diff --git a/init.lua b/init.lua
index 853b79b..49d2e1b 100644
--- a/init.lua
+++ b/init.lua
@@ -1 +1,5 @@
-require('cosmic')
+local ok, err = pcall(require, 'cosmic')
+
+if not ok then
+  error(string.format('Error loading core...\n\n%s', err))
+end
diff --git a/lua/cosmic/config.lua b/lua/cosmic/config.lua
new file mode 100644
index 0000000..d7bda51
--- /dev/null
+++ b/lua/cosmic/config.lua
@@ -0,0 +1,13 @@
+local config = {
+  lsp = {
+    format_on_save = true,
+    servers = {
+      eslint = nil,
+      efm = {
+        -- disable_formatters = {'eslint'}
+      }
+    }
+  }
+}
+
+return config
diff --git a/lua/cosmic/lsp/providers/defaults.lua b/lua/cosmic/lsp/providers/defaults.lua
index 3d81fa5..7b46185 100644
--- a/lua/cosmic/lsp/providers/defaults.lua
+++ b/lua/cosmic/lsp/providers/defaults.lua
@@ -45,4 +45,6 @@ M.root_dir = function(fname)
     or util.root_pattern('tsconfig.json')(fname)
 end
 
+M.autostart = true
+
 return M
diff --git a/lua/cosmic/lsp/providers/efm.lua b/lua/cosmic/lsp/providers/efm.lua
index 942cbf2..4bfb13f 100644
--- a/lua/cosmic/lsp/providers/efm.lua
+++ b/lua/cosmic/lsp/providers/efm.lua
@@ -1,17 +1,28 @@
 local util = require('lspconfig').util
+local config = require('cosmic.config')
+local formatters = {}
 
-local stylua = {
+formatters.stylua = {
   formatCommand = 'stylua -s --quote-style AutoPreferSingle --indent-type Spaces --indent-width 2 -',
   formatStdin = true,
 }
 
-local prettier = {
+formatters.eslint = {
+  lintCommand = 'eslint_d -f unix --stdin --stdin-filename ${INPUT}',
+  lintStdin = true,
+  lintFormats = { '%f:%l:%c: %m' },
+  lintIgnoreExitCode = true,
+  formatCommand = 'eslint_d --stdin --fix-to-stdout --stdin-filename=${INPUT}',
+  formatStdin = true,
+}
+
+formatters.prettier = {
   --  formatCommand = 'prettier --stdin-filepath ${INPUT}',
   formatCommand = 'prettierd "${INPUT}"',
   formatStdin = true,
 }
 
-local filetypes = {
+--[[ local filetypes = {
   css = { prettier },
   html = { prettier },
   lua = { stylua },
@@ -23,8 +34,71 @@ local filetypes = {
   typescript = { prettier },
   typescriptreact = { prettier },
   yaml = { prettier },
+} ]]
+local filetype_defaults = {
+  css = {},
+  html = {},
+  lua = {},
+  javascript = {},
+  javascriptreact = {},
+  json = {},
+  markdown = {},
+  scss = {},
+  typescript = {},
+  typescriptreact = {},
+  yaml = {},
 }
 
