{"ast":null,"code":"import { constructFrom } from \"./constructFrom.mjs\";\nimport { getWeekYear } from \"./getWeekYear.mjs\";\nimport { startOfWeek } from \"./startOfWeek.mjs\";\nimport { getDefaultOptions } from \"./_lib/defaultOptions.mjs\";\n\n/**\n * The {@link startOfWeekYear} function options.\n */\n\n/**\n * @name startOfWeekYear\n * @category Week-Numbering Year Helpers\n * @summary Return the start of a local week-numbering year for the given date.\n *\n * @description\n * Return the start of a local week-numbering year.\n * The exact calculation depends on the values of\n * `options.weekStartsOn` (which is the index of the first day of the week)\n * and `options.firstWeekContainsDate` (which is the day of January, which is always in\n * the first week of the week-numbering year)\n *\n * Week numbering: https://en.wikipedia.org/wiki/Week#The_ISO_week_date_system\n *\n * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).\n *\n * @param date - The original date\n * @param options - An object with options\n *\n * @returns The start of a week-numbering year\n *\n * @example\n * // The start of an a week-numbering year for 2 July 2005 with default settings:\n * const result = startOfWeekYear(new Date(2005, 6, 2))\n * //=> Sun Dec 26 2004 00:00:00\n *\n * @example\n * // The start of a week-numbering year for 2 July 2005\n * // if Monday is the first day of week\n * // and 4 January is always in the first week of the year:\n * const result = startOfWeekYear(new Date(2005, 6, 2), {\n *   weekStartsOn: 1,\n *   firstWeekContainsDate: 4\n * })\n * //=> Mon Jan 03 2005 00:00:00\n */\nexport function startOfWeekYear(date, options) {\n  const defaultOptions = getDefaultOptions();\n  const firstWeekContainsDate = options?.firstWeekContainsDate ?? options?.locale?.options?.firstWeekContainsDate ?? defaultOptions.firstWeekContainsDate ?? defaultOptions.locale?.options?.firstWeekContainsDate ?? 1;\n  const year = getWeekYear(date, options);\n  const firstWeek = constructFrom(date, 0);\n  firstWeek.setFullYear(year, 0, firstWeekContainsDate);\n  firstWeek.setHours(0, 0, 0, 0);\n  const _date = startOfWeek(firstWeek, options);\n  return _date;\n}\n\n// Fallback for modularized imports:\nexport default startOfWeekYear;","map":null,"metadata":{},"sourceType":"module","externalDependencies":[]}