Time-Divider

Sequentially divides a period of time into multiple segments of specified duration, the last segment may be of less than the specified duration. Time periods do not contain end times, [startTime, endTime)

npm install time-divider --save

Eglish | 中文简体

Usage

const { TimeDivider, UNITS } = require('time-divider');

const startTime = 1577462400000; // Sat Dec 28 2019 00:00:00 GMT+0800
const endTime = 1626580800000; // Sun Jul 18 2021 12:00:00 GMT+0800

const chunks = new TimeDivider(startTime, endTime).divide(2, UNITS.MONTH);

console.log(chunks);

console.log(
  chunks.map((chunk) => {
    const { start, end } = chunk;
    return new Date(start).toString() + ' - ' + new Date(end).toString();
  }),
);

Output:

[
  { start: 1577462400000, end: 1582819199999 },
  { start: 1582819200000, end: 1588003199999 },
  { start: 1588003200000, end: 1593273599999 },
  { start: 1593273600000, end: 1598543999999 },
  { start: 1598544000000, end: 1603814399999 },
  { start: 1603814400000, end: 1609084799999 },
  { start: 1609084800000, end: 1614441599999 },
  { start: 1614441600000, end: 1619539199999 },
  { start: 1619539200000, end: 1624809599999 },
  { start: 1624809600000, end: 1626580799999 }
]
[
  'Sat Dec 28 2019 00:00:00 GMT+0800 (中国标准时间) - Thu Feb 27 2020 23:59:59 GMT+0800 (中国标准时间)',
  'Fri Feb 28 2020 00:00:00 GMT+0800 (中国标准时间) - Mon Apr 27 2020 23:59:59 GMT+0800 (中国标准时间)',
  'Tue Apr 28 2020 00:00:00 GMT+0800 (中国标准时间) - Sat Jun 27 2020 23:59:59 GMT+0800 (中国标准时间)',
  'Sun Jun 28 2020 00:00:00 GMT+0800 (中国标准时间) - Thu Aug 27 2020 23:59:59 GMT+0800 (中国标准时间)',
  'Fri Aug 28 2020 00:00:00 GMT+0800 (中国标准时间) - Tue Oct 27 2020 23:59:59 GMT+0800 (中国标准时间)',
  'Wed Oct 28 2020 00:00:00 GMT+0800 (中国标准时间) - Sun Dec 27 2020 23:59:59 GMT+0800 (中国标准时间)',
  'Mon Dec 28 2020 00:00:00 GMT+0800 (中国标准时间) - Sat Feb 27 2021 23:59:59 GMT+0800 (中国标准时间)',
  'Sun Feb 28 2021 00:00:00 GMT+0800 (中国标准时间) - Tue Apr 27 2021 23:59:59 GMT+0800 (中国标准时间)',
  'Wed Apr 28 2021 00:00:00 GMT+0800 (中国标准时间) - Sun Jun 27 2021 23:59:59 GMT+0800 (中国标准时间)',
  'Mon Jun 28 2021 00:00:00 GMT+0800 (中国标准时间) - Sun Jul 18 2021 11:59:59 GMT+0800 (中国标准时间)'
]

UNITS

enum Units {
  Millisecond,
  Second,
  Minute,
  Hour,
  Day,
  Week,
  Month,
  Year,
}

License

MIT © Cody Tseng