    /* <CoffeeScript>
    Time = require('./Time').Time
    timezoneJS = require('./../lib/timezone-js.js').timezoneJS
    utils = require('./utils')

    class Timeline
    </CoffeeScript> */
      /**
       * @class tzTime.Timeline
       *
       * Allows you to specify a timeline with weekend, holiday and non-work hours knocked out and timezone precision.
       *
       * ## Basic usage ##
       *
       *     {TimelineIterator, Timeline, Time} = require('../')
       *
       *     tl = new Timeline({
       *       startOn: '2011-01-03',
       *       endBefore: '2011-01-05',
       *     })
       *
       *     console.log(t.toString() for t in tl.getAll())
       *     # [ '2011-01-03', '2011-01-04' ]
       *
       * Notice how the endBefore, '2011-01-05', is excluded. Timelines are inclusive of the startOn and exclusive of the
       * endBefore. This allows the endBefore to be the startOn of the next with no overlap or gap. This focus on precision
       * pervades the design of the Time library.
       *
       * Perhaps the most common use of Timeline is to return a Timeline of ISOStrings shifted to the correct timezone.
       * Since ISOString comparisons give the expected chronological results and many APIs return their date/time stamps as
       * ISOStrings, it's convenient and surprisingly fast to do your own bucketing operations after you've gotten a Timeline
       * of ISOStrings.
       *
       *     console.log(tl.getAll('ISOString', 'America/New_York'))
       *     # [ '2011-01-03T05:00:00.000Z', '2011-01-04T05:00:00.000Z' ]
       *
       * ## More advanced usage ##
       *
       * Now let's poke at Timeline behavior a little more. Let's start by creating a more advanced Timeline:
       *
       *     tl = new Timeline({
       *       startOn: '2011-01-02',
       *       endBefore: '2011-01-07',
       *       holidays: [
       *         {month: 1, day: 1},  # Notice the lack of a year specification
       *         '2011-01-04'  # Got January 4 off also in 2011. Allows ISO strings.
       *       ]
       *     })
       *
       * `workDays` is already defaulted but you could have overridden it.
       *
       *     console.log(tl.workDays)
       *     # [ 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday' ]
       *
       * Another common use case is to get a Timeline to return child Timelines. You see, Timelines can be thought of as
       * time boxes with a startOn and an endBefore. You might have a big time box for the entire x-axis for a chart
       * but if you want to bucket raw data into each tick on the x-axis, you'll need to know where each sub-time box starts
       * and ends.
       *
       *     subTimelines = tl.getAll('Timeline')
       *     console.log((t.startOn.toString() + ' to ' + t.endBefore.toString() for t in subTimelines))
       *     # [ '2011-01-03 to 2011-01-05',
       *     #   '2011-01-05 to 2011-01-06',
       *     #   '2011-01-06 to 2011-01-07' ]
       *
       * Notice how the first subTimeline went all the way from 03 to 05. That's because we specified 04 as a holiday.
       * Timelines are contiguous without gaps or overlap. You can see that the endBefore of one subTimeline is always the startOn
       * of the next.
       *
       * Now, let's create a Timeline with `hour` granularity and show of the concept that Timelines also serve as time boxes by
       * learning about the contains() method.
       *
       *     tl2 = new Timeline({
       *       startOn: '2011-01-02T00',
       *       endBefore: '2011-01-07T00',
       *     })
       *
       * `startOn` is inclusive.
       *
       *     console.log(tl2.contains('2011-01-02T00'))
       *     # true
       *
       * But `endBefore` is exclusive
       *
       *     console.log(tl2.contains('2011-01-07T00'))
       *     # false
       *
       * But just before `endBefore` is OK
       *
       *     console.log(tl2.contains('2011-01-06T23'))
       *     # true
       *
       * All of the above comparisons assume that the `startOn`/`endBefore` boundaries are in the same timezone as the contains date.
       *
       * ## Timezone sensitive comparisions ##
       *
       * Now, let's look at how you do timezone sensitive comparisions.
       *
       * If you pass in a timezone, then it will shift the Timeline boundaries to that timezone to compare to the
