import { Client, QueryResult } from 'pg';
import { Mutation } from './mutation';
export interface HasHash {
    hash: string;
}
export interface MutationRow {
    identifier: string;
    hash: string;
    statements: string[];
    undo: string[];
    parents: string[];
    date_applied: Date;
    keep?: boolean;
}
export declare class MutationRunner {
    client: Client;
    testing: boolean;
    constructor(client: Client);
    query(stmt: string, args?: any): Promise<QueryResult>;
    /**
     * Fetch the hashes of the mutations we have in database.
     */
    fetchRemoteMutations(): Promise<MutationRow[]>;
    mkdct<T extends HasHash>(reg: T[]): {
        [hash: string]: T;
    };
    /**
     * Perform the mutations
     */
    mutate(_mutations: Set<Mutation>): Promise<void>;
    /**
     *
     * @param base_mutation
     */
    test(mutations: Set<Mutation>): Promise<void>;
}