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node_modules/moment/src/lib/duration/as.js 1.98 KB
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  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');