return {
  {
    "nvim-treesitter/nvim-treesitter",
    opts = function(_, opts)
      vim.filetype.add({
        extension = {
          ejs = "ejs",
        },
      })
      vim.treesitter.language.register("javascript", { "ejs" })

      opts.ensure_installed = opts.ensure_installed or {}
      if type(opts.ensure_installed) == "table" and not vim.tbl_contains(opts.ensure_installed, "javascript") then
        table.insert(opts.ensure_installed, "javascript")
      end
    end,
  },
}