diff --git a/examples/filetree.lua b/examples/filetree.lua
index 1079e6b..d3b3998 100644
--- a/examples/filetree.lua
+++ b/examples/filetree.lua
@@ -121,7 +121,10 @@ end
 ---
 --- @return { expand: fun(path: string), collapse: fun(path: string) }
 local function _render_in_buffer(opts)
-  local winnr = vim.api.nvim_buf_call(opts.bufnr, function() return vim.api.nvim_get_current_win() end)
+  local winnr = vim.api.nvim_buf_call(
+    opts.bufnr,
+    function() return vim.api.nvim_get_current_win() end
+  )
   local s_tree_inf = tracker.create_signal(H.get_tree_inf(opts.root_path))
   local s_focused_path = tracker.create_signal(H.normalize(opts.focus_path or opts.root_path))
 
@@ -343,7 +346,11 @@ local function _render_in_buffer(opts)
           return ''
         end,
         n = function()
-          vim.schedule(function() controller.new(node.kind == 'file' and vim.fs.dirname(node.path) or node.path) end)
+          vim.schedule(
+            function()
+              controller.new(node.kind == 'file' and vim.fs.dirname(node.path) or node.path)
+            end
+          )
           return ''
         end,
         r = function()
@@ -363,7 +370,11 @@ local function _render_in_buffer(opts)
         local icon = node.expanded and '' or ''
         tb:put {
           current_line > 1 and '\n',
-          h('text', { hl = 'Constant', nmap = nmaps }, { string.rep('  ', level), icon, ' ', name }),
+          h(
+            'text',
+            { hl = 'Constant', nmap = nmaps },
+            { string.rep('  ', level), icon, ' ', name }
+          ),
         }
         if node.expanded then
           for _, child in ipairs(node.children) do
diff --git a/examples/picker.lua b/examples/picker.lua
index ab0dc55..8779443 100644
--- a/examples/picker.lua
+++ b/examples/picker.lua
@@ -7,7 +7,8 @@ local tracker = require 'u.tracker'
 
 local M = {}
 
-local S_EDITOR_DIMENSIONS = tracker.create_signal(utils.get_editor_dimensions(), 's:editor_dimensions')
+local S_EDITOR_DIMENSIONS =
+  tracker.create_signal(utils.get_editor_dimensions(), 's:editor_dimensions')
 vim.api.nvim_create_autocmd('VimResized', {
   callback = function()
     local new_dim = utils.get_editor_dimensions()
@@ -202,7 +203,9 @@ function M.create_picker(opts) -- {{{
 
   local s_filter_text_undebounced = tracker.create_signal('', 's:filter_text')
   w_input_buf:autocmd('TextChangedI', {
-    callback = safe_wrap(function() s_filter_text_undebounced:set(vim.api.nvim_get_current_line()) end),
+    callback = safe_wrap(
+      function() s_filter_text_undebounced:set(vim.api.nvim_get_current_line()) end
+    ),
   })
   local s_filter_text = s_filter_text_undebounced:debounce(50)
 
@@ -211,10 +214,15 @@ function M.create_picker(opts) -- {{{
   --
 
   local s_formatted_items = tracker.create_memo(function()
-    local function _format_item(item) return opts.format_item and opts.format_item(item) or tostring(item) end
+    local function _format_item(item)
+      return opts.format_item and opts.format_item(item) or tostring(item)
+    end
 
     local items = s_items:get()
-    return vim.iter(items):map(function(item) return { item = item, formatted = _format_item(item) } end):totable()
+    return vim
+      .iter(items)
+      :map(function(item) return { item = item, formatted = _format_item(item) } end)
+      :totable()
   end)
 
