timepiece/node_modules/date-fns/isValid.js

46 lines
1.2 KiB
JavaScript

"use strict";
exports.isValid = isValid;
var _index = require("./isDate.js");
var _index2 = require("./toDate.js");
/**
* @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
*/
function isValid(date) {
if (!(0, _index.isDate)(date) && typeof date !== "number") {
return false;
}
const _date = (0, _index2.toDate)(date);
return !isNaN(Number(_date));
}