feat(neovim): use treesitter for folding

home-manager/neovim/lspconfig.lua

@@ -115,10 +115,21 @@ null_ls.setup({
 })
 
 -- setup lsp_lines
-local lsp_lines = require("lsp_lines")
-lsp_lines.setup()
+require("lsp_lines").setup()
+
+-- setup vim diagnostics
 vim.diagnostic.config({
     virtual_text = false,
+    signs = true,
+    update_in_insert = true,
+    underline = true,
+    severity_sort = false,
+    float = {
+        border = "rounded",
+        source = "always",
+        header = "",
+        prefix = "",
+    },
 })
 
 -- setup html languageserver

home-manager/neovim/options.lua

@@ -34,6 +34,10 @@ vim.opt.inccommand = "split"
 -- completion
 vim.opt.completeopt = "menu,menuone,noselect"
 
+-- folding
+vim.opt.foldmethod = "expr"
+vim.opt.foldexpr = 'nvim_treesitter#foldexpr()'
+
 -- set cursorline in active window
 vim.cmd([[
     augroup CursorLine
@@ -51,4 +55,3 @@ vim.cmd([[
         autocmd TermOpen * setlocal nonumber norelativenumber
     augroup END
 ]])
-

home-manager/neovim/treesitter.lua

@@ -1,8 +1,20 @@
 require('nvim-treesitter.configs').setup({
-    highlight = { enable = true, additional_vim_regex_highlighting = false },
     ensure_installed = {
         "bash", "c", "cpp", "css", "dockerfile", "hcl", "html", "javascript",
         "json", "latex", "lua", "markdown", "nix", "python", "rust", "svelte",
         "toml", "tsx", "typescript", "vim", "vue", "yaml"
-    }
+    },
+    auto_install = true,
+    highlight = {
+        enable = true,
+        additional_vim_regex_highlighting = false
+    },
+    indent = {
+        enable = true,
+    },
+    rainbow = {
+        enable = true,
+        extended_mode = true,
+        max_file_lines = nil,
+    },
 })