PublicKey;
    signer: {
        publicKey: PublicKey;
        tokenAccount: PublicKey;
    };
    programId?: PublicKey;
    options?: PreflightOptions;
    cache?: ShieldCachePort;
    computeUnitLimit?: number;
    computeUnitPriceMicroLamports?: number;
}): Promise<void>;