import { UpdateItemInput } from 'aws-sdk/clients/dynamodb';
import { ConditionalParams } from '../operation-params.type';
import { Expression } from './type';
export declare function addUpdateExpression(updateExpression: Expression, params: UpdateItemInput): void;
export declare function addExpression(expressionType: 'ConditionExpression' | 'KeyConditionExpression' | 'FilterExpression' | 'UpdateExpression', condition: Expression, params: ConditionalParams): void;
