return {
  'kevinhwang91/nvim-ufo',
  dependencies = 'kevinhwang91/promise-async',
  event = 'VimEnter', -- needed for folds to load in time and comments closed
  keys = {
            -- stylua: ignore start
            { "zm", function() require("ufo").closeAllFolds() end, desc = "󱃄 Close All Folds" },
            { "zr", function() require("ufo").openFoldsExceptKinds { "comment", "imports" } end, desc = "󱃄 Open All Regular Folds" },
            { "zR", function() require("ufo").openFoldsExceptKinds {} end, desc = "󱃄 Open All Folds" },
            { "z1", function() require("ufo").closeFoldsWith(1) end, desc = "󱃄 Close L1 Folds" },
            { "z2", function() require("ufo").closeFoldsWith(2) end, desc = "󱃄 Close L2 Folds" },
            { "z3", function() require("ufo").closeFoldsWith(3) end, desc = "󱃄 Close L3 Folds" },
            { "z4", function() require("ufo").closeFoldsWith(4) end, desc = "󱃄 Close L4 Folds" },
    -- stylua: ignore end
  },
  init = function()
    -- INFO fold commands usually change the foldlevel, which fixes folds, e.g.
    -- auto-closing them after leaving insert mode, however ufo does not seem to
    -- have equivalents for zr and zm because there is no saved fold level.
    -- Consequently, the vim-internal fold levels need to be disabled by setting
    -- them to 99
    vim.opt.foldlevel = 99
    vim.opt.foldlevelstart = 99
  end,
  opts = {
    provider_selector = function(_, ft, _)
      -- INFO some filetypes only allow indent, some only LSP, some only
      -- treesitter. However, ufo only accepts two kinds as priority,
      -- therefore making this function necessary :/
      local lspWithOutFolding = { 'markdown', 'sh', 'css', 'html', 'python' }
      if vim.tbl_contains(lspWithOutFolding, ft) then
        return { 'treesitter', 'indent' }
      end
      return { 'lsp', 'indent' }
    end,
    -- when opening the buffer, close these fold kinds
    -- use `:UfoInspect` to get available fold kinds from the LSP
    close_fold_kinds_for_ft = {
      default = { 'imports', 'comment' },
    },
    open_fold_hl_timeout = 800,
    fold_virt_text_handler = function(virtText, lnum, endLnum, width, truncate)
      local hlgroup = 'NonText'
      local newVirtText = {}
      local suffix = '   ' .. tostring(endLnum - lnum)
      local sufWidth = vim.fn.strdisplaywidth(suffix)
      local targetWidth = width - sufWidth
      local curWidth = 0
      for _, chunk in ipairs(virtText) do
        local chunkText = chunk[1]
        local chunkWidth = vim.fn.strdisplaywidth(chunkText)
        if targetWidth > curWidth + chunkWidth then
          table.insert(newVirtText, chunk)
        else
          chunkText = truncate(chunkText, targetWidth - curWidth)
          local hlGroup = chunk[2]
          table.insert(newVirtText, { chunkText, hlGroup })
          chunkWidth = vim.fn.strdisplaywidth(chunkText)
          if curWidth + chunkWidth < targetWidth then
            suffix = suffix .. (' '):rep(targetWidth - curWidth - chunkWidth)
          end
          break
        end
        curWidth = curWidth + chunkWidth
      end
      table.insert(newVirtText, { suffix, hlgroup })
      return newVirtText
    end,
  },
}