       * date/timestamp that you pass in. This system is optimized to the pattern where you first define your boundaries without regard
       * to timezone. Christmas day is a holiday in any timezone. Saturday and Sunday are non work days in any timezone. The iteration
       * starts on July 10th; etc. THEN you have a bunch of data that you have stored in a database in GMT. Maybe you've pulled
       * it down from an API but the data is represented with ISOString. You then want to decide if the ISOString
       * is contained within the iteration as defined by a particular timezone, or is a Saturday, or is during workhours, etc.
       * The key concept to remember is that the timebox boundaries are shifted NOT the other way around. It says at what moment
       * in time July 10th starts on in a particular timezone and internally represents that in a way that can be compared to
       * an ISOString.
       *
       * So, when it's 3am in GMT on 2011-01-02, it's still 2011-01-01 in New York. Using the above `tl2` timeline, we say:
       *
       *     console.log(tl2.contains('2011-01-02T03:00:00.000Z', 'America/New_York'))
       *     # false
       *
       * But it's still 2011-01-06 in New York, when it's 3am in GMT on 2011-01-07
       *
       *     console.log(tl2.contains('2011-01-07T03:00:00.000Z', 'America/New_York'))
       *     # true
       *
       *
       * @constructor
       * @param {Object} config
       *
       * @cfg {Time/ISOString} [startOn] Unless it falls on a knocked out moment, this is the first value in the resulting Timeline
       *   If it falls on a knocked out moment, it will advance to the first appropriate moment after startOn.
       *   You must specify 2 out of 3 of startOn, endBefore, and limit.
       * @cfg {Time/ISOString} [endBefore] Must match granularity of startOn. Timeline will stop before returning this value.
       *   You must specify 2 out of 3 of startOn, endBefore, and limit.
       * @cfg {Number} [limit] You can specify limit and either startOn or endBefore and only get back this many.
       *   You must specify 2 out of 3 of startOn, endBefore, and limit.
       * @cfg {Number} [step = 1 or -1] Use -1 to march backwards from endBefore - 1. Currently any
       *    values other than 1 and -1 are not well tested.
       * @cfg {String} [granularity = granularity of startOn or endBefore] Used to determine the granularity of the ticks.
       *   Note, this can be different from the granularity of startOn and endBefore. For example:
       *
       *     {
       *       startOn: '2012-01', # Month Granularity
       *       endBefore: '2012-02', # Month Granularity
       *       granularity: Time.DAY # Day granularity
       *     }
       *
       * @cfg {String[]/String} [workDays =  ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday']] List of days of the
       *   week that you work on. You can specify this as an Array of Strings (['Monday', 'Tuesday', ...]) or a single comma
       *   seperated String ("Monday,Tuesday,...").
       * @cfg {Array} [holidays] An optional Array of either ISOStrings or JavaScript Objects (and you can mix and match). Example:
       *
       *     [{month: 12, day: 25}, {year: 2011, month: 11, day: 24}, "2012-12-24"]
       *
       *    Notice how you can leave off the year if the holiday falls on the same day every year.
       * @cfg {Object} [workDayStartOn = {hour: 0, minute: 0}] An optional object in the form {hour: 8, minute: 15}.
       *   If minute is zero it can be omitted. If workDayStartOn is later than workDayEndBefore, then it assumes that you
       *   work the night shift and your work  hours span midnight.
       *
       *   The use of workDayStartOn and workDayEndBefore only make sense when the granularity is "hour" or finer.
       *
       *   Note: If the business closes at 5:00pm, you'll want to leave workDayEndBefore to 17:00, rather
       *   than 17:01. Think about it, you'll be open 4:59:59.999pm, but you'll be closed at 5:00pm. This also makes all of
       *   the math work. 9am to 5pm means 17 - 9 = an 8 hour work day.
       * @cfg {Object} [workDayEndBefore = {hour: 24, minute: 60}] An optional object in the form {hour: 17, minute: 0}.
       *   If minute is zero it can be omitted.
       */
    /* <CoffeeScript>

