fix: build problem

src/types/cfgx.ts

@@ -7,8 +7,8 @@ export interface XBase {
   info: string
 }
 
-export interface Key extends XBase {}
-export interface Alias extends XBase {}
+export type Key = XBase
+export type Alias = XBase
 export interface Value extends XBase {
   option: { name: string; value: string }[]
 }