source: node_modules/d3-time/dist/d3-time.js@ e4c61dd

// https://d3js.org/d3-time/ v3.1.0 Copyright 2010-2022 Mike Bostock
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-array')) :
typeof define === 'function' && define.amd ? define(['exports', 'd3-array'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3));
})(this, (function (exports, d3Array) { 'use strict';

const t0 = new Date, t1 = new Date;

function timeInterval(floori, offseti, count, field) {

  function interval(date) {
    return floori(date = arguments.length === 0 ? new Date : new Date(+date)), date;
  }

  interval.floor = (date) => {
    return floori(date = new Date(+date)), date;
  };

  interval.ceil = (date) => {
    return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date;
  };

  interval.round = (date) => {
    const d0 = interval(date), d1 = interval.ceil(date);
    return date - d0 < d1 - date ? d0 : d1;
  };

  interval.offset = (date, step) => {
    return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date;
  };

  interval.range = (start, stop, step) => {
    const range = [];
    start = interval.ceil(start);
    step = step == null ? 1 : Math.floor(step);
    if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date
    let previous;
    do range.push(previous = new Date(+start)), offseti(start, step), floori(start);
    while (previous < start && start < stop);
    return range;
  };

  interval.filter = (test) => {
    return timeInterval((date) => {
      if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1);
    }, (date, step) => {
      if (date >= date) {
        if (step < 0) while (++step <= 0) {
          while (offseti(date, -1), !test(date)) {} // eslint-disable-line no-empty
        } else while (--step >= 0) {
          while (offseti(date, +1), !test(date)) {} // eslint-disable-line no-empty
        }
      }
    });
  };

  if (count) {
    interval.count = (start, end) => {
      t0.setTime(+start), t1.setTime(+end);
      floori(t0), floori(t1);
      return Math.floor(count(t0, t1));
    };

    interval.every = (step) => {
      step = Math.floor(step);
      return !isFinite(step) || !(step > 0) ? null
          : !(step > 1) ? interval
          : interval.filter(field
              ? (d) => field(d) % step === 0
              : (d) => interval.count(0, d) % step === 0);
    };
  }

  return interval;
}

const millisecond = timeInterval(() => {
  // noop
}, (date, step) => {
  date.setTime(+date + step);
}, (start, end) => {
  return end - start;
});

// An optimized implementation for this simple case.
millisecond.every = (k) => {
  k = Math.floor(k);
  if (!isFinite(k) || !(k > 0)) return null;
  if (!(k > 1)) return millisecond;
  return timeInterval((date) => {
    date.setTime(Math.floor(date / k) * k);
  }, (date, step) => {
    date.setTime(+date + step * k);
  }, (start, end) => {
    return (end - start) / k;
  });
};

const milliseconds = millisecond.range;

const durationSecond = 1000;
const durationMinute = durationSecond * 60;
const durationHour = durationMinute * 60;
const durationDay = durationHour * 24;
const durationWeek = durationDay * 7;
const durationMonth = durationDay * 30;
const durationYear = durationDay * 365;

const second = timeInterval((date) => {
  date.setTime(date - date.getMilliseconds());
}, (date, step) => {
  date.setTime(+date + step * durationSecond);
}, (start, end) => {
  return (end - start) / durationSecond;
}, (date) => {
  return date.getUTCSeconds();
});

const seconds = second.range;

const timeMinute = timeInterval((date) => {
  date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond);
}, (date, step) => {
  date.setTime(+date + step * durationMinute);
}, (start, end) => {
  return (end - start) / durationMinute;
}, (date) => {
  return date.getMinutes();
});

const timeMinutes = timeMinute.range;

const utcMinute = timeInterval((date) => {
  date.setUTCSeconds(0, 0);
}, (date, step) => {
  date.setTime(+date + step * durationMinute);
}, (start, end) => {
  return (end - start) / durationMinute;
}, (date) => {
  return date.getUTCMinutes();
});

const utcMinutes = utcMinute.range;

const timeHour = timeInterval((date) => {
  date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond - date.getMinutes() * durationMinute);
}, (date, step) => {
  date.setTime(+date + step * durationHour);
}, (start, end) => {
  return (end - start) / durationHour;
}, (date) => {
  return date.getHours();
});

const timeHours = timeHour.range;

const utcHour = timeInterval((date) => {
  date.setUTCMinutes(0, 0, 0);
}, (date, step) => {
  date.setTime(+date + step * durationHour);
}, (start, end) => {
  return (end - start) / durationHour;
}, (date) => {
  return date.getUTCHours();
});

const utcHours = utcHour.range;

const timeDay = timeInterval(
  date => date.setHours(0, 0, 0, 0),
  (date, step) => date.setDate(date.getDate() + step),
  (start, end) => (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationDay,
  date => date.getDate() - 1
);