          If minute is zero it can be omitted.
        @memoizedTicks = {}  # key: stringified parameters to getAll
        if config.endBefore?
          @endBefore = config.endBefore
          if @endBefore != 'PAST_LAST'
            if utils.type(@endBefore) == 'string'
              @endBefore = new Time(@endBefore)
            @granularity = @endBefore.granularity
        if config.startOn?
          @startOn = config.startOn
          if @startOn != 'BEFORE_FIRST'
            if utils.type(@startOn) == 'string'
              @startOn = new Time(@startOn)
            @granularity = @startOn.granularity
        if config.granularity?
          @granularity = config.granularity
          if @startOn?
            @startOn = @startOn.inGranularity(@granularity)
          if @endBefore?
            @endBefore = @endBefore.inGranularity(@granularity)
        unless @granularity
          throw new Error('Cannot determine granularity for Timeline.')
        if @startOn == 'BEFORE_FIRST'
          @startOn = new Time(@startOn, @granularity)
        if @endBefore == 'PAST_LAST'
          @endBefore == new Time(@endBefore, @granularity)
        if !@endBefore
          @endBefore = new Time('PAST_LAST', @granularity)
        if !@startOn
          @startOn = new Time('BEFORE_FIRST', @granularity)

        @limit = if config.limit? then config.limit else utils.MAX_INT

        if config.workDays?
          @workDays = config.workDays
        else if config.workdays?
          @workDays = config.workdays
        else
          @workDays = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday']
        if utils.type(@workDays) == 'string'
          @workDays = (utils.trim(s) for s in @workDays.split(','))
        @holidays = if config.holidays? then config.holidays else []
        for holiday, idx in @holidays
          if utils.type(holiday) == 'string'
            @holidays[idx] = new Time(holiday).getSegmentsAsObject()

        @workDayStartOn = if config.workDayStartOn? then config.workDayStartOn
        if @workDayStartOn?
          h = if @workDayStartOn.hour? then @workDayStartOn.hour else 0
          m = if @workDayStartOn.minute? then @workDayStartOn.minute else 0
          @startOnWorkMinutes = h * 60 + m
          if @startOnWorkMinutes < 0
            @startOnWorkMinutes = 0
        else
          @startOnWorkMinutes = 0

        @workDayEndBefore = if config.workDayEndBefore? then config.workDayEndBefore
        if @workDayEndBefore?
          h = if @workDayEndBefore.hour? then @workDayEndBefore.hour else 24
          m = if @workDayEndBefore.minute? then @workDayEndBefore.minute else 0
          @endBeforeWorkMinutes = h * 60 + m
          if @endBeforeWorkMinutes > 24 * 60
            @endBeforeWorkMinutes = 24 * 60
        else
          @endBeforeWorkMinutes = 24 * 60

        if config.step?
          @step = config.step
        else if config.endBefore? and @startOn?.greaterThan(@endBefore)
          @step = -1
        else if config.endBefore? and not config.startOn? and config.limit?
          @step = -1
        else
          @step = 1
        utils.assert(
          (config.startOn? and config.endBefore?) or
          (config.startOn? and config.limit? and @step > 0) or
          (config.endBefore? and config.limit? and @step < 0),
          'Must provide two out of "startOn", "endBefore", or "limit" and the sign of step must match.'
        )

      getIterator: (tickType = 'Time', tz, childGranularity) ->
    </CoffeeScript> */
        /**
         * @method getIterator
         * @member tzTime.Timeline
         * @param {String} [tickType] An optional String that specifies what type should be returned on each call to next().
         *   Possible values are 'Time' (default), 'Timeline', 'Date' (javascript Date Object), and 'ISOString'.
         * @param {String} [tz] A Sting specifying the timezone in the standard form,`America/New_York` for example. This is
         *   required if `tickType` is 'Date' or 'ISOString'.
         * @param {String} [childGranularity] When tickType is 'Timeline', this is the granularity for the startOn and endBefore of the
         *   Timeline that is returned.
         * @return {TimelineIterator}
         *
         * Returns a new TimelineIterator using this Timeline as the boundaries.
         */
    /* <CoffeeScript>
        return new TimelineIterator(this, tickType, tz, childGranularity)

