/**
 * Configuration loader for BCKB MCP server
 * Supports multiple configuration sources with precedence order
 */
import { ConfigurationLoadResult } from '../types/config-types.js';
export declare class ConfigurationLoader {
    private readonly CONFIG_PATHS;
    loadConfiguration(): Promise<ConfigurationLoadResult>;
    private loadFromFiles;
    private loadFromFile;
    private loadFromEnvironment;
    private parseEnvironmentValue;
    private setNestedValue;
    private mergeConfigurations;
    private applyEnvironmentOverrides;
    private validateConfiguration;
    private getFileFormat;
    private getFilePriority;
    private deepClone;
}
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