   -- When the filter text changes, update the filtered items:
@@ -247,7 +255,9 @@ function M.create_picker(opts) -- {{{
       local new_filtered_items = vim
         .iter(formatted_items)
         :enumerate()
-        :map(function(i, inf) return { orig_idx = i, item = inf.item, formatted = inf.formatted } end)
+        :map(
+          function(i, inf) return { orig_idx = i, item = inf.item, formatted = inf.formatted } end
+        )
         :filter(function(inf)
           if filter_text == '' then return true end
           local formatted_as_string = Renderer.markup_to_string({ tree = inf.formatted }):lower()
@@ -255,9 +265,7 @@ function M.create_picker(opts) -- {{{
           formatted_strings[inf.orig_idx] = formatted_as_string
           if use_plain_pattern then
             local x, y = formatted_as_string:find(filter_pattern, 1, true)
-            if x ~= nil and y ~= nil then
-              matches[inf.orig_idx] = formatted_as_string:sub(x, y)
-            end
+            if x ~= nil and y ~= nil then matches[inf.orig_idx] = formatted_as_string:sub(x, y) end
           else
             matches[inf.orig_idx] = string.match(formatted_as_string, filter_pattern)
           end
@@ -320,7 +328,9 @@ function M.create_picker(opts) -- {{{
       local filtered_items = s_filtered_items:get()
       local cursor_index = s_cursor_index:get()
       local indices = shallow_copy_arr(selected_indices)
-      if #indices == 0 and #filtered_items > 0 then indices = { filtered_items[cursor_index].orig_idx } end
+      if #indices == 0 and #filtered_items > 0 then
+        indices = { filtered_items[cursor_index].orig_idx }
+      end
       return {
         items = vim.iter(indices):map(function(i) return items[i] end):totable(),
         indices = indices,
@@ -397,8 +407,18 @@ function M.create_picker(opts) -- {{{
     end
     s_cursor_index:set(next_cursor_index)
   end
-  vim.keymap.set('i', '<C-n>', safe_wrap(action_next_line), { buffer = w_input_buf.bufnr, desc = 'Picker: next' })
-  vim.keymap.set('i', '<Down>', safe_wrap(action_next_line), { buffer = w_input_buf.bufnr, desc = 'Picker: next' })
+  vim.keymap.set(
+    'i',
+    '<C-n>',
+    safe_wrap(action_next_line),
+    { buffer = w_input_buf.bufnr, desc = 'Picker: next' }
+  )
+  vim.keymap.set(
+    'i',
+    '<Down>',
+    safe_wrap(action_next_line),
+    { buffer = w_input_buf.bufnr, desc = 'Picker: next' }
+  )
 
   local function action_prev_line()
     local max_line = #s_filtered_items:get()
@@ -406,8 +426,18 @@ function M.create_picker(opts) -- {{{
     if next_cursor_index - s_top_offset:get() < 1 then s_top_offset:set(s_top_offset:get() - 1) end
     s_cursor_index:set(next_cursor_index)
   end
-  vim.keymap.set('i', '<C-p>', safe_wrap(action_prev_line), { buffer = w_input_buf.bufnr, desc = 'Picker: previous' })
-  vim.keymap.set('i', '<Up>', safe_wrap(action_prev_line), { buffer = w_input_buf.bufnr, desc = 'Picker: previous' })
+  vim.keymap.set(
+    'i',
+    '<C-p>',
+    safe_wrap(action_prev_line),
+    { buffer = w_input_buf.bufnr, desc = 'Picker: previous' }
+  )
+  vim.keymap.set(
+    'i',
+    '<Up>',
+    safe_wrap(action_prev_line),
+    { buffer = w_input_buf.bufnr, desc = 'Picker: previous' }
+  )
 
   vim.keymap.set(
     'i',
@@ -417,7 +447,9 @@ function M.create_picker(opts) -- {{{
 
       local index = s_filtered_items:get()[s_cursor_index:get()].orig_idx
       if vim.tbl_contains(s_selected_indices:get(), index) then
-        s_selected_indices:set(vim.iter(s_selected_indices:get()):filter(function(i) return i ~= index end):totable())
+        s_selected_indices:set(
+          vim.iter(s_selected_indices:get()):filter(function(i) return i ~= index end):totable()
+        )
       else
         local new_selected_indices = shallow_copy_arr(s_selected_indices:get())
         table.insert(new_selected_indices, index)
@@ -429,7 +461,12 @@ function M.create_picker(opts) -- {{{
   )
 
   for key, fn in pairs(opts.mappings or {}) do
-    vim.keymap.set('i', key, safe_wrap(function() return fn(controller) end), { buffer = w_input_buf.bufnr })
+    vim.keymap.set(
+      'i',
+      key,
+      safe_wrap(function() return fn(controller) end),
+      { buffer = w_input_buf.bufnr }
+    )
   end
 
