nvim.nix/nvim/plugin/treesitter.lua

if vim.g.did_load_treesitter_plugin then
  return
end
vim.g.did_load_treesitter_plugin = true

require("nvim-treesitter.configs").setup {
    ensure_installed = {},
    highlight = {
      enable = true,
      disable = function(_, buf)
        local max_filesize = 100 * 1024 -- 100 KiB
        local ok, stats = pcall(vim.loop.fs_stat, vim.api.nvim_buf_get_name(buf))
        if ok and stats and stats.size > max_filesize then
          return true
        end
      end,
    },
    indent = {
        enable = true,
    },
    textobjects = {
        select = {
            enable = true,
            lookahead = true,
            keymaps = {
                ["af"] = "@function.outer",
                ["if"] = "@function.inner",
                ["aa"] = "@statement.outer",
                ["ia"] = "@parameter.inner",
            },
        },
        move = {
            enable = true,
            set_jumps = true, -- whether to set jumps in the jumplist
            goto_next_start = {
                [']]'] = '@function.outer',
                [']a'] = '@parameter.inner',
            },
            goto_previous_start = {
                ['[['] = '@function.outer',
                ['[a'] = '@parameter.inner',
            },
        },
        swap = {
            enable = true,
            swap_next = {
                ["s]"] = "@parameter.inner",
            },
            swap_previous = {
                ["s["] = "@parameter.inner",
            },
        }, },
    incremental_selection = {
        enable = true,
        keymaps = {
            init_selection = '<CR>',
            node_incremental = '<TAB>',
            node_decremental = '<S-TAB>',
        },
    },
}

require('treesitter-context').setup {
  max_lines = 3,
}