      getAllRaw: (tickType = 'Time', tz, childGranularity) ->
    </CoffeeScript> */
        /**
         * @method getAllRaw
         * @member tzTime.Timeline
         * @param {String} [tickType] An optional String that specifies the type should be returned. Possible values are 'Time' (default),
         *    'Timeline', 'Date' (javascript Date Object), and 'ISOString'.
         * @param {String} [tz] A Sting specifying the timezone in the standard form,`America/New_York` for example. This is
         *    required if `tickType` is 'Date' or 'ISOString'.
         * @param {String} [childGranularity] When tickType is 'Timeline', this is the granularity for the startOn and endBefore of the
         *    Timeline that is returned.
         * @return {Time[]/Date[]/Timeline[]/String[]}
         *
         * Returns all of the points in the timeline. Note, this will come back in the order specified
         * by step so they could be out of chronological order. Use getAll() if they must be in chronological order.
         */
    /* <CoffeeScript>
        tli = @getIterator(tickType, tz, childGranularity)
        temp = []
        while tli.hasNext()
          temp.push(tli.next())
        return temp

      getAll: (tickType = 'Time', tz, childGranularity) ->
    </CoffeeScript> */
        /**
         * @method getAll
         * @member tzTime.Timeline
         * @param {String} [tickType] An optional String that specifies what should be returned. Possible values are 'Time' (default),
         *    'Timeline', 'Date' (javascript Date Object), and 'ISOString'.
         * @param {String} [tz] A Sting specifying the timezone in the standard form,`America/New_York` for example. This is
         *    required if `tickType` is 'Date' or 'ISOString'.
         * @param {String} [childGranularity] When tickType is 'Timeline', this is the granularity for the startOn and endBefore of the
         *    Timeline object that is returned.
         * @return {Time[]/Date[]/Timeline[]/String[]}
         *
         * Returns all of the points in the timeline in chronological order. If you want them in the order specified by `step`
         * then use getAllRaw(). Note, the output of this function is memoized so that subsequent calls to getAll() for the
         * same Timeline instance with the same parameters will return the previously calculated values. This makes it safe
         * to call it repeatedly within loops and means you don't need to worry about holding onto the result on the client
         * side.
         */
    /* <CoffeeScript>
        parameterKeyObject = {tickType}
        if tz?
          parameterKeyObject.tz = tz
        if childGranularity?
          parameterKeyObject.childGranularity = childGranularity
        parameterKey = JSON.stringify(parameterKeyObject)
        ticks = @memoizedTicks[parameterKey]
        unless ticks?
          ticks = @getAllRaw(tickType, tz, childGranularity)
          if ticks.length > 1
            if (ticks[0] instanceof Time and ticks[0].greaterThan(ticks[1])) or (utils.type(ticks[0]) is 'string' and ticks[0] > ticks[1] )
              ticks.reverse()
          @memoizedTicks[parameterKey] = ticks
        return ticks

      ticksThatIntersect: (startOn, endBefore, tz) ->
    </CoffeeScript> */
        /**
         * @method ticksThatIntersect
         * @member tzTime.Timeline
         * @param {Time/ISOString} startOn The start of the time period of interest
         * @param {Time/ISOString} endBefore The moment just past the end of the time period of interest
         * @param {String} tz The timezone you want to use for the comparison
         * @return {Array}
         *
         * Returns the list of ticks from this Timeline that intersect with the time period specified by the parameters
         * startOn and endBefore. This is a convenient way to "tag" a timebox as overlaping with particular moments on
         * your Timeline. A common pattern for Lumenize calculators is to use ticksThatIntersect to "tag" each snapshot
         * and then do groupBy operations with an OLAPCube.
         */
    /* <CoffeeScript>
        utils.assert(@limit == utils.MAX_INT, 'Cannot call `ticksThatIntersect()` on Timelines specified with `limit`.')
        out = []
        if utils.type(startOn) is 'string'
          utils.assert(utils.type(endBefore) is 'string', 'The type for startOn and endBefore must match.')
          isoDateRegExp = /\d\d\d\d-\d\d-\d\dT\d\d:\d\d:\d\d.\d\d\dZ/
          utils.assert(isoDateRegExp.test(startOn), 'startOn must be in form ####-##-##T##:##:##.###Z')
          utils.assert(isoDateRegExp.test(endBefore), 'endBefore must be in form ####-##-##T##:##:##.###Z')
          utils.assert(tz?, "Must specify parameter tz when submitting ISO string boundaries.")

