fix(core): update

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/npmextra',
-  version: '5.0.9',
+  version: '5.0.10',
   description: 'do more with npm'
 }

ts/npmextra.classes.appdata.ts

@@ -85,10 +85,10 @@ export class AppData<T = any> {
             if (!parentKey) {
               await this.kvStore.writeKey(key, envValue);
             } else {
-              return undefined;
+              return envValue;
             }
           } else {
-            return null;
+            return undefined;
           }
         } else if (typeof mappingValue === 'object' && mappingValue !== null) {
           const resultObject = {};