src/ethiopic/lib/startOfWeek.ts

import {
  type StartOfWeekOptions,
  startOfWeek as startOfWeekFns,
} from "date-fns";

/**
 * Start of week
 *
 * @param {Date} date - The original date
 * @param {StartOfWeekOptions} [options] - The options object
 * @returns {Date} The start of the week
 */
export function startOfWeek(date: Date, options?: StartOfWeekOptions): Date {
  const weekStartsOn = options?.weekStartsOn ?? 1; // Default to Monday (1)
  return startOfWeekFns(date, { weekStartsOn: weekStartsOn });
}