diff --git a/lua/outline/preview.lua b/lua/outline/preview.lua
index 2054e2e..3d2ddca 100644
--- a/lua/outline/preview.lua
+++ b/lua/outline/preview.lua
@@ -147,9 +147,9 @@ end
 function Preview:close()
   -- TODO: Why was this in symbols-outline.nvim?
   -- if self.s:has_code_win() then
-    if self.win ~= nil and vim.api.nvim_win_is_valid(self.win) then
-      vim.api.nvim_win_close(self.win, true)
-    end
+  if self.win ~= nil and vim.api.nvim_win_is_valid(self.win) then
+    vim.api.nvim_win_close(self.win, true)
+  end
   -- end
 end
 
diff --git a/lua/outline/providers/nvim-lsp.lua b/lua/outline/providers/nvim-lsp.lua
index 5b482d9..fadb4e8 100644
--- a/lua/outline/providers/nvim-lsp.lua
+++ b/lua/outline/providers/nvim-lsp.lua
@@ -118,7 +118,8 @@ function M.rename_symbol(sidebar)
     bufnr = sidebar.code.buf,
     newName = new_name,
   }
-  local status, err = client.request_sync('textDocument/rename', params, request_timeout, sidebar.code.buf)
+  local status, err =
+    client.request_sync('textDocument/rename', params, request_timeout, sidebar.code.buf)
   if status == nil or status.err or err or status.result == nil then
     return false
   end
diff --git a/lua/outline/sidebar.lua b/lua/outline/sidebar.lua
index fb4bd05..ff1530b 100644
--- a/lua/outline/sidebar.lua
+++ b/lua/outline/sidebar.lua
@@ -1,5 +1,5 @@
-local View = require('outline.view')
 local Preview = require('outline.preview')
+local View = require('outline.view')
 local cfg = require('outline.config')
 local folding = require('outline.folding')
 local parser = require('outline.parser')
@@ -168,12 +168,16 @@ function Sidebar:setup_buffer_autocmd()
   if cfg.o.preview_window.auto_preview then
     vim.api.nvim_create_autocmd('CursorMoved', {
       buffer = 0,
-      callback = function() self.preview:show() end,
+      callback = function()
+        self.preview:show()
+      end,
     })
   else
     vim.api.nvim_create_autocmd('CursorMoved', {
       buffer = 0,
-      callback = function() self.preview:close() end,
+      callback = function()
+        self.preview:close()
+      end,
     })
   end
   if cfg.o.outline_window.auto_jump then
@@ -471,7 +475,12 @@ function Sidebar:_set_all_folded(folded, nodes)
 end
 
 function Sidebar:has_code_win()
-  return self.code.win and self.code.buf and self.code.win ~= 0 and self.code.buf ~= 0 and vim.api.nvim_win_is_valid(self.code.win) and vim.api.nvim_buf_is_valid(self.code.buf)
+  return self.code.win
+    and self.code.buf
+    and self.code.win ~= 0
+    and self.code.buf ~= 0
+    and vim.api.nvim_win_is_valid(self.code.win)
+    and vim.api.nvim_buf_is_valid(self.code.buf)
 end
 
 ---@see outline.follow_cursor