          ticks = @getAll('ISOString', tz)
          if ticks[0] >= endBefore or ticks[ticks.length - 1] < startOn
            out = []
          else
            i = 0
            ticksLength = ticks.length
            while i < ticksLength and ticks[i] < startOn
              i++
            while i < ticksLength and ticks[i] < endBefore
              out.push(ticks[i])
              i++

        else if startOn instanceof Time
          utils.assert(endBefore instanceof Time, 'The type for startOn and endBefore must match.')
          startOn = startOn.inGranularity(@granularity)
          endBefore = endBefore.inGranularity(@granularity)
          if @endBefore.lessThan(@startOn)
            st = @endBefore
            en = @startOn
          else
            st = @startOn
            en = @endBefore
          if st.greaterThanOrEqual(endBefore) or en.lessThan(startOn)
            out = []
          else
            ticks = @getAll()
            i = 0
            ticksLength = ticks.length
            while i < ticksLength and ticks[i].lessThan(startOn)
              i++
            while i < ticksLength and ticks[i].lessThan(endBefore)
              out.push(ticks[i])
              i++
        else
          throw new Error("startOn must be a String or a Time object.")
        return out

      contains: (date, tz) ->
    </CoffeeScript> */
        /**
         * @method contains
         * @member tzTime.Timeline
         * @param {Time/Date/String} date can be either a JavaScript date object or an ISO-8601 formatted string
         * @param {String} [tz]
         * @return {Boolean} true if the date provided is within this Timeline.
         *
         * ## Usage: ##
         *
         * We can create a Timeline from May to just before July.
         *
         *     tl = new Timeline({
         *       startOn: '2011-05',
         *       endBefore: '2011-07'
         *     })
         *
         *     console.log(tl.contains('2011-06-15T12:00:00.000Z', 'America/New_York'))
         *     # true
         *
         */
    /* <CoffeeScript>
        utils.assert(@limit == utils.MAX_INT, 'Cannot call `contains()` on Timelines specified with `limit`.')
        if date instanceof Time
          return date.lessThan(@endBefore) and date.greaterThanOrEqual(@startOn)
        utils.assert(tz? or utils.type(date) != 'date', 'Timeline.contains() requires a second parameter (timezone) when the first parameter is a Date()')
        switch utils.type(date)
          when 'string'
            if tz?
              target = timezoneJS.parseISO(date)
            else
              target = new Time(date)
              return target.lessThan(@endBefore) and target.greaterThanOrEqual(@startOn)
          when 'date'
            target = date.getTime()  # !TODO: A - Need to use my getJSDate to be sure this behaves as expected... or test the hell out of this
          else
            throw new Error('Timeline.contains() requires that the first parameter be of type Time, String, or Date')
        startOn = @startOn.getJSDate(tz)
        endBefore = @endBefore.getJSDate(tz)
        return target < endBefore and target >= startOn

