move to nvim lua and lsp

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

@@ -0,0 +1,31 @@
+local setup, null_ls = pcall(require, "null-ls")
+if not setup then
+  return
+end
+
+local formatting = null_ls.builtins.formatting
+local diagnostics = null_ls.builtins.diagnostics
+local augroup = vim.api.nvim_create_augroup("LspFormatting", {})
+
+null_ls.setup({
+  sources = {
+    formatting.prettier,
+    formatting.stylua,
+    diagnostics.eslint_d
+  },
+  -- format on save
+  on_attach = function(client, bufnr)
+    if client.supports_method("textDocument/formatting") then
+      vim.api.nvim_clear_autocmds({ group = augroup, buffer = bufnr })
+      vim.api.nvim_create_autocmd("BufWritePre", {
+        group = augroup,
+        buffer = bufnr,
+        callback = function()
+          -- on 0.8, you should use vim.lsp.buf.format({ bufnr = bufnr }) instead
+          vim.lsp.buf.format({ bufnr = bufnr })
+        end,
+      })
+    end
+  end,
+})
+