personalized it a bit

lua/kickstart/plugins/indent_line.lua

@@ -1,8 +1,6 @@
 return {
   { -- Add indentation guides even on blank lines
     'lukas-reineke/indent-blankline.nvim',
-    -- Enable `lukas-reineke/indent-blankline.nvim`
-    -- See `:help ibl`
     main = 'ibl',
     opts = {},
   },

lua/kickstart/plugins/lint.lua

@@ -7,6 +7,10 @@ return {
       local lint = require 'lint'
       lint.linters_by_ft = {
         markdown = { 'markdownlint' },
+        javascript = { 'eslint' },
+        javascriptreact = { 'eslint' },
+        typescript = { 'eslint' },
+        typescriptreact = { 'eslint' },
       }
 
       -- To allow other plugins to add linters to require('lint').linters_by_ft,