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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 if `start` and `end` form a valid time interval — both parseable as * ISO PlainTime strings and `start <= end`. * * - Both inputs must be ISO 8601 time strings (e.g. `"14:30:00"`). * - Equal `start === end` is valid. * - Invalid input, malformed strings, or leap-second strings return `false`. * * @param start ISO 8601 time string (interval start) * @param end ISO 8601 time string (interval end) * @returns true if start and end form a valid time interval, or false on invalid input * * @example isValidTimeInterval("09:00:00", "17:00:00") // true * @example isValidTimeInterval("12:00:00", "12:00:00") // true * @example isValidTimeInterval("17:00:00", "09:00:00") // false * @example isValidTimeInterval("invalid", "12:00:00") // false */ export declare function isValidTimeInterval(start: string, end: string): boolean;