function getMSDecls(area, addRowSpan = false, addColumnSpan = false) {
  let result = [
    {
      prop: '-ms-grid-row',
      value: String(area.row.start)
    }
  ]
  if (area.row.span > 1 || addRowSpan) {
    result.push({
      prop: '-ms-grid-row-span',
      value: String(area.row.span)
    })
  }
  result.push({
    prop: '-ms-grid-column',
    value: String(area.column.start)
  })
  if (area.column.span > 1 || addColumnSpan) {
    result.push({
      prop: '-ms-grid-column-span',
      value: String(area.column.span)
    })
  }
  return result
}
Get an array of -ms- prefixed props and values
@param  {Object} [area] area object with column and row data
@param  {Boolean} [addRowSpan] should we add grid-column-row value?
@param  {Boolean} [addColumnSpan] should we add grid-column-span value?
@return {Array<Object>}