1 import absFloor from '../utils/abs-floor';
2 import absCeil from '../utils/abs-ceil';
3 import { createUTCDate } from '../create/date-from-array';
5 export function bubble () {
6 var milliseconds = this._milliseconds;
8 var months = this._months;
10 var seconds, minutes, hours, years, monthsFromDays;
12 // if we have a mix of positive and negative values, bubble down first
13 // check: https://github.com/moment/moment/issues/2166
14 if (!((milliseconds >= 0 && days >= 0 && months >= 0) ||
15 (milliseconds <= 0 && days <= 0 && months <= 0))) {
16 milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
21 // The following code bubbles up values, see the tests for
22 // examples of what that means.
23 data.milliseconds = milliseconds % 1000;
25 seconds = absFloor(milliseconds / 1000);
26 data.seconds = seconds % 60;
28 minutes = absFloor(seconds / 60);
29 data.minutes = minutes % 60;
31 hours = absFloor(minutes / 60);
32 data.hours = hours % 24;
34 days += absFloor(hours / 24);
36 // convert days to months
37 monthsFromDays = absFloor(daysToMonths(days));
38 months += monthsFromDays;
39 days -= absCeil(monthsToDays(monthsFromDays));
41 // 12 months -> 1 year
42 years = absFloor(months / 12);
52 export function daysToMonths (days) {
53 // 400 years have 146097 days (taking into account leap year rules)
54 // 400 years have 12 months === 4800
55 return days * 4800 / 146097;
58 export function monthsToDays (months) {
59 // the reverse of daysToMonths
60 return months * 146097 / 4800;