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 王天杨
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/**
* @name isValid
* @category Common Helpers
* @summary Is the given date valid?
*
* @description
* Returns false if argument is Invalid Date and true otherwise.
* Argument is converted to Date using `toDate`. See [toDate](https://date-fns.org/docs/toDate)
* Invalid Date is a Date, whose time value is NaN.
*
* Time value of Date: http://es5.github.io/#x15.9.1.1
*
* @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
*
* @param date - The date to check
*
* @returns The date is valid
*
* @example
* // For the valid date:
* const result = isValid(new Date(2014, 1, 31))
* //=> true
*
* @example
* // For the value, convertable into a date:
* const result = isValid(1393804800000)
* //=> true
*
* @example
* // For the invalid date:
* const result = isValid(new Date(''))
* //=> false
*/
export declare function isValid(date: unknown): boolean;
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