Add completion

.config/nvim/lua/plugins/nvim-cmp.lua

@@ -0,0 +1,27 @@
+return {
+  "hrsh7th/nvim-cmp",
+  dependencies = {
+    "hrsh7th/cmp-nvim-lsp",
+    "hrsh7th/cmp-buffer",
+    "hrsh7th/cmp-path",
+    "hrsh7th/cmp-cmdline",
+  },
+  config = function()
+    local cmp = require("cmp")
+    cmp.setup({
+      snippet = {
+        expand = function(args)
+          vim.snippet.expand(args.body)
+        end
+      },
+      window = {
+        completion = cmp.config.window.bordered(),
+        documentation = cmp.config.window.bordered()
+      },
+      sources = cmp.config.sources({
+        { name = "nvim_lsp" },
+      },
+        {{ name = "buffer"}})
+    })
+  end
+}