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天文台pc/tianwentai-ui/node_modules/date-fns/eachQuarterOfInterval.js 1.89 KB
bc518174   王天杨   提交两个项目文件
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  "use strict";
  exports.eachQuarterOfInterval = eachQuarterOfInterval;
  var _index = require("./addQuarters.js");
  var _index2 = require("./startOfQuarter.js");
  var _index3 = require("./toDate.js");
  
  /**
   * The {@link eachQuarterOfInterval} function options.
   */
  
  /**
   * @name eachQuarterOfInterval
   * @category Interval Helpers
   * @summary Return the array of quarters within the specified time interval.
   *
   * @description
   * Return the array of quarters within the specified time interval.
   *
   * @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).
   *
   * @param interval - The interval
   *
   * @returns The array with starts of quarters from the quarter of the interval start to the quarter of the interval end
   *
   * @example
   * // Each quarter within interval 6 February 2014 - 10 August 2014:
   * const result = eachQuarterOfInterval({
   *   start: new Date(2014, 1, 6),
   *   end: new Date(2014, 7, 10)
   * })
   * //=> [
   * //   Wed Jan 01 2014 00:00:00,
   * //   Tue Apr 01 2014 00:00:00,
   * //   Tue Jul 01 2014 00:00:00,
   * // ]
   */
  function eachQuarterOfInterval(interval, options) {
    const startDate = (0, _index3.toDate)(interval.start);
    const endDate = (0, _index3.toDate)(interval.end);
  
    let reversed = +startDate > +endDate;
    const endTime = reversed
      ? +(0, _index2.startOfQuarter)(startDate)
      : +(0, _index2.startOfQuarter)(endDate);
    let currentDate = reversed
      ? (0, _index2.startOfQuarter)(endDate)
      : (0, _index2.startOfQuarter)(startDate);
  
    let step = options?.step ?? 1;
    if (!step) return [];
    if (step < 0) {
      step = -step;
      reversed = !reversed;
    }
  
    const dates = [];
  
    while (+currentDate <= endTime) {
      dates.push((0, _index3.toDate)(currentDate));
      currentDate = (0, _index.addQuarters)(currentDate, step);
    }
  
    return reversed ? dates.reverse() : dates;
  }