/**
 * Time → block conversions for an auction. RPC-dependent inputs (current block, block time) are
 * passed in so this module stays pure and unit-testable.
 */
/** Block time (seconds) for a chain, falling back to {@link DEFAULT_BLOCK_TIME_SECONDS}. */
export declare function getBlockTimeSeconds(chainId: number): number;
/** Converts a future unix timestamp to a block number using the chain's block time. */
export declare function timeToBlock(targetUnix: bigint, currentBlock: bigint, nowUnix: bigint, blockTimeSeconds: number): bigint;
export interface DeriveBlocksInput {
    startTimeUnix: bigint;
    endTimeUnix: bigint;
    currentBlock: bigint;
    nowUnix: bigint;
    blockTimeSeconds: number;
    migrationDelayBlocks?: bigint;
}
export interface DerivedBlocks {
    startBlock: bigint;
    endBlock: bigint;
    claimBlock: bigint;
    migrationBlock: bigint;
}
/** Derives the auction's start / end / claim / migration blocks from its start and end times. */
export declare function deriveBlocks(input: DeriveBlocksInput): DerivedBlocks;