neovim/lua/plugins/treesitter.lua

require('nvim-treesitter.configs').setup {
  ensure_installed = { "lua", "rust", "elm", "python", "yaml", "toml" },
  auto_install = true,
  highlight = {
    enable = true,
    additional_vim_regex_highlighting=true,
  },
  ident = {
      enable = true,
  },
  rainbow = {
    enable = true,
    extended_mode = false,
    max_file_lines = nil,
  }
}

vim.api.nvim_set_hl(0, "@variable", { })
vim.api.nvim_set_hl(0, "@parameter", { })
vim.api.nvim_set_hl(0, "@field", { })