import type { DynamoAttrResult } from './types.js';
/**
 * Builder for constructing DynamoDB expression attribute name and value maps.
 * Handles the conversion of attribute paths to placeholder tokens and values to marshalled format.
 */
export declare class AttributeMapBuilder {
    #private;
    /**
     * Creates a new AttributeMapBuilder with the specified prefix.
     *
     * @param prefix - Prefix for generated attribute placeholders (u_ for update, cf_ for condition/filter, k_ for key)
     */
    constructor(prefix: `${'u' | 'cf' | 'k'}_`);
    /**
     * Converts an attribute path to a placeholder reference.
     * Handles dot notation and bracket notation for nested paths.
     *
     * @param key - The attribute path (e.g., "user.name" or "items[0].id")
     * @returns The placeholder reference string
     */
    attr(key: string): string;
    /**
     * Registers a value and returns its placeholder reference.
     *
     * @param value - The value to register
     * @returns The placeholder reference string (e.g., ":u_value_1")
     */
    value(value: unknown): string;
    /**
     * Builds and returns the final attribute maps.
     *
     * @returns The DynamoAttrResult containing both name and value maps
     */
    build(): DynamoAttrResult;
    /**
     * Merges multiple attribute results into a single result.
     *
     * @param attrResults - Array of DynamoAttrResult objects to merge
     * @returns A single merged DynamoAttrResult
     */
    static mergeAttrResults: (attrResults: DynamoAttrResult[]) => DynamoAttrResult;
}
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