@date-vir/duration/dist/negate-duration.js

Durations units an utils for date-vir.

/**
 * Negates all properties in a duration.
 *
 * @category Duration
 * @example
 *
 * ```ts
 * import {negateDuration} from 'date-vir';
 *
 * negateDuration({hours: -1, minutes: 5, seconds: 35});
 * // `{hours: 1, minutes: -5, seconds: -35}`
 * ```
 */
export function negateDuration(duration) {
    return Object.fromEntries(Object.entries(duration).map(([key, value,]) => [
        key,
        value == undefined ? undefined : value * -1,
    ]));
}