/**
 * MailDev Configuration Merger
 *
 * Merges configuration from multiple sources with proper priority:
 * CLI args (highest) > Environment vars > Config file > Defaults (lowest)
 */
import type { MailDevConfig, CLIOptions } from './types.js';
/**
 * Resolve complete configuration from all sources
 *
 * Priority: CLI args > Environment vars > Config file > Defaults
 */
export declare function resolveConfig(cliOptions?: CLIOptions): Promise<{
    config: MailDevConfig;
    configFilePath: string | null;
}>;
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