+formatters.defaults = {
+  eslint = {
+    'javascript',
+    'javascriptreact',
+    'json',
+    'typescriptreact',
+    'typescript',
+  },
+  prettier = {
+    'css',
+    'html',
+    'javascript',
+    'javascriptreact',
+    'json',
+    'typescriptreact',
+    'typescript',
+    'markdown',
+    'scss',
+    'yaml',
+  },
+  stylua = { 'lua' }
+}
+
+local function is_formatter_disabled(formatter)
+  if config.lsp.servers.efm.disable_formatters then
+    for i in pairs(config.lsp.servers.efm.disable_formatters) do
+      local disabled = config.lsp.servers.efm.disable_formatters[i]
+      if disabled == formatter then
+        return true
+      end
+    end
+  end
+  return false
+end
+
+local languages = {}
+for formatter, filetypes in pairs(formatters.defaults) do
+  if not is_formatter_disabled(formatter) then
+    -- print(formatter)
+    for i in pairs(formatters.defaults[formatter]) do
+      local filetype = formatters.defaults[formatter][i]
+      -- print(filetype)
+      languages[filetype] = languages[filetype] or {}
+      table.insert(languages[filetype], { [formatter] = formatters[formatter] })
+    end
+  end
+end
+
+-- print(vim.inspect(languages))
+
 return {
   init_options = { documentFormatting = true, codeAction = true },
   root_dir = function(fname)
@@ -34,6 +108,6 @@ return {
       or util.root_pattern('.eslintrc.js')(fname)
       or util.root_pattern('tsconfig.json')(fname)
   end,
-  filetypes = vim.tbl_keys(filetypes),
-  settings = { languages = filetypes },
+  filetype_defaults = vim.tbl_keys(filetype_defaults),
+  settings = { languages = languages },
 }
diff --git a/lua/cosmic/lsp/providers/init.lua b/lua/cosmic/lsp/providers/init.lua
index 93e2e6c..7f98f1e 100644
--- a/lua/cosmic/lsp/providers/init.lua
+++ b/lua/cosmic/lsp/providers/init.lua
@@ -1,4 +1,5 @@
 local default_config = require('cosmic.lsp.providers.defaults')
+local config = require('cosmic.config')
 local lsp_installer = require('nvim-lsp-installer')
 
 lsp_installer.settings({
@@ -16,24 +17,59 @@ lsp_installer.settings({
   },
 })
 
+-- initial default serverse
+local requested_servers = {
+  'eslint',
+  'efm',
+  'tsserver',
+  'sumneko_lua',
+  'jsonls',
+  'cssls',
+  'html',
+  -- 'intelephense',
+  -- 'pyright',
+  -- 'gopls',
+}
+
+-- add servers set in config to requested_servers table
+for config_server in pairs(config.lsp.servers) do
+  if requested_servers[config_server] == nil then
+    table.insert(requested_servers, config_server)
+  end
+end
+
+-- go through requested_servers and ensure installation
+local lsp_installer_servers = require('nvim-lsp-installer.servers')
+for server in pairs(requested_servers) do
+  local requested_server = requested_servers[server]
+
+  local ok, serv = lsp_installer_servers.get_server(requested_server)
+  if ok then
+    if not serv:is_installed() then
+      serv:install()
+    end
+  end
+end
+
+--[[ Auto-format *.rs (rust) files prior to saving them
+     autocmd BufWritePre *.rs lua vim.lsp.buf.formatting_sync(nil, 1000) ]]
+
 lsp_installer.on_server_ready(function(server)
   local opts = default_config
+  --[[ if config.lsp.servers[server.name] == nil then
+    opts.autostart = false
+  end ]]
 
   if server.name == 'sumneko_lua' then
-    local config = require('cosmic.lsp.providers.lua')
-    opts = vim.tbl_deep_extend('force', opts, config)
+    opts = vim.tbl_deep_extend('force', opts, require('cosmic.lsp.providers.lua'))
   elseif server.name == 'tsserver' then
-    local config = require('cosmic.lsp.providers.tsserver')
-    opts = vim.tbl_deep_extend('force', opts, config)
+    opts = vim.tbl_deep_extend('force', opts, require('cosmic.lsp.providers.tsserver'))
   elseif server.name == 'efm' then
-    local config = require('cosmic.lsp.providers.efm')
-    opts = vim.tbl_deep_extend('force', opts, config)
+    opts = vim.tbl_deep_extend('force', opts, require('cosmic.lsp.providers.efm'))
   elseif server.name == 'jsonls' then
-    local config = require('cosmic.lsp.providers.jsonls')
-    opts = vim.tbl_deep_extend('force', opts, config)
+    opts = vim.tbl_deep_extend('force', opts, require('cosmic.lsp.providers.jsonls'))
   elseif server.name == 'eslint' then
-    local config = require('cosmic.lsp.providers.eslint')
-    opts = vim.tbl_deep_extend('force', opts, config)
+    opts = vim.tbl_deep_extend('force', opts, require('cosmic.lsp.providers.eslint'))
   end
 
   -- This setup() function is exactly the same as lspconfig's setup function (:help lspconfig-quickstart)