import { DocumentClient } from 'aws-sdk/clients/dynamodb';
export declare class DynamodbUtils {
    convertDbItemToDto<T>(item: DocumentClient.AttributeMap, dbToDtoNameMapping: {
        [key: string]: string;
    }, attributesToDelete?: string[]): T;
    /**
     *
     * @param params This is the QueryInput parameter that will be populated with the provided arguments
     * @param timestampFilter
     * @param filter
     * @param nextToken
     */
    prepareMultiQueryParams(queryInput: DocumentClient.QueryInput, type: string, timestampFilter: string, nextToken?: DocumentClient.Key, filter?: string): DocumentClient.QueryInput;
    convertTimestampFilter: (filter: string, type: string) => DocumentClient.QueryInput;
    /**
     * create a last year time window if the request doesn't have timestamp in the filter
     */
    createLastYearQuery: () => string;
}