import type { DiagramSettings } from './config.js';
export interface ProjectConfigResult {
    /** The resolved settings (default export of the config file). */
    settings: DiagramSettings;
    /** Absolute path of the config file actually loaded. */
    path: string;
}
/**
 * Search `startDir` and each parent for a gridgram config file. Returns
 * the first match's absolute path or null.
 */
export declare function findProjectConfig(startDir: string): string | null;
/** Load a config file at an absolute path. Inferred format from extension. */
export declare function loadConfigFile(path: string): Promise<DiagramSettings>;
/**
 * Convenience: find + load in one call. `explicitPath`, when given,
 * skips discovery. Returns null when no config is found (no error).
 */
export declare function loadProjectConfig(opts?: {
    cwd?: string;
    explicitPath?: string;
}): Promise<ProjectConfigResult | null>;
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