Check Date String
Checks if the given value is a valid date string.
isDateString
Checks if the given value is a valid date string.
Note
- A value is considered a valid date string if it is a string and can be parsed by
Date.parse(). - This uses the native JavaScript date parser internally.
Signature
function isDateString(value: unknown): value is stringParameters
value: Value to check
Return Type
boolean - Whether valid date string
Example
playground.ts
See Also
isDate- Checks if a value is a Date object.isDateLike- Checks if a value is date-like (Date, Day.js, Moment, Chronos, Luxon, Temporal etc.)
Last updated: Tue, May 26, 2026 11:45:10AM (UTC)