import { UTxO } from "../types/transaction";
/**
 * The theoretical maximum collateral amount that would be needed currently
 * ```
 *   max_fee = (max_mem_units * memory_price) + (max_cpu_units * cpu_price) +
 *             (max_tx_size * fee_per_byte) + base_fee
 * ```
 * The collateral needs to be 150% of the fee
 * max_collateral > max_fee * 1.5
 */
export declare const MAX_COLLATERAL_AMOUNT = 5000000;
export declare const MIN_RECOMMENDED_COLLATERAL_AMOUNT = 3000000;
export declare const MAX_COLLATERAL_COUNT = 3;
export declare const isAdaOnlyUtxo: (utxo: UTxO) => boolean;
export declare const isPotentialCollateral: (utxo: UTxO) => boolean;
export declare const isCustomCollateral: (minCollateralAmount: number) => (utxo: UTxO) => boolean;
export declare const isRecommendedCollateral: (utxo: UTxO) => boolean;
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