Install nvim-ufo

lua/config/settings.lua

@@ -12,9 +12,14 @@ opt.colorcolumn = "80"
 opt.clipboard:append({ "unnamed", "unnamedplus" })
 opt.expandtab = true
 opt.exrc = true
-opt.foldmethod = "syntax"
 opt.foldcolumn = "1"
-opt.foldlevelstart = 20
+opt.foldlevel = 99
+opt.foldlevelstart = 99
+opt.foldenable = true
+opt.fillchars:append({
+    foldopen = "",
+    foldclose = "",
+})
 opt.ignorecase = true
 opt.incsearch = true
 opt.inccommand = "split"

lua/plugins/lsp.lua

@@ -55,10 +55,15 @@ return {
         "neovim/nvim-lspconfig",
         config = function()
             local lspconfig = require('lspconfig')
+            local capabilities = vim.lsp.protocol.make_client_capabilities()
+            capabilities.textDocument.foldingRange = {
+                dynamicRegistration = false,
+                lineFoldingOnly = true
+            }
             for _, v in ipairs(vim.api.nvim_get_runtime_file('lua/lsp/*', true)) do
                 local name = vim.fn.fnamemodify(v, ':t:r')
                 local cfg = require("lsp/" .. name)
-                lspconfig[name].setup(cfg)
+                lspconfig[name].setup(vim.tbl_deep_extend("force", cfg, { capabilities }))
             end
         end
     },

lua/plugins/nvim-ufo.lua

@@ -0,0 +1,6 @@
+return {
+    'kevinhwang91/nvim-ufo',
+    dependencies = { 'kevinhwang91/promise-async' },
+
+    opts = {}
+}

lua/plugins/package-info.nvim.lua

@@ -1,5 +1,5 @@
 return {
     "vuki656/package-info.nvim",
-    requires = "MunifTanjim/nui.nvim",
+    dependencies = { "MunifTanjim/nui.nvim" },
     opts = {}
 }