import type { ValidationOptions } from 'class-validator';
import type { OpUnitType } from 'dayjs';
/** @hidden */
export declare const FUTURE_DAYJS = "futureDayjs";
/**
 * Checks if the given value is a valid Dayjs object in the future.
 *
 * Beware that the behaviour of this check depends on the current time and can thus be difficult to test. In particular,
 * as time goes by the property can become invalid without ever changing its value.
 *
 * #### Example
 * ```typescript
 * // Ensure the value is in the future.
 * @FutureDayjs()
 * scheduledFor: Dayjs
 * ```
 *
 * @category Dayjs
 * @param options
 * Accepts the following options (in addition to generic class-validator options):
 *   - `allow_invalid: boolean = false`
 *     If true, allow the Dayjs object to be invalid (see [isValid()](https://day.js.org/docs/en/parse/is-valid)).
 *   - `inclusive: boolean = false`
 *     If true, allow the current date as well.
 *   - `granularity: string = 'milliseconds'`
 *     Defines the [granularity](https://day.js.org/docs/en/manipulate/start-of#list-of-all-available-units), e.g. "day"
 *     to ignore hours, minutes, seconds and milliseconds.
 */
export declare function FutureDayjs(options?: {
    allow_invalid?: boolean;
    inclusive?: boolean;
    granularity?: OpUnitType;
} & ValidationOptions): PropertyDecorator;