export type ApprovalPlanValue = null | boolean | number | string | ApprovalPlanValue[] | {
    [key: string]: ApprovalPlanValue;
};
export interface ApprovalPlan {
    value: ApprovalPlanValue;
    canonical: string;
    display: string;
    hash: string;
}
export declare function isApprovalPlanValue(value: unknown): value is ApprovalPlanValue;
export declare function createApprovalPlan(value: unknown): ApprovalPlan;
export declare function formatApprovalMessage(message: string, plan: ApprovalPlan): string;
export declare function assertApprovalPlanHash(expectedHash: string, actualHash: string): void;