anchor.diff:          | FlexDirection of string
           | FlexWrap of string
           | Height of float
  -        | JustifyContent of string
  +        | JustifyContent of JustifyContent
           | Left of float
           | Margin of float
           | MarginBottom of float
  
positive.code:         | FlexDirection of FlexDirection
          | FlexWrap of string
          | Height of float
          | JustifyContent of Alignment
          | Left of float
          | Margin of float
          | MarginBottom of float
  
negative.code:         | FlexDirection of FlexDirection
          | FlexWrap of string
          | Height of float
          | JustifyContent of JustifyContent
          | Left of float
          | Margin of float
          | MarginBottom of float
  