    class TimelineIterator
    </CoffeeScript> */
      /**
       * @class tzTime.TimelineIterator
       *
       * In most cases you'll want to call getAll() on Timeline. TimelineIterator is for use cases where you want to get the
       * values in the Timeline one at a time.
       *
       * You usually get a TimelineIterator by calling getIterator() on a Timeline object.
       *
       * Iterate through days, months, years, etc. skipping weekends and holidays that you
       * specify. It will also iterate over hours, minutes, seconds, etc. and skip times that are not
       * between the specified work hours.
       *
       * ## Usage ##
       *
       *     {TimelineIterator, Timeline, Time} = require('../')
       *
       *     tl = new Timeline({
       *       startOn:new Time({granularity: 'day', year: 2009, month:1, day: 1}),
       *       endBefore:new Time({granularity: 'day', year: 2009, month:1, day: 8}),
       *       workDays: 'Monday, Tuesday, Wednesday, Thursday, Friday',
       *       holidays: [
       *         {month: 1, day: 1},  # New Years day was a Thursday in 2009
       *         {year: 2009, month: 1, day: 2}  # Also got Friday off in 2009
       *       ]
       *     })
       *
       *     tli = tl.getIterator()
       *
       *     while (tli.hasNext())
       *       console.log(tli.next().toString())
       *
       *     # 2009-01-05
       *     # 2009-01-06
       *     # 2009-01-07
       *
       * Now, let's explore how Timelines and TimelineIterators are used together.
       *
       *     tl3 = new Timeline({
       *       startOn:new Time('2011-01-06'),
       *       endBefore:new Time('2011-01-11'),
       *       workDayStartOn: {hour: 9, minute: 0},
       *       workDayEndBefore: {hour: 11, minute: 0}  # Very short work day for demo purposes
       *     })
       *
       * You can specify that the tickType be Timelines rather than Time values. On each call to `next()`, the
       * iterator will give you a new Timeline with the `startOn` value set to what you would have gotten had you
       * requested that the tickType be Times. The `endBefore' of the returned Timeline will be set to the next value.
       * This is how you drill-down from one granularity into a lower granularity.
       *
       * By default, the granularity of the iterator will equal the `startOn`/`endBefore` of the original Timeline.
       * However, you can provide a different granularity (`hour` in the example below) for the iterator if you want
       * to drill-down at a lower granularity.
       *
       *     tli3 = tl3.getIterator('Timeline', undefined, 'hour')
       *
       *     while tli3.hasNext()
       *       subTimeline = tli3.next()
       *       console.log("Sub Timeline goes from #{subTimeline.startOn.toString()} to #{subTimeline.endBefore.toString()}")
       *       subIterator = subTimeline.getIterator('Time')
       *       while subIterator.hasNext()
       *         console.log('    Hour: ' + subIterator.next().hour)
       *
       *     # Sub Timeline goes from 2011-01-06T00 to 2011-01-07T00
       *     #     Hour: 9
       *     #     Hour: 10
       *     # Sub Timeline goes from 2011-01-07T00 to 2011-01-10T00
       *     #     Hour: 9
       *     #     Hour: 10
       *     # Sub Timeline goes from 2011-01-10T00 to 2011-01-11T00
       *     #     Hour: 9
       *     #     Hour: 10
       *
       * There is a lot going on here, so let's poke at it a bit. First, notice how the second sub-Timeline goes from the 7th to the
       * 10th. That's because there was a weekend in there. We didn't get hours for the Saturday and Sunday.
       *
       * The above approach (`tl3`/`tli3`) is useful for some forms of hand generated analysis, but if you are using Time with
       * Lumenize, it's overkill because Lumenize is smart enough to do rollups based upon the segments that are returned from the
       * lowest granularity Time. So you can just iterate over the lower granularity and Lumenize will automatically manage
       * the drill up/down to day/month/year levels automatically.
       *
       *     tl4 = new Timeline({
       *       startOn:'2011-01-06T00',  # Notice how we include the hour now
       *       endBefore:'2011-01-11T00',
       *       workDayStartOn: {hour: 9, minute: 0},
       *       workDayEndBefore: {hour: 11, minute: 0}  # Very short work day for demo purposes
       *     })
       *
       *     tli4 = tl4.getIterator('ISOString', 'GMT')
       *
       *     while tli4.hasNext()
       *       console.log(tli4.next())
       *
       *     # 2011-01-06T09:00:00.000Z
       *     # 2011-01-06T10:00:00.000Z
       *     # 2011-01-07T09:00:00.000Z
       *     # 2011-01-07T10:00:00.000Z
       *     # 2011-01-10T09:00:00.000Z
       *     # 2011-01-10T10:00:00.000Z
       *
       * `tl4`/`tli4` covers the same ground as `tl3`/`tli3` but without the explicit nesting.
       *
       *
       * @constructor
       * @param {Timeline} timeline A Timeline object
       * @param {String} [tickType] An optional String that specifies the type for the returned ticks. Possible values are 'Time' (default),
       *    'Timeline', 'Date' (javascript Date Object), and 'ISOString'.
       * @param {String} [childGranularity=granularity of timeline] When tickType is 'Timeline', this is the granularity for the startOn and endBefore of the
       *    Timeline that is returned.
       * @param {String} [tz] A Sting specifying the timezone in the standard form,`America/New_York` for example. This is
       *    required if `tickType` is 'Date' or 'ISOString'.
       */
    /* <CoffeeScript>
           required if `tickType` is 'Date' or 'ISOString'.
        utils.assert(@tickType in ['Time', 'Timeline', 'Date', 'ISOString'], "tickType must be 'Time', 'Timeline', 'Date', or 'ISOString'. You provided #{@tickType}.")
        utils.assert(@tickType != 'Date' or tz?, 'Must provide a tz (timezone) parameter when tickType is Date.')
        utils.assert(@tickType != 'ISOString' or tz?, 'Must provide a tz (timezone) parameter when returning ISOStrings.')
        # if timeline.granularity in ['Minute','Second', 'Millisecond']
          # console.error("Warning: iterating at granularity #{timeline.granularity} can be very slow.")
        @tz ?= tz
        if timeline instanceof Timeline
          @timeline = timeline
        else
          @timeline = new Timeline(timeline)
        unless @childGranularity?
          @childGranularity = timeline.granularity
        @reset()

