feat: convert commonjs to esm modules

src/commands/registration/cdup.js

@@ -1,10 +1,10 @@
-const cwd = require('./cwd').handler
+import cwd from './cwd.js'
 
-module.exports = {
+export default {
   directive: ['CDUP', 'XCUP'],
   handler: function (args) {
     args.command.arg = '..'
-    return cwd.call(this, args)
+    return cwd.handler.call(this, args)
   },
   syntax: '{{cmd}}',
   description: 'Change to Parent Directory'