import { AttributeExpressionMap } from '../attributes/attribute-map.js';
import { UpdateValues } from './index.js';

/**
 * The result object returned by the [`parseUpdate`](/api-reference/functions/parseupdate) function.
 *
 * @property updateExpression - The DynamoDB update expression string.
 * @property attributeExpressionMap - The `AttributeExpressionMap` instance containing the attribute names and values used in the update expression.
 */
type UpdateParserResult = {
    updateExpression: string;
    attributeExpressionMap: AttributeExpressionMap;
};
/**
 * Parses an update object into a DynamoDB update expression string along with an attribute expression map.
 *
 * If the secondary `attributeExpressionMap` parameter is not provided, a new instance will be created.
 * This allows for reusing an existing map when building complex expressions with other parser functions.
 *
 * @param update - The update object to parse.
 * @param attributeExpressionMap - An optional `AttributeExpressionMap` instance to use for attribute names and values.
 * @throws DocumentBuilderError if the update object is empty.
 */
declare function parseUpdate(update: UpdateValues, attributeExpressionMap?: AttributeExpressionMap): UpdateParserResult;

export { parseUpdate };
export type { UpdateParserResult };