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@burglekitt/gmt

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Temporal-based date and time utilities with timezone support and polyfill integration

github.com/burglekitt/gmt

burglekitt/gmt

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/** * Return true when the input is a valid PlainDate or PlainDateTime ISO string. * * - Accepts both PlainDate ("2024-02-29") and PlainDateTime ("2024-02-29T12:34:56") formats. * - Uses regex to check format before parsing. * - Rejects leap seconds and invalid dates/times. * * @param value ISO PlainDate or PlainDateTime string * @returns boolean indicating validity * * @example isValidIsoDateLike("2024-02-29") // true * @example isValidIsoDateLike("2024-02-30") // false (invalid date) * @example isValidIsoDateLike("2024-02-29T12:34:56") // true * @example isValidIsoDateLike("2024-02-29T24:00:00") // false (invalid time) * @example isValidIsoDateLike("2024-12-31T23:59:60") // false (leap second) */ export declare function isValidIsoDateLike(value: string): boolean;