@vnmfify/core/countdown/countdown.shared.js

```shell npm i @vnmfify/core -S ```

import _get from "lodash/get";
import _replace from "lodash/replace";
import _toString from "lodash/toString";
import _padStart from "lodash/padStart";
var REGEX_FORMAT = /\[([^\]]+)]|D{1,2}|H{1,2}|h{1,2}|m{1,2}|s{1,2}|S{1,3}/g;

function padZero(num) {
  var targetLength = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 2;
  return _padStart(_toString(num), targetLength, "0");
}

function rightCurrentTime(format, currentTime) {
  var {
    total,
    days
  } = currentTime;
  var {
    hours,
    minutes,
    seconds,
    milliseconds
  } = currentTime;

  if (!format.includes("D")) {
    hours += days * 24;
  }

  if (!format.includes("H") && !format.includes("h")) {
    minutes += hours * 60;
  }

  if (!format.includes("m")) {
    seconds += minutes * 60;
  }

  if (!format.includes("s")) {
    milliseconds += seconds * 1000;
  }

  return {
    total,
    days,
    hours,
    minutes,
    seconds,
    milliseconds
  };
}

export function parseFormat(format, currentTime) {
  var {
    days,
    hours,
    minutes,
    seconds,
    milliseconds
  } = rightCurrentTime(format, currentTime);
  var matches = {
    D: days,
    DD: padZero(days),
    H: hours,
    HH: padZero(hours),
    m: minutes,
    mm: padZero(minutes),
    s: seconds,
    ss: padZero(seconds),
    S: padZero(milliseconds, 3).charAt(0),
    SS: padZero(milliseconds, 3).slice(0, 2),
    SSS: padZero(milliseconds, 3)
  };
  return _replace(format, REGEX_FORMAT, (match, $1) => $1 || _get(matches, match));
}
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