import * as C from '../../constant';
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								export default (function (o, c, d) {
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								  o = o || {};
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								  var proto = c.prototype;
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								  var relObj = {
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								    future: 'in %s',
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								    past: '%s ago',
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								    s: 'a few seconds',
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								    m: 'a minute',
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								    mm: '%d minutes',
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								    h: 'an hour',
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								    hh: '%d hours',
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								    d: 'a day',
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								    dd: '%d days',
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								    M: 'a month',
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								    MM: '%d months',
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								    y: 'a year',
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								    yy: '%d years'
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								  };
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								  d.en.relativeTime = relObj;
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								  proto.fromToBase = function (input, withoutSuffix, instance, isFrom, postFormat) {
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								    var loc = instance.$locale().relativeTime || relObj;
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								    var T = o.thresholds || [{
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								      l: 's',
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								      r: 44,
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								      d: C.S
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								    }, {
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								      l: 'm',
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								      r: 89
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								    }, {
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								      l: 'mm',
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								      r: 44,
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								      d: C.MIN
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								    }, {
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								      l: 'h',
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								      r: 89
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								    }, {
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								      l: 'hh',
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								      r: 21,
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								      d: C.H
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								    }, {
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								      l: 'd',
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								      r: 35
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								    }, {
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								      l: 'dd',
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								      r: 25,
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								      d: C.D
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								    }, {
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								      l: 'M',
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								      r: 45
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								    }, {
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								      l: 'MM',
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								      r: 10,
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								      d: C.M
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								    }, {
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								      l: 'y',
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								      r: 17
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								    }, {
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								      l: 'yy',
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								      d: C.Y
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								    }];
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								    var Tl = T.length;
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								    var result;
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								    var out;
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								    var isFuture;
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								    for (var i = 0; i < Tl; i += 1) {
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								      var t = T[i];
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								      if (t.d) {
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								        result = isFrom ? d(input).diff(instance, t.d, true) : instance.diff(input, t.d, true);
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								      }
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								      var abs = (o.rounding || Math.round)(Math.abs(result));
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								      isFuture = result > 0;
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								      if (abs <= t.r || !t.r) {
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								        if (abs <= 1 && i > 0) t = T[i - 1]; // 1 minutes -> a minute, 0 seconds -> 0 second
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								        var format = loc[t.l];
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								        if (postFormat) {
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								          abs = postFormat("" + abs);
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								        }
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								        if (typeof format === 'string') {
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								          out = format.replace('%d', abs);
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								        } else {
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								          out = format(abs, withoutSuffix, t.l, isFuture);
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								        }
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								        break;
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								      }
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								    }
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								    if (withoutSuffix) return out;
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								    var pastOrFuture = isFuture ? loc.future : loc.past;
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								    if (typeof pastOrFuture === 'function') {
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								      return pastOrFuture(out);
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								    }
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								    return pastOrFuture.replace('%s', out);
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								  };
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								  function fromTo(input, withoutSuffix, instance, isFrom) {
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								    return proto.fromToBase(input, withoutSuffix, instance, isFrom);
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								  }
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								  proto.to = function (input, withoutSuffix) {
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								    return fromTo(input, withoutSuffix, this, true);
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								  };
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								  proto.from = function (input, withoutSuffix) {
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								    return fromTo(input, withoutSuffix, this);
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								  };
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								  var makeNow = function makeNow(thisDay) {
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								    return thisDay.$u ? d.utc() : d();
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								  };
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								  proto.toNow = function (withoutSuffix) {
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								    return this.to(makeNow(this), withoutSuffix);
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								  };
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								  proto.fromNow = function (withoutSuffix) {
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								    return this.from(makeNow(this), withoutSuffix);
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								  };
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								});
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