export interface ToolConfig {
    command?: string;
    defaultFlags?: string[];
}
export interface VersionCache {
    lastCheck: number;
    latestVersion: string;
}
export interface Config {
    defaultTool: string;
    tools: {
        [name: string]: ToolConfig;
    };
    versionCache?: VersionCache;
}
/**
 * Get the config directory path
 */
export declare function getConfigDir(): string;
/**
 * Get the config file path
 */
export declare function getConfigPath(): string;
/**
 * Ensure the config directory exists
 */
export declare function ensureConfigDir(): void;
/**
 * Load configuration from disk, or return defaults
 */
export declare function loadConfig(): Config;
/**
 * Save configuration to disk
 */
export declare function saveConfig(config: Config): void;
/**
 * Get the default tool (checks env var first, then config)
 */
export declare function getDefaultTool(): string;
/**
 * Set the default tool and save to config
 */
export declare function setDefaultTool(tool: string): {
    success: boolean;
    message: string;
};
/**
 * Get the cached version info
 */
export declare function getVersionCache(): VersionCache | undefined;
/**
 * Save version cache to config
 */
export declare function setVersionCache(cache: VersionCache): void;
/**
 * Check if we should perform a version check (based on cache age)
 */
export declare function shouldCheckVersion(): boolean;
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