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- import absFloor from '../utils/abs-floor';
- import absCeil from '../utils/abs-ceil';
- export function bubble() {
- var milliseconds = this._milliseconds,
- days = this._days,
- months = this._months,
- data = this._data,
- seconds,
- minutes,
- hours,
- years,
- monthsFromDays;
- // if we have a mix of positive and negative values, bubble down first
- // check: https://github.com/moment/moment/issues/2166
- if (
- !(
- (milliseconds >= 0 && days >= 0 && months >= 0) ||
- (milliseconds <= 0 && days <= 0 && months <= 0)
- )
- ) {
- milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
- days = 0;
- months = 0;
- }
- // The following code bubbles up values, see the tests for
- // examples of what that means.
- data.milliseconds = milliseconds % 1000;
- seconds = absFloor(milliseconds / 1000);
- data.seconds = seconds % 60;
- minutes = absFloor(seconds / 60);
- data.minutes = minutes % 60;
- hours = absFloor(minutes / 60);
- data.hours = hours % 24;
- days += absFloor(hours / 24);
- // convert days to months
- monthsFromDays = absFloor(daysToMonths(days));
- months += monthsFromDays;
- days -= absCeil(monthsToDays(monthsFromDays));
- // 12 months -> 1 year
- years = absFloor(months / 12);
- months %= 12;
- data.days = days;
- data.months = months;
- data.years = years;
- return this;
- }
- export function daysToMonths(days) {
- // 400 years have 146097 days (taking into account leap year rules)
- // 400 years have 12 months === 4800
- return (days * 4800) / 146097;
- }
- export function monthsToDays(months) {
- // the reverse of daysToMonths
- return (months * 146097) / 4800;
- }
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