add constructor in config schema

src/config.ts

@@ -4,7 +4,11 @@ import { RegisterSchema, DefineSchema } from 'schemastery-gen';
 
 @RegisterSchema()
 export class MemcachedCachePluginConfig {
-  @DefineSchema({ description: 'Memcached 服务器地址', default: 'localhost:11211' })
+  constructor(config: Partial<MemcachedCachePluginConfig>) {}
+  @DefineSchema({
+    description: 'Memcached 服务器地址',
+    default: 'localhost:11211',
+  })
   endpoint: string;
 
   @DefineSchema({
@@ -17,4 +21,5 @@ export class MemcachedCachePluginConfig {
   prefix: string;
 }
 
-export type MemcachedCachePluginConfigLike = Partial<MemcachedCachePluginConfig>;
+export type MemcachedCachePluginConfigLike =
+  Partial<MemcachedCachePluginConfig>;

src/plugin.ts

@@ -11,7 +11,7 @@ import * as EncodeBuffer from 'encoded-buffer';
 
 export default class MemcachedCache extends Cache {
   static schema = MemcachedCachePluginConfig;
-  
+
   protected start(): void | Promise<void> {}
   protected stop(): void | Promise<void> {}
   private logger = new Logger('memcached');