Acme.BookStore.HttpApi.Host/node_modules/luxon/src/datetime.js

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import Duration, { friendlyDuration } from "./duration.js";
import Interval from "./interval.js";
import Settings from "./settings.js";
import Info from "./info.js";
import Formatter from "./impl/formatter.js";
import FixedOffsetZone from "./zones/fixedOffsetZone.js";
import Locale from "./impl/locale.js";
import {
  isUndefined,
  maybeArray,
  isDate,
  isNumber,
  bestBy,
  daysInMonth,
  daysInYear,
  isLeapYear,
  weeksInWeekYear,
  normalizeObject,
  roundTo,
  objToLocalTS
} from "./impl/util.js";
import { normalizeZone } from "./impl/zoneUtil.js";
import diff from "./impl/diff.js";
import { parseRFC2822Date, parseISODate, parseHTTPDate, parseSQL } from "./impl/regexParser.js";
import { parseFromTokens, explainFromTokens } from "./impl/tokenParser.js";
import {
  gregorianToWeek,
  weekToGregorian,
  gregorianToOrdinal,
  ordinalToGregorian,
  hasInvalidGregorianData,
  hasInvalidWeekData,
  hasInvalidOrdinalData,
  hasInvalidTimeData
} from "./impl/conversions.js";
import * as Formats from "./impl/formats.js";
import {
  InvalidArgumentError,
  ConflictingSpecificationError,
  InvalidUnitError,
  InvalidDateTimeError
} from "./errors.js";
import Invalid from "./impl/invalid.js";

const INVALID = "Invalid DateTime";
const MAX_DATE = 8.64e15;

function unsupportedZone(zone) {
  return new Invalid("unsupported zone", `the zone "${zone.name}" is not supported`);
}

// we cache week data on the DT object and this intermediates the cache
function possiblyCachedWeekData(dt) {
  if (dt.weekData === null) {
    dt.weekData = gregorianToWeek(dt.c);
  }
  return dt.weekData;
}

// clone really means, "make a new object with these modifications". all "setters" really use this