import { DocumentClient } from 'aws-sdk/clients/dynamodb';
import type { NaturalNumber } from "../../../CustomTypes/Numerics";
import type { Logger } from "../../../Logging";
declare type BatchGetResponseMap = DocumentClient.BatchGetResponseMap;
declare type MillisecondsDuration = NaturalNumber;
export declare type Delay = (retriesCount: NaturalNumber | 0) => MillisecondsDuration;
export declare function exponentialDelay(factor?: NaturalNumber): Delay;
export interface BatchOperationParams {
    /** The document-client instance to use */
    documentClient?: DocumentClient;
    /**
     * An optional function to calculate delays between requests of unprocessed
     * requests
     */
    nextDelay?: Delay;
    /**
     * An optional value that determines how many retries would
         * be performed if some items cannot be processed
     */
    maxRetriesCount?: NaturalNumber | 0;
    logger?: Logger;
}
export interface BatchReadParams extends BatchOperationParams {
    /** The batch read parameters */
    batchRead: DocumentClient.BatchGetItemInput;
}
/**
 * Perform a batch get while continuously trying to get unprocessed keys
 * @returns A promise that is resolved with all the items specified by the batch-read request
 */
export declare function batchRead({ documentClient, batchRead, nextDelay, maxRetriesCount, logger, }: BatchReadParams): Promise<BatchGetResponseMap>;
export interface BatchWriteParams extends BatchOperationParams {
    /** The batch write parameters */
    batchWrite: DocumentClient.BatchWriteItemInput;
}
/**
 * Perform a batch write while continuously trying to write unprocessed items
 * @returns A promise that is resolved when all items have been written to the table
 */
export declare function batchWrite({ documentClient, batchWrite, nextDelay, maxRetriesCount, logger, }: BatchWriteParams): Promise<void>;
export interface QueryAndDeleteParams<QueryKey extends string> extends BatchOperationParams {
    /** The name of the DynamoDB table to query and delete items from */
    tableName: string;
    /**
     * A query which is an object containing a single key: the table's PK and an array
     * of values to match
     */
    query: {
        [K in QueryKey]: any[];
    };
    /** An index to use when querying */
    indexName?: string;
    /** The PK name if it is different than the query key */
    pk?: string;
    /** The name of the sort key attribute of the table */
    sk?: string;
}
/**
 * Perform queries using specified key, values and optional index, then delete the
 * selected records
 * @returns A promise that is resolved with the count of deleted records
 */
export declare function queryAndDelete<QueryKey extends string>({ tableName, query, indexName, pk, sk, documentClient, logger, ...options }: QueryAndDeleteParams<QueryKey>): Promise<number>;
export {};