import type { ActiveCommitterInfo, NetworkConfig, ValidatorRoles, ValidatorSet } from './types/index.js';
/**
 * Deterministically assign aggregator and committer roles for an epoch.
 *
 * For each role slot the algorithm hashes ("ROLE"|headerHash|i), derives a
 * start index into the validator list, then performs a linear probe to find
 * the first unoccupied validator (wrap-around).
 *
 * All returned indices reference `validatorSet.validators`.
 */
export declare const getValidatorRoles: (validatorSet: ValidatorSet, config: NetworkConfig) => ValidatorRoles;
/**
 * Determine the currently active committer based on round-robin time slots.
 *
 * Pure function — no RPC calls. All returned indices reference
 * `validatorSet.validators`.
 *
 * @returns `null` when `currentTime < captureTimestamp` (epoch not started).
 */
export declare const getActiveCommitter: (params: {
    committerIndices: number[];
    captureTimestamp: number;
    currentTime: number;
    committerSlotDuration: number;
    graceSeconds?: number;
}) => ActiveCommitterInfo | null;
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