fix: fix package import

Author: zdm

lib/package/npm.js

@@ -3,6 +3,7 @@ import NpmApi from "#core/api/npm";
 import SemanticVersion from "#core/semantic-version";
 import { TmpDir } from "#core/tmp";
 import { repeatAction } from "#core/utils";
+import Package from "#lib/package";
 
 export default class Npm {
     #pkg;
@@ -184,8 +185,7 @@ export default class Npm {
         res = await this.pkg.git.exec( [ `--work-tree=${ workTree.path }`, "checkout", commitRef, "--", "." ] );
         if ( !res.ok ) throw res;
 
-        const { "default": Package } = await import( "#lib/package" ),
-            pkg = new Package( workTree.path );
+        const pkg = new Package( workTree.path );
 
         // pack
         res = await pkg.npm.api.pack( {