{"ast":null,"code":"import { millisecondsInDay } from \"./constants.mjs\";\nimport { startOfDay } from \"./startOfDay.mjs\";\nimport { getTimezoneOffsetInMilliseconds } from \"./_lib/getTimezoneOffsetInMilliseconds.mjs\";\n\n/**\n * @name differenceInCalendarDays\n * @category Day Helpers\n * @summary Get the number of calendar days between the given dates.\n *\n * @description\n * Get the number of calendar days between the given dates. This means that the times are removed\n * from the dates and then the difference in days is calculated.\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 dateLeft - The later date\n * @param dateRight - The earlier date\n *\n * @returns The number of calendar days\n *\n * @example\n * // How many calendar days are between\n * // 2 July 2011 23:00:00 and 2 July 2012 00:00:00?\n * const result = differenceInCalendarDays(\n *   new Date(2012, 6, 2, 0, 0),\n *   new Date(2011, 6, 2, 23, 0)\n * )\n * //=> 366\n * // How many calendar days are between\n * // 2 July 2011 23:59:00 and 3 July 2011 00:01:00?\n * const result = differenceInCalendarDays(\n *   new Date(2011, 6, 3, 0, 1),\n *   new Date(2011, 6, 2, 23, 59)\n * )\n * //=> 1\n */\nexport function differenceInCalendarDays(dateLeft, dateRight) {\n  const startOfDayLeft = startOfDay(dateLeft);\n  const startOfDayRight = startOfDay(dateRight);\n  const timestampLeft = +startOfDayLeft - getTimezoneOffsetInMilliseconds(startOfDayLeft);\n  const timestampRight = +startOfDayRight - getTimezoneOffsetInMilliseconds(startOfDayRight);\n\n  // Round the number of days to the nearest integer because the number of\n  // milliseconds in a day is not constant (e.g. it's different in the week of\n  // the daylight saving time clock shift).\n  return Math.round((timestampLeft - timestampRight) / millisecondsInDay);\n}\n\n// Fallback for modularized imports:\nexport default differenceInCalendarDays;","map":null,"metadata":{},"sourceType":"module","externalDependencies":[]}