export type ReviewTokenFailure = 'invalid' | 'expired' | 'mismatch';
export type ReviewTokenResult = {
    valid: true;
} | {
    valid: false;
    reason: ReviewTokenFailure;
};
export declare class ReviewTokenStore {
    private readonly pending;
    private readonly ttlMs;
    private readonly now;
    constructor(options?: {
        ttlMs?: number;
        now?: () => number;
    });
    create<T = undefined>(operation: string, payload: unknown, reviewedContent: string, context?: T): string;
    consume(token: string, operation: string, payload: unknown, reviewedContent: string): ReviewTokenResult;
    take<T>(token: string, operation: string): (ReviewTokenResult & {
        context?: T;
    });
}
export declare function fingerprint(value: unknown): string;