require("bufferline").setup {
    animation = true,
    auto_hide = true,
    tabpages = true,
    closable = true,
    clickable = true,
    icon_separator_active = "",
    icon_separator_inactive = "▎",
    icon_close_tab = "",
    icon_close_tab_modified = "",
    icon_pinned = "車",
    separator_style = "slant",
    numbers = "buffer_id",
}

-- file sidebars
local nvim_tree_events = require("nvim-tree.events")
local bufferline_api = require("bufferline.api")

local function get_tree_size()
  return require"nvim-tree.view".View.width
end

nvim_tree_events.subscribe("TreeOpen", function()
  bufferline_api.set_offset(get_tree_size())
end)

nvim_tree_events.subscribe("Resize", function()
  bufferline_api.set_offset(get_tree_size())
end)

nvim_tree_events.subscribe("TreeClose", function()
  bufferline_api.set_offset(0)
end)