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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 the day of week (1-7) for a given ISO 8601 date string. * * - Monday=1 through Sunday=7. * - Returns null for invalid input. * * @param value ISO date string * @returns Day of week (1-7) or null on invalid input * * @example parseDayOfWeekFromDate("2024-01-01") // 1 (Monday) * @example parseDayOfWeekFromDate("2024-01-07") // 7 (Sunday) * @example parseDayOfWeekFromDate("2024-01-08") // 1 (Monday) * @example parseDayOfWeekFromDate("invalid") // null */ export declare function parseDayOfWeekFromDate(value: string): number | null;