chore: add stylua to format the codebase, and run on CI (#1055)

lua/nvim-tree/actions/system-open.lua

@@ -2,33 +2,34 @@ local uv = vim.loop
 
 local M = {
   config = {
-    is_windows = vim.fn.has('win32') == 1 or vim.fn.has('win32unix') == 1,
-    is_macos   = vim.fn.has('mac') == 1 or vim.fn.has('macunix') == 1,
-    is_unix    = vim.fn.has('unix') == 1,
-  }
+    is_windows = vim.fn.has "win32" == 1 or vim.fn.has "win32unix" == 1,
+    is_macos = vim.fn.has "mac" == 1 or vim.fn.has "macunix" == 1,
+    is_unix = vim.fn.has "unix" == 1,
+  },
 }
 
 function M.fn(node)
   if not M.config.system_open.cmd then
-    require'nvim-tree.utils'.warn("Cannot open file with system application. Unrecognized platform.")
+    require("nvim-tree.utils").warn "Cannot open file with system application. Unrecognized platform."
     return
   end
 
   local process = {
     cmd = M.config.system_open.cmd,
     args = M.config.system_open.args,
-    errors = '\n',
-    stderr = uv.new_pipe(false)
+    errors = "\n",
+    stderr = uv.new_pipe(false),
   }
   table.insert(process.args, node.link_to or node.absolute_path)
-  process.handle, process.pid = uv.spawn(process.cmd,
+  process.handle, process.pid = uv.spawn(
+    process.cmd,
     { args = process.args, stdio = { nil, nil, process.stderr }, detached = true },
     function(code)
       process.stderr:read_stop()
       process.stderr:close()
       process.handle:close()
       if code ~= 0 then
-        process.errors = process.errors .. string.format('NvimTree system_open: return code %d.', code)
+        process.errors = process.errors .. string.format("NvimTree system_open: return code %d.", code)
         error(process.errors)
       end
     end
@@ -38,14 +39,15 @@ function M.fn(node)
     error("\n" .. process.pid .. "\nNvimTree system_open: failed to spawn process using '" .. process.cmd .. "'.")
     return
   end
-  uv.read_start(process.stderr,
-    function(err, data)
-      if err then return end
-      if data then process.errors = process.errors .. data end
+  uv.read_start(process.stderr, function(err, data)
+    if err then
+      return
     end
-  )
+    if data then
+      process.errors = process.errors .. data
+    end
+  end)
   uv.unref(process.handle)
-
 end
 
 function M.setup(opts)
@@ -55,12 +57,12 @@ function M.setup(opts)
     if M.config.is_windows then
       M.config.system_open = {
         cmd = "cmd",
-        args = {'/c', 'start', '""'}
+        args = { "/c", "start", '""' },
       }
     elseif M.config.is_macos then
-      M.config.system_open.cmd = 'open'
+      M.config.system_open.cmd = "open"
     elseif M.config.is_unix then
-      M.config.system_open.cmd = 'xdg-open'
+      M.config.system_open.cmd = "xdg-open"
     end
   end
 end