/**
 * Represents the uncertain value
 *
 * @public exported from `@promptbook/core`
 */
export declare const ZERO_VALUE: any;
/**
 * Represents the uncertain value
 *
 * @public exported from `@promptbook/core`
 */
export declare const UNCERTAIN_ZERO_VALUE: any;
/**
 * Represents the usage with no resources consumed
 *
 * @public exported from `@promptbook/core`
 */
export declare const ZERO_USAGE: any;
/**
 * Represents the usage with unknown resources consumed
 *
 * @public exported from `@promptbook/core`
 */
export declare const UNCERTAIN_USAGE: any;