export declare function isAlwaysDecision(decision: string | null | undefined): boolean;

export declare function isApproval(decision: string | null | undefined): boolean;

export interface GrantStore {
  isGranted(sessionId: string, toolName: string): boolean;
  grant(sessionId: string, toolName: string, decision: string): boolean;
  revokeSession(sessionId: string): void;
  size(): number;
}

export declare function createGrantStore(): GrantStore;