import { daysToMonths, monthsToDays } from './bubble';
import { normalizeUnits } from '../units/aliases';
import toInt from '../utils/to-int';
export function as (units) {
if (!this.isValid()) {
return NaN;
}
var days;
var months;
var milliseconds = this._milliseconds;
units = normalizeUnits(units);
if (units === 'month' || units === 'year') {
days = this._days + milliseconds / 864e5;
months = this._months + daysToMonths(days);
return units === 'month' ? months : months / 12;
} else {
// handle milliseconds separately because of floating point math errors (issue #1867)
days = this._days + Math.round(monthsToDays(this._months));
switch (units) {
case 'week' : return days / 7 + milliseconds / 6048e5;
case 'day' : return days + milliseconds / 864e5;
case 'hour' : return days * 24 + milliseconds / 36e5;
case 'minute' : return days * 1440 + milliseconds / 6e4;
case 'second' : return days * 86400 + milliseconds / 1000;
// Math.floor prevents floating point math errors here
case 'millisecond': return Math.floor(days * 864e5) + milliseconds;
default: throw new Error('Unknown unit ' + units);
}
}
}
// TODO: Use this.as('ms')?
export function valueOf () {
if (!this.isValid()) {
return NaN;
}
return (
this._milliseconds +
this._days * 864e5 +
(this._months % 12) * 2592e6 +
toInt(this._months / 12) * 31536e6
);
}
function makeAs (alias) {
return function () {
return this.as(alias);
};
}
export var asMilliseconds = makeAs('ms');
export var asSeconds = makeAs('s');
export var asMinutes = makeAs('m');
export var asHours = makeAs('h');
export var asDays = makeAs('d');
export var asWeeks = makeAs('w');
export var asMonths = makeAs('M');
export var asYears = makeAs('y');