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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 a zoned ISO 8601 datetime string with `amount` business days subtracted from `value`. * * - Uses fixed ISO Monday–Friday business days (no locale awareness). * - Saturday and Sunday are skipped during the count. * - Preserves the original time component through the operation. * - Returns "" on invalid input. * * @param value ISO 8601 zoned datetime string * @param amount number of business days to subtract * @returns Zoned ISO 8601 datetime string after subtracting business days, or "" on invalid input * * @example subtractZonedBusinessDays("2024-03-18T14:30:00-04:00[America/New_York]", 1) // "2024-03-15T14:30:00-04:00[America/New_York]" * @example subtractZonedBusinessDays("2024-03-18T14:30:00-04:00[America/New_York]", 2) // "2024-03-14T14:30:00-04:00[America/New_York]" * @example subtractZonedBusinessDays("2024-03-18T14:30:00-04:00[America/New_York]", 0) // "2024-03-18T14:30:00-04:00[America/New_York]" * @example subtractZonedBusinessDays("invalid", 1) // "" */ export declare function subtractZonedBusinessDays(value: string, amount: number): string;