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node_modules/moment/src/lib/duration/humanize.js 2.79 KB
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  import { createDuration } from './create';
  
  var round = Math.round;
  var thresholds = {
      ss: 44,         // a few seconds to seconds
      s : 45,         // seconds to minute
      m : 45,         // minutes to hour
      h : 22,         // hours to day
      d : 26,         // days to month
      M : 11          // months to year
  };
  
  // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
  function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
      return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
  }
  
  function relativeTime (posNegDuration, withoutSuffix, locale) {
      var duration = createDuration(posNegDuration).abs();
      var seconds  = round(duration.as('s'));
      var minutes  = round(duration.as('m'));
      var hours    = round(duration.as('h'));
      var days     = round(duration.as('d'));
      var months   = round(duration.as('M'));
      var years    = round(duration.as('y'));
  
      var a = seconds <= thresholds.ss && ['s', seconds]  ||
              seconds < thresholds.s   && ['ss', seconds] ||
              minutes <= 1             && ['m']           ||
              minutes < thresholds.m   && ['mm', minutes] ||
              hours   <= 1             && ['h']           ||
              hours   < thresholds.h   && ['hh', hours]   ||
              days    <= 1             && ['d']           ||
              days    < thresholds.d   && ['dd', days]    ||
              months  <= 1             && ['M']           ||
              months  < thresholds.M   && ['MM', months]  ||
              years   <= 1             && ['y']           || ['yy', years];
  
      a[2] = withoutSuffix;
      a[3] = +posNegDuration > 0;
      a[4] = locale;
      return substituteTimeAgo.apply(null, a);
  }
  
  // This function allows you to set the rounding function for relative time strings
  export function getSetRelativeTimeRounding (roundingFunction) {
      if (roundingFunction === undefined) {
          return round;
      }
      if (typeof(roundingFunction) === 'function') {
          round = roundingFunction;
          return true;
      }
      return false;
  }
  
  // This function allows you to set a threshold for relative time strings
  export function getSetRelativeTimeThreshold (threshold, limit) {
      if (thresholds[threshold] === undefined) {
          return false;
      }
      if (limit === undefined) {
          return thresholds[threshold];
      }
      thresholds[threshold] = limit;
      if (threshold === 's') {
          thresholds.ss = limit - 1;
      }
      return true;
  }
  
  export function humanize (withSuffix) {
      if (!this.isValid()) {
          return this.localeData().invalidDate();
      }
  
      var locale = this.localeData();
      var output = relativeTime(this, !withSuffix, locale);
  
      if (withSuffix) {
          output = locale.pastFuture(+this, output);
      }
  
      return locale.postformat(output);
  }