fix: use cp and rmdir for copy_assets action (#1329)

Author: jorenbroekema

.changeset/violet-clocks-fetch.md

@@ -0,0 +1,5 @@
+---
+'style-dictionary': patch
+---
+
+Use cp and rmdir commands for `copy_assets` do and undo methods, since they affect directories, not files.

lib/common/actions.js

@@ -78,14 +78,21 @@ export default {
         // eslint-disable-next-line no-console
         console.log('Copying assets directory to ' + config.buildPath + 'assets');
       }
-      return vol.promises.copyFile('assets', config.buildPath + 'assets');
+      return vol.promises.cp(
+        'assets',
+        config.buildPath + 'assets',
+        // @ts-expect-error ICpOptions requires other props, this is a mistake in memfs types definition
+        {
+          recursive: true,
+        },
+      );
     },
     undo: async function (_, config, options, vol = fs) {
       if (config.log?.verbosity !== 'silent') {
         // eslint-disable-next-line no-console
         console.log('Removing assets directory from ' + config.buildPath + 'assets');
       }
-      return vol.promises.unlink(config.buildPath + 'assets');
+      return vol.promises.rmdir(config.buildPath + 'assets', { recursive: true });
     },
   },
 };