import type { AckCommitsEvent, Commit } from './types';
export declare type CommitValidation<CommitMetadata, Delta> = {
    newCommits: readonly Commit<CommitMetadata, Delta>[];
    invalidRefs: Set<string>;
    referencedCommits: Set<string>;
};
export declare function validateCommitOrder<CommitMetadata, Delta>(commits: readonly Commit<CommitMetadata, Delta>[]): CommitValidation<CommitMetadata, Delta>;
export declare function addInvalidRefsToAckEvent(ack: AckCommitsEvent, invalidRefs: Set<string>): AckCommitsEvent;