const timeDays = timeDay.range;

const utcDay = timeInterval((date) => {
  date.setUTCHours(0, 0, 0, 0);
}, (date, step) => {
  date.setUTCDate(date.getUTCDate() + step);
}, (start, end) => {
  return (end - start) / durationDay;
}, (date) => {
  return date.getUTCDate() - 1;
});

const utcDays = utcDay.range;

const unixDay = timeInterval((date) => {
  date.setUTCHours(0, 0, 0, 0);
}, (date, step) => {
  date.setUTCDate(date.getUTCDate() + step);
}, (start, end) => {
  return (end - start) / durationDay;
}, (date) => {
  return Math.floor(date / durationDay);
});

const unixDays = unixDay.range;

function timeWeekday(i) {
  return timeInterval((date) => {
    date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7);
    date.setHours(0, 0, 0, 0);
  }, (date, step) => {
    date.setDate(date.getDate() + step * 7);
  }, (start, end) => {
    return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationWeek;
  });
}

const timeSunday = timeWeekday(0);
const timeMonday = timeWeekday(1);
const timeTuesday = timeWeekday(2);
const timeWednesday = timeWeekday(3);
const timeThursday = timeWeekday(4);
const timeFriday = timeWeekday(5);
const timeSaturday = timeWeekday(6);

const timeSundays = timeSunday.range;
const timeMondays = timeMonday.range;
const timeTuesdays = timeTuesday.range;
const timeWednesdays = timeWednesday.range;
const timeThursdays = timeThursday.range;
const timeFridays = timeFriday.range;
const timeSaturdays = timeSaturday.range;

function utcWeekday(i) {
  return timeInterval((date) => {
    date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7);
    date.setUTCHours(0, 0, 0, 0);
  }, (date, step) => {
    date.setUTCDate(date.getUTCDate() + step * 7);
  }, (start, end) => {
    return (end - start) / durationWeek;
  });
}

const utcSunday = utcWeekday(0);
const utcMonday = utcWeekday(1);
const utcTuesday = utcWeekday(2);
const utcWednesday = utcWeekday(3);
const utcThursday = utcWeekday(4);
const utcFriday = utcWeekday(5);
const utcSaturday = utcWeekday(6);

const utcSundays = utcSunday.range;
const utcMondays = utcMonday.range;
const utcTuesdays = utcTuesday.range;
const utcWednesdays = utcWednesday.range;
const utcThursdays = utcThursday.range;
const utcFridays = utcFriday.range;
const utcSaturdays = utcSaturday.range;

const timeMonth = timeInterval((date) => {
  date.setDate(1);
  date.setHours(0, 0, 0, 0);
}, (date, step) => {
  date.setMonth(date.getMonth() + step);
}, (start, end) => {
  return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12;
}, (date) => {
  return date.getMonth();
});

const timeMonths = timeMonth.range;

const utcMonth = timeInterval((date) => {
  date.setUTCDate(1);
  date.setUTCHours(0, 0, 0, 0);
}, (date, step) => {
  date.setUTCMonth(date.getUTCMonth() + step);
}, (start, end) => {
  return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12;
}, (date) => {
  return date.getUTCMonth();
});

const utcMonths = utcMonth.range;

const timeYear = timeInterval((date) => {
  date.setMonth(0, 1);
  date.setHours(0, 0, 0, 0);
}, (date, step) => {
  date.setFullYear(date.getFullYear() + step);
}, (start, end) => {
  return end.getFullYear() - start.getFullYear();
}, (date) => {
  return date.getFullYear();
});

// An optimized implementation for this simple case.
timeYear.every = (k) => {
  return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : timeInterval((date) => {
    date.setFullYear(Math.floor(date.getFullYear() / k) * k);
    date.setMonth(0, 1);
    date.setHours(0, 0, 0, 0);
  }, (date, step) => {
    date.setFullYear(date.getFullYear() + step * k);
  });
};

const timeYears = timeYear.range;

const utcYear = timeInterval((date) => {
  date.setUTCMonth(0, 1);
  date.setUTCHours(0, 0, 0, 0);
}, (date, step) => {
  date.setUTCFullYear(date.getUTCFullYear() + step);
}, (start, end) => {
  return end.getUTCFullYear() - start.getUTCFullYear();
}, (date) => {
  return date.getUTCFullYear();
});

