/**
 * Check if given is `CronEvery`.
 *
 * @category Predicates
 * @example
 * ```typescript
 * isCronEvery("*"); // true
 * isCronEvery("INVALID"); // false
 * ```
 * @param value Value to check.
 * @returns Returns `true` if is `CronEvery`, `false` otherwise.
 */
export declare const isCronEvery: (value: unknown) => value is "*";