      StopIteration = if typeof(StopIteration) == 'undefined' then utils.StopIteration else StopIteration

      reset: () ->
    </CoffeeScript> */
        /**
         * @method reset
         * @member tzTime.TimelineIterator
         *
         * Will go back to the where the iterator started.
         */
    /* <CoffeeScript>
        if @timeline.step > 0
          @current = new Time(@timeline.startOn)
        else
          @current = new Time(@timeline.endBefore)
          @current.decrement()
        @count = 0
        @_proceedToNextValid()

      _contains = (t, startOn, endBefore) ->
        return t.lessThan(endBefore) and t.greaterThanOrEqual(startOn)

      hasNext: () ->
    </CoffeeScript> */
        /**
         * @method hasNext
         * @member tzTime.TimelineIterator
         * @return {Boolean} Returns true if there are still things left to iterator over. Note that if there are holidays,
         *    weekends or non-workhours to skip, then hasNext() will take that into account.
         */
    /* <CoffeeScript>
        return _contains(@current, @timeline.startOn, @timeline.endBefore) and (@count < @timeline.limit)

      _shouldBeExcluded: () ->
        if @current._isGranularityCoarserThanDay()
          return false

        # Do everything below for granularies day and lower
        currentInDay = @current.inGranularity('day')
        unless @current.dowString() in @timeline.workDays
          return true
        for holiday in @timeline.holidays
          if (utils.match(holiday, currentInDay))
            return true
        if @timeline.granularity in ['hour', 'minute',' second', 'millisecond']
          currentMinutes = @current.hour * 60
          if @current.minute?
            currentMinutes += @current.minute
          if @timeline.startOnWorkMinutes <= @timeline.endBeforeWorkMinutes
            if (currentMinutes < @timeline.startOnWorkMinutes) or (currentMinutes >= @timeline.endBeforeWorkMinutes)
              return true
          else
            if @timeline.startOnWorkMinutes >= currentMinutes > @timeline.endBeforeWorkMinutes
              return true
        return false

      _proceedToNextValid: () ->
        while @hasNext() and @_shouldBeExcluded()
          if @timeline.step > 0
            @current.increment()
          else
            @current.decrement()

      next: () ->
    </CoffeeScript> */
        /**
         * @method next
         * @member tzTime.TimelineIterator
         * @return {Time/Timeline/Date/String} Returns the next value of the iterator. The start will be the first value returned unless it should
         *    be skipped due to holiday, weekend, or workhour knockouts.
         */
    /* <CoffeeScript>
        if !@hasNext()
          throw new StopIteration('Cannot call next() past end.')
        currentCopy = new Time(@current)
        @count++
        for i in [Math.abs(@timeline.step)..1]
          if @timeline.step > 0
            @current.increment()
          else
            @current.decrement()
          @_proceedToNextValid()
        switch @tickType
          when 'Time'
            return currentCopy
          when 'Date'
            return currentCopy.getJSDate(@tz)
          when 'ISOString'
            return currentCopy.getISOStringInTZ(@tz)
          when 'Timeline'
            config = {
              startOn: currentCopy.inGranularity(@childGranularity),
              endBefore: @current.inGranularity(@childGranularity),
              workDays: @timeline.workDays,
              holidays: @timeline.holidays,
              workDayStartOn: @timeline.workDayStartOn,
              workDayEndBefore: @timeline.workDayEndBefore
            }
            childtimeline = new Timeline(config)
            return childtimeline
          else
            throw new Error("You asked for tickType #{@tickType}. Only 'Time', 'Date', 'ISOString', and 'Timeline' are allowed.")

    exports.Timeline = Timeline
    exports.TimelineIterator = TimelineIterator

    </CoffeeScript> */