declare const GENERATION_LOCK_FILE = ".generation.lock";
export interface GenerationLockOptions {
    maxWaitMs?: number;
    signal?: AbortSignal;
}
export declare class GenerationLockHeldError extends Error {
    readonly lockPath: string;
    readonly ageMs: number;
    constructor(lockPath: string, ageMs: number);
}
/** Acquire the repository-scoped lock covering every mutating generation phase. */
export declare function acquireGenerationLock(rootPath: string, options?: GenerationLockOptions): Promise<() => Promise<void>>;
/** Serialize one complete mutating generation while always releasing ownership. */
export declare function withGenerationLock<T>(rootPath: string, callback: () => Promise<T>, options?: GenerationLockOptions): Promise<T>;
export { GENERATION_LOCK_FILE };
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