/** Historical default config directory: ~/.config/elnora-merit */
export declare const DEFAULT_CONFIG_DIR: string;
/**
 * The base directory for elnora-merit's reference/config files. Honors
 * MERIT_REFERENCES_DIR (trimmed) when set and non-empty; otherwise the historical
 * default. Per-file flags (e.g. `--map`) and per-file env vars (e.g.
 * MERIT_STRIPE_MAP) still override the path of an individual file at a higher
 * precedence than this base.
 */
export declare function resolveConfigDir(env?: NodeJS.ProcessEnv): string;
/** Join a filename onto the resolved config directory. */
export declare function configPath(filename: string, env?: NodeJS.ProcessEnv): string;