dotfiles/nvim/lua/plugins/tree-sitter.lua

-- tree-sitter integration with Neovim.
return {
  {
    "nvim-treesitter/nvim-treesitter",
    dependencies = {
      "nvim-treesitter/nvim-treesitter-textobjects",
    },
    build = ":TSUpdate",
    config = function()
      vim.opt.foldmethod = "expr"
      vim.opt.foldexpr = "nvim_treesitter#foldexpr()"

      require("nvim-treesitter.configs").setup({
        highlight = {
          enable = true,
          additional_vim_regex_highlighting = false,
        },

        incremental_selection = {
          enable = true,
          keymaps = {
            init_selection = "gnn",
            node_incremental = "grn",
            scope_incremental = "grc",
            node_decremental = "grm",
          },
        },

        indent = { enable = true },

        -- custom text objects with nvim-treesitter-textobjects
        -- I've just copied this from the README but they are reasonable additions to me.
        textobjects = {
          select = {
            enable = true,
            lookahead = true,

            keymaps = {
              ["af"] = "@function.outer",
              ["if"] = "@function.inner",
              ["ae"] = "@block.outer",
              ["ie"] = "@block.inner",
              ["ac"] = "@class.outer",
              ["ic"] = "@class.inner",
              ["aC"] = "@conditional.outer",
              ["iC"] = "@conditional.inner",
            },
          },
        },
      })
    end,
  },
}