Feat: code formating with null-ls

nvim/.config/nvim/lua/config/null-ls.lua

@@ -0,0 +1,21 @@
+local null_ls_status_ok, null_ls = pcall(require, "null-ls")
+if not null_ls_status_ok then
+  return
+end
+
+-- https://github.com/jose-elias-alvarez/null-ls.nvim/tree/main/lua/null-ls/builtins/formatting
+local formatting = null_ls.builtins.formatting
+-- https://github.com/jose-elias-alvarez/null-ls.nvim/tree/main/lua/null-ls/builtins/diagnostics
+local diagnostics = null_ls.builtins.diagnostics
+
+null_ls.setup {
+  debug = false,
+  sources = {
+    formatting.prettier.with { extra_args = { "--no-semi", "--single-quote", "--jsx-single-quote" } },
+    formatting.black.with { extra_args = { "--fast" } },
+    diagnostics.flake8,
+  },
+}
+
+local map = vim.api.nvim_set_keymap
+map('n', '<leader>f', '<cmd>lua vim.lsp.buf.formatting_sync()<cr>', {})

nvim/.config/nvim/lua/lsp.lua

@@ -1,6 +1,22 @@
+local lsp_installer = require("nvim-lsp-installer")
+
+-- Register a handler that will be called for each installed server when it's ready (i.e. when installation is finished
+-- or if the server is already installed).
+lsp_installer.on_server_ready(function(server)
+    local opts = {}
+
+    -- (optional) Customize the options passed to the server
+    -- if server.name == "tsserver" then
+    --     opts.root_dir = function() ... end
+    -- end
+
+    -- This setup() function will take the provided server configuration and decorate it with the necessary properties
+    -- before passing it onwards to lspconfig.
+    -- Refer to https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md
+    server:setup(opts)
+end)
 
 local nvim_lsp = require('lspconfig')
-
 -- Use an on_attach function to only map the following keys
 -- after the language server attaches to the current buffer
 local on_attach = function(client, bufnr)

nvim/.config/nvim/lua/plugins.lua

@@ -1,7 +1,46 @@
--- Only required if you have packer configured as `opt`
-vim.cmd [[packadd packer.nvim]]
+local fn = vim.fn
 
-return require('packer').startup(function()
+-- Automatically install packer
+local install_path = fn.stdpath "data" .. "/site/pack/packer/start/packer.nvim"
+if fn.empty(fn.glob(install_path)) > 0 then
+  PACKER_BOOTSTRAP = fn.system {
+    "git",
+    "clone",
+    "--depth",
+    "1",
+    "https://github.com/wbthomason/packer.nvim",
+    install_path,
+  }
+  print "Installing packer close and reopen Neovim..."
+  vim.cmd [[packadd packer.nvim]]
+end
+
+-- Autocommand that reloads neovim whenever you save the plugins.lua file
+vim.cmd [[
+  augroup packer_user_config
+    autocmd!
+    autocmd BufWritePost plugins.lua source <afile> | PackerSync
+  augroup end
+]]
+
+-- Use a protected call so we don't error out on first use
+local status_ok, packer = pcall(require, "packer")
+if not status_ok then
+  return
+end
+
+-- Have packer use a popup window
+packer.init {
+  display = {
+    open_fn = function()
+      return require("packer.util").float { border = "rounded" }
+    end,
+  },
+}
+
+return packer.startup(function(use)
+    -- Packer can manage itself
+    use 'wbthomason/packer.nvim'
     use 'morhetz/gruvbox'
 
     -- Status line
@@ -19,7 +58,8 @@ return require('packer').startup(function()
     use {
         'neovim/nvim-lspconfig',
         requires = {
-            "hrsh7th/cmp-nvim-lsp"
+            "hrsh7th/cmp-nvim-lsp",
+            'williamboman/nvim-lsp-installer',
         }
     }
     use {
@@ -38,6 +78,12 @@ return require('packer').startup(function()
     use {'hrsh7th/cmp-nvim-lsp', after = 'nvim-cmp'}
     -- use {'f3fora/cmp-spell', after = 'nvim-cmp'}
 
+    -- for formatters and linters
+    use {
+        "jose-elias-alvarez/null-ls.nvim",
+        config = [[require('config.null-ls')]]
+    }
+
 
     use 'nvim-lua/popup.nvim'
     use {
@@ -80,4 +126,7 @@ return require('packer').startup(function()
         config = [[require('config.colorizer')]],
     }
 
+    if PACKER_BOOTSTRAP then
+        require("packer").sync()
+    end
 end)