require("bufferline").setup{
  options = {
    always_show_bufferline = true,
    mode = "buffers",
    color_icons = true,
    show_buffer_icons = true,
    show_buffer_close_icons = false,
    show_buffer_default_icon = true,
    show_close_icon = false,
    show_tab_indicators = true,
    separator_style = "slant",
    diagnostics = "nvim_lsp",
    diagnostics_update_in_insert = true,
    diagnostics_indicator = function(count, level, diagnostics_dict, context)
      local s = ""
      for e, n in pairs(diagnostics_dict) do
        local sym = e == "error" and " "
          or (e == "warning" and " " or "" )
        s = s .. n .. sym
      end
      return s
    end,
    numbers = function(opts)
      return string.format("[%s]%s", opts.id, opts.raise(opts.ordinal))
    end,
  }
}