anchor.diff:          add (BigPositionComponent1 Unchecked.defaultof<Vector3>)
       }
   
  -type title =
  -    {
  -        mutable text : string
  -    }
  -
  -type subtitle =
  -    {
  -        mutable text : string
  -    }
  -
  -type yAxis =
  -    {
  -        mutable title : title
  -        mutable max : int
  -    }
  -
  -type legend =
  -    {
  -        mutable layout : string
  -        mutable align : string
  -        mutable verticalAlign : string
  -    }
  -
  -type plotOptionsSeries =
  -    {
  -        mutable pointStart : int
  -    }
  -
  -type series<'T> =
  -    {
  -        mutable name : string
  -        data : 'T seq
  -    }
  -
  -type plotOptions =
  -    {
  -        mutable series : plotOptionsSeries
  -    }
  -
  -type Chart =
  -    {
  -        mutable title : title
  -        mutable subtitle : subtitle
  -        mutable yAxis : yAxis
  -        mutable legend : legend
  -        mutable plotOptions : plotOptions
  -        series : obj []
  -    }
  -
  -let perfRecord title iterations f =
  +let perfRecord title iterations f : (string * float seq) =
       let mutable total = 0.
       let data = ResizeArray ()
   
  
positive.code:         stopwatch.Stop ()
          data.Add stopwatch.Elapsed.TotalMilliseconds
  
      {
          name = title
          data = data
      }
  
  [<EntryPoint>]
  let main argv = 
  
negative.code: ﻿open Foom.Ecs
  
  open System
  open System.Collections.Generic
  
  open Foom.Collections
  
  type seriesItem<'T> =
      {
          name : string
          data : 'T seq
      }
  
  let createChart title (series : (string * 'T seq) seq) =
  
      let stringSeries = Newtonsoft.Json.JsonConvert.SerializeObject (series |> Seq.map (fun (name, data) -> { name = name; data = data }))
      sprintf """
  <script src="https://code.highcharts.com/highcharts.js"></script>
  <script src="https://code.highcharts.com/modules/exporting.js"></script>
  
  <div id="container"></div>
  
  <script>
  Highcharts.chart('container', {
  
      title: {
          text: '%s'
      },
  
      yAxis: {
          title: {
              text: 'ms'
          },
          max: 3
      },
      legend: {
          layout: 'vertical',
          align: 'right',
          verticalAlign: 'middle'
      },
  
      series: %s
  
  });
  </script>
      """ title stringSeries
  
  [<Struct>]
  type Vector3 =
  