diff --git a/packages/webpack-cli/lib/utils/arg-parser.js b/packages/webpack-cli/lib/utils/arg-parser.js
index e3ad2f1ada8..db76c2f7ef5 100644
--- a/packages/webpack-cli/lib/utils/arg-parser.js
+++ b/packages/webpack-cli/lib/utils/arg-parser.js
@@ -24,9 +24,6 @@ function argParser(options, args, argsOnly = false, name = '', helpFunction = un
     // Set parser name
     parser.name(name);
 
-    let commandNames = [];
-    let commandAliases = [];
-
     if (commands) {
         commands.reduce((parserInstance, cmd) => {
             parser
@@ -36,39 +33,11 @@ function argParser(options, args, argsOnly = false, name = '', helpFunction = un
                 .usage(cmd.usage)
                 .allowUnknownOption(true)
                 .action(async () => {
-                    return await require('../commands/ExternalCommand').run(
-                        defaultCommands[cmd.name],
-                        ...args.slice(args.indexOf(cmd.name) + 1 || args.indexOf(cmd.alias) + 1),
-                    );
+                    const cliArgs = args.slice(args.indexOf(cmd.name) + 1 || args.indexOf(cmd.alias) + 1);
+                    return await require('../commands/ExternalCommand').run(defaultCommands[cmd.name], ...cliArgs);
                 });
-            // if (cmd.flags) {
-            //     cmd.flags.forEach((subCmdFlag) => {
-            //         parser.commands.forEach((parsedArgs) => {
-            //             const cliFlag = subCmdFlag.type === Boolean ? subCmdFlag.name : `--${subCmdFlag.name} <value>`
-            //             const option = {
-            //                 flags: cliFlag,
-            //                 // required: true,
-            //                 // optional: false,
-            //                 // mandatory: false,
-            //                 // negate: false,
-            //                 // short: subCmdFlag.alias,
-            //                 // long: subCmdFlag.name,
-            //                 description: subCmdFlag.description,
-            //                 defaultValue: subCmdFlag.defaultValue,
-            //             };
-            //             if (parsedArgs._name === cmd.name) {
-            //                 parsedArgs.options.push(option);
-            //                 parsedArgs._actionHandler = ((option) => require('../commands/ExternalCommand').run(defaultCommands[cmd.name], option));
-            //                 console.log(parsedArgs)
-            //                 return;
-            //             }
-            //         });
-            //     });
-            // }
             return parser;
         }, parser);
-        commandNames = commands.map((cmd) => cmd.name);
-        commandAliases = commands.map((cmd) => cmd.alias);
 
         // Prevent default behavior
         parser.on('command:*', () => {});
@@ -130,7 +99,7 @@ function argParser(options, args, argsOnly = false, name = '', helpFunction = un
     const result = parser.parse(args, parseOptions);
     const opts = result.opts();
 
-    const unknownArgs = commands ? result.args.filter((arg) => !commandNames.includes(arg) && !commandAliases.includes(arg)) : result.args;
+    const unknownArgs = result.args;
 
     args.forEach((arg) => {
         const flagName = arg.slice(5);