export interface ResolvedConfigFile {
    config: unknown;
    filepath: string;
}
/**
 * Resolve all configuration files on disk from filesystem root to `cwd`.
 *
 * When no explicit `configPath` is provided, this walks from the current
 * working directory toward the filesystem root and captures at most one config
 * per directory according to {@link CONFIG_SEARCH_PLACES} precedence.
 *
 * @param cwd - Current working directory to begin searching from.
 * @param configPath - Optional explicit path to a config file.
 * @returns Config results ordered from root-most to leaf-most.
 */
export declare function resolveConfigFiles(cwd: string, configPath?: string): Promise<ResolvedConfigFile[]>;
/**
 * Resolve a configuration file on disk.
 *
 * Searches upward from a starting directory using `cosmiconfig` and supports
 * an explicit path override.
 *
 * @param cwd - Current working directory to begin searching from.
 * @param configPath - Optional explicit path to a config file.
 * @returns The loaded configuration and file path, or `null` if not found.
 * @throws {Error} When an explicit `configPath` does not exist.
 *
 * @example
 * ```ts
 * const result = await resolveConfigFile(process.cwd());
 * console.log(result?.filepath);
 * ```
 */
export declare function resolveConfigFile(cwd: string, configPath?: string): Promise<{
    config: unknown;
    filepath: string;
} | null>;
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