diff --git a/lua/outline/config.lua b/lua/outline/config.lua
index ae9308d..606cd38 100644
--- a/lua/outline/config.lua
+++ b/lua/outline/config.lua
@@ -167,10 +167,7 @@ end
 ---@param conf table
 function M.get_preview_width(conf)
   if conf.relative_width then
-    local relative_width = math.max(
-      math.ceil(vim.o.columns * (conf.width / 100)),
-      conf.min_width
-    )
+    local relative_width = math.max(math.ceil(vim.o.columns * (conf.width / 100)), conf.min_width)
     return relative_width
   else
     return conf.width
@@ -182,10 +179,8 @@ end
 ---@return integer
 function M.get_preview_height(conf, outline_height)
   if conf.relative_height then
-    local relative_height = math.max(
-      math.ceil(outline_height * (conf.height / 100)),
-      conf.min_height
-    )
+    local relative_height =
+      math.max(math.ceil(outline_height * (conf.height / 100)), conf.min_height)
     return relative_height
   else
     return conf.height
diff --git a/lua/outline/init.lua b/lua/outline/init.lua
index f02ecef..7f46d2a 100644
--- a/lua/outline/init.lua
+++ b/lua/outline/init.lua
@@ -2,8 +2,8 @@ local Sidebar = require('outline.sidebar')
 local cfg = require('outline.config')
 local highlight = require('outline.highlight')
 local providers = require('outline.providers.init')
-local utils = require('outline.utils.init')
 local symbols = require('outline.symbols')
+local utils = require('outline.utils.init')
 
 local M = {
   ---@type outline.Sidebar[]
diff --git a/lua/outline/providers/man.lua b/lua/outline/providers/man.lua
index dff17dc..8af98e8 100644
--- a/lua/outline/providers/man.lua
+++ b/lua/outline/providers/man.lua
@@ -12,7 +12,7 @@ M.fetch_symbols_sync = function(bufnr)
   local items = {}
   local last_header
   local prev_lnum = 0
-  local prev_line = ""
+  local prev_line = ''
   local function finalize_header()
     if last_header then
       last_header.range['end'].line = prev_lnum - 1
@@ -20,12 +20,12 @@ M.fetch_symbols_sync = function(bufnr)
     end
   end
   for lnum, line in ipairs(lines) do
-    local header = line:match("^[A-Z].+")
-    local padding, arg = line:match("^(%s+)(-.+)")
+    local header = line:match('^[A-Z].+')
+    local padding, arg = line:match('^(%s+)(-.+)')
     if header and lnum > 1 then
       finalize_header()
       local item = {
-        kind = str_to_kind["Interface"],
+        kind = str_to_kind['Interface'],
         name = header,
         level = 0,
         range = {
@@ -35,10 +35,10 @@ M.fetch_symbols_sync = function(bufnr)
       }
       item.selectionRange = item.range
       if
-          not config.post_parse_symbol
-          or config.post_parse_symbol(bufnr, item, {
-            backend_name = "man",
-            lang = "man",
+        not config.post_parse_symbol
+        or config.post_parse_symbol(bufnr, item, {
+            backend_name = 'man',
+            lang = 'man',
           })
           ~= false
       then
@@ -47,7 +47,7 @@ M.fetch_symbols_sync = function(bufnr)
       end
     elseif arg then
       local item = {
-        kind = str_to_kind["Interface"],
+        kind = str_to_kind['Interface'],
         name = arg,
         level = last_header and 1 or 0,
         parent = last_header,
@@ -58,10 +58,10 @@ M.fetch_symbols_sync = function(bufnr)
       }
       item.selectionRange = item.range
       if
-          not config.post_parse_symbol
-          or config.post_parse_symbol(bufnr, item, {
-            backend_name = "man",
-            lang = "man",
+        not config.post_parse_symbol
+        or config.post_parse_symbol(bufnr, item, {
+            backend_name = 'man',
+            lang = 'man',
           })
           ~= false
       then
diff --git a/lua/outline/sidebar.lua b/lua/outline/sidebar.lua
index 246bc76..d04ce37 100644
--- a/lua/outline/sidebar.lua
+++ b/lua/outline/sidebar.lua
@@ -388,7 +388,7 @@ function Sidebar:__goto_location(change_focus)
   end
 
   if not vim.api.nvim_win_is_valid(self.code.win) then
-    vim.notify("outline.nvim: Code window closed", vim.log.levels.WARN)
+    vim.notify('outline.nvim: Code window closed', vim.log.levels.WARN)
     return
   end
 
diff --git a/lua/outline/symbols.lua b/lua/outline/symbols.lua
index 9a18390..753d1a3 100644
--- a/lua/outline/symbols.lua
+++ b/lua/outline/symbols.lua
@@ -47,7 +47,9 @@ end
 
 -- use a stub if lspkind is missing or not configured
 local lspkind = {
-  symbolic = function(kind, opts) return '' end
+  symbolic = function(kind, opts)
+    return ''
+  end,
 }
 
 ---@param kind string|integer
diff --git a/lua/outline/view.lua b/lua/outline/view.lua
index 755d47c..5fd0b84 100644
--- a/lua/outline/view.lua
+++ b/lua/outline/view.lua
@@ -26,13 +26,13 @@ function View:setup_view(split_command)
 
   -- create a split
   vim.cmd(split_command)
-  
+
   -- get current (outline) window and attach our buffer to it
   self.win = vim.api.nvim_get_current_win()
   vim.api.nvim_win_set_buf(self.win, self.buf)
 
   -- resize if split_command not specify width like "25vsplit"
-  if split_command:match("%d+") == nil then
+  if split_command:match('%d+') == nil then
     -- resize to a % of the current window size
     vim.cmd('vertical resize ' .. cfg.o.outline_window.width)
   end