// An optimized implementation for this simple case.
utcYear.every = (k) => {
  return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : timeInterval((date) => {
    date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k);
    date.setUTCMonth(0, 1);
    date.setUTCHours(0, 0, 0, 0);
  }, (date, step) => {
    date.setUTCFullYear(date.getUTCFullYear() + step * k);
  });
};

const utcYears = utcYear.range;

function ticker(year, month, week, day, hour, minute) {

  const tickIntervals = [
    [second,  1,      durationSecond],
    [second,  5,  5 * durationSecond],
    [second, 15, 15 * durationSecond],
    [second, 30, 30 * durationSecond],
    [minute,  1,      durationMinute],
    [minute,  5,  5 * durationMinute],
    [minute, 15, 15 * durationMinute],
    [minute, 30, 30 * durationMinute],
    [  hour,  1,      durationHour  ],
    [  hour,  3,  3 * durationHour  ],
    [  hour,  6,  6 * durationHour  ],
    [  hour, 12, 12 * durationHour  ],
    [   day,  1,      durationDay   ],
    [   day,  2,  2 * durationDay   ],
    [  week,  1,      durationWeek  ],
    [ month,  1,      durationMonth ],
    [ month,  3,  3 * durationMonth ],
    [  year,  1,      durationYear  ]
  ];

  function ticks(start, stop, count) {
    const reverse = stop < start;
    if (reverse) [start, stop] = [stop, start];
    const interval = count && typeof count.range === "function" ? count : tickInterval(start, stop, count);
    const ticks = interval ? interval.range(start, +stop + 1) : []; // inclusive stop
    return reverse ? ticks.reverse() : ticks;
  }

  function tickInterval(start, stop, count) {
    const target = Math.abs(stop - start) / count;
    const i = d3Array.bisector(([,, step]) => step).right(tickIntervals, target);
    if (i === tickIntervals.length) return year.every(d3Array.tickStep(start / durationYear, stop / durationYear, count));
    if (i === 0) return millisecond.every(Math.max(d3Array.tickStep(start, stop, count), 1));
    const [t, step] = tickIntervals[target / tickIntervals[i - 1][2] < tickIntervals[i][2] / target ? i - 1 : i];
    return t.every(step);
  }

  return [ticks, tickInterval];
}

const [utcTicks, utcTickInterval] = ticker(utcYear, utcMonth, utcSunday, unixDay, utcHour, utcMinute);
const [timeTicks, timeTickInterval] = ticker(timeYear, timeMonth, timeSunday, timeDay, timeHour, timeMinute);

exports.timeDay = timeDay;
exports.timeDays = timeDays;
exports.timeFriday = timeFriday;
exports.timeFridays = timeFridays;
exports.timeHour = timeHour;
exports.timeHours = timeHours;
exports.timeInterval = timeInterval;
exports.timeMillisecond = millisecond;
exports.timeMilliseconds = milliseconds;
exports.timeMinute = timeMinute;
exports.timeMinutes = timeMinutes;
exports.timeMonday = timeMonday;
exports.timeMondays = timeMondays;
exports.timeMonth = timeMonth;
exports.timeMonths = timeMonths;
exports.timeSaturday = timeSaturday;
exports.timeSaturdays = timeSaturdays;
exports.timeSecond = second;
exports.timeSeconds = seconds;
exports.timeSunday = timeSunday;
exports.timeSundays = timeSundays;
exports.timeThursday = timeThursday;
exports.timeThursdays = timeThursdays;
exports.timeTickInterval = timeTickInterval;
exports.timeTicks = timeTicks;
exports.timeTuesday = timeTuesday;
exports.timeTuesdays = timeTuesdays;
exports.timeWednesday = timeWednesday;
exports.timeWednesdays = timeWednesdays;
exports.timeWeek = timeSunday;
exports.timeWeeks = timeSundays;
exports.timeYear = timeYear;
exports.timeYears = timeYears;
exports.unixDay = unixDay;
exports.unixDays = unixDays;
exports.utcDay = utcDay;
exports.utcDays = utcDays;
exports.utcFriday = utcFriday;
exports.utcFridays = utcFridays;
exports.utcHour = utcHour;
exports.utcHours = utcHours;
exports.utcMillisecond = millisecond;
exports.utcMilliseconds = milliseconds;
exports.utcMinute = utcMinute;
exports.utcMinutes = utcMinutes;
exports.utcMonday = utcMonday;
exports.utcMondays = utcMondays;
exports.utcMonth = utcMonth;
exports.utcMonths = utcMonths;
exports.utcSaturday = utcSaturday;
exports.utcSaturdays = utcSaturdays;
exports.utcSecond = second;
exports.utcSeconds = seconds;
exports.utcSunday = utcSunday;
exports.utcSundays = utcSundays;
exports.utcThursday = utcThursday;
exports.utcThursdays = utcThursdays;
exports.utcTickInterval = utcTickInterval;
exports.utcTicks = utcTicks;
exports.utcTuesday = utcTuesday;
exports.utcTuesdays = utcTuesdays;
exports.utcWednesday = utcWednesday;
exports.utcWednesdays = utcWednesdays;
exports.utcWeek = utcSunday;
exports.utcWeeks = utcSundays;
exports.utcYear = utcYear;
exports.utcYears = utcYears;

}));