   -- Render:
@@ -499,10 +536,9 @@ function M.create_picker(opts) -- {{{
       if ephemeral == nil then ephemeral = false end
 
       if ephemeral and #indicies == 1 then
-        local matching_filtered_item_idx, _ = vim
-          .iter(s_filtered_items:get())
-          :enumerate()
-          :find(function(_idx, inf) return inf.orig_idx == indicies[1] end)
+        local matching_filtered_item_idx, _ = vim.iter(s_filtered_items:get()):enumerate():find(
+          function(_idx, inf) return inf.orig_idx == indicies[1] end
+        )
         if matching_filtered_item_idx ~= nil then s_cursor_index:set(indicies[1]) end
       else
         if not opts.multi then
@@ -721,7 +757,10 @@ function M.files(opts) -- {{{
       -- fast laptop. Show a warning and truncate the list in this case.
       if #lines >= opts.limit then
         if not job_inf.notified_over_limit then
-          vim.notify('Picker list is too large (truncating list to ' .. opts.limit .. ' items)', vim.log.levels.WARN)
+          vim.notify(
+            'Picker list is too large (truncating list to ' .. opts.limit .. ' items)',
+            vim.log.levels.WARN
+          )
           pcall(vim.fn.jobstop, job_inf.id)
           job_inf.notified_over_limit = true
         end
@@ -764,10 +803,7 @@ function M.buffers() -- {{{
       -- trim leading `cwd` from the buffer name:
       if item_name:sub(1, #cwd) == cwd then item_name = item_name:sub(#cwd + 1) end
 
-      return TreeBuilder.new()
-        :put(item.changed == 1 and '[+] ' or '    ')
-        :put(item_name)
-        :tree()
+      return TreeBuilder.new():put(item.changed == 1 and '[+] ' or '    '):put(item_name):tree()
     end,
 
     --- @params items { bufnr: number }[]
@@ -880,7 +916,9 @@ function M.lsp_code_symbols() -- {{{
     local item = items[1]
 
     -- Jump to the file/buffer:
-    local buf = vim.iter(vim.fn.getbufinfo { buflisted = 1 }):find(function(b) return b.name == item.filename end)
+    local buf = vim
+      .iter(vim.fn.getbufinfo { buflisted = 1 })
+      :find(function(b) return b.name == item.filename end)
     if buf ~= nil then
       vim.api.nvim_win_set_buf(0, buf.bufnr)
     else
diff --git a/lua/u/pos.lua b/lua/u/pos.lua
index 2a3d251..a3216d7 100644
--- a/lua/u/pos.lua
+++ b/lua/u/pos.lua
@@ -46,7 +46,11 @@ function Pos.invalid() return Pos.new(0, 0, 0, 0) end
 function Pos.__lt(a, b) return a.lnum < b.lnum or (a.lnum == b.lnum and a.col < b.col) end
 function Pos.__le(a, b) return a < b or a == b end
 function Pos.__eq(a, b)
-  return getmetatable(a) == Pos and getmetatable(b) == Pos and a.bufnr == b.bufnr and a.lnum == b.lnum and a.col == b.col
+  return getmetatable(a) == Pos
+    and getmetatable(b) == Pos
+    and a.bufnr == b.bufnr
+    and a.lnum == b.lnum
+    and a.col == b.col
 end
 function Pos.__add(x, y)
   if type(x) == 'number' then
diff --git a/lua/u/range.lua b/lua/u/range.lua
index 803d5e3..60af282 100644
--- a/lua/u/range.lua
+++ b/lua/u/range.lua
@@ -3,7 +3,7 @@ local Pos = require 'u.pos'
 -- Certain functions in the Range class yank text. In order to prevent unwanted
 -- highlighting, we intercept and discard some calls to the `on_yank` callback.
 local orig_on_yank = (vim.hl or vim.highlight).on_yank
-local on_yank_enabled = true;
+local on_yank_enabled = true
 ((vim.hl or vim.highlight) --[[@as any]]).on_yank = function(opts)
   if not on_yank_enabled then return end
   return orig_on_yank(opts)
diff --git a/spec/renderer_spec.lua b/spec/renderer_spec.lua
index 174b79a..8e38a2d 100644
--- a/spec/renderer_spec.lua
+++ b/spec/renderer_spec.lua
@@ -117,7 +117,11 @@ describe('Renderer', function()
       r:render {
         R.h('text', { hl = 'HighlightGroup1' }, {
           'Hello',
-          R.h('text', { hl = 'HighlightGroup2', extmark = { hl_group = 'HighlightGroup2' } }, ' World'),
+          R.h(
+            'text',
+            { hl = 'HighlightGroup2', extmark = { hl_group = 'HighlightGroup2' } },
+            ' World'
+          ),
         }),
       }