fix no register in map plugin

src/plugin-operators/map-plugin.ts

@@ -28,18 +28,17 @@ export class MapPluginBase<M extends Dict<PluginClass>>
   onApply() {
     const dict = this._getDict();
     for (const [key, plugin] of Object.entries(dict)) {
-      if (this.config[key] != null) {
-        const ctx =
-          typeof this.config[key] === 'object'
-            ? this.ctx.select(this.config[key])
-            : this.ctx;
-        const clonedPlugin = ClonePlugin(
-          plugin,
-          `${this.constructor.name}_${plugin.name}_dict_${key}`,
-          (o) => this._instanceMap.set(key, o),
-        );
-        ctx.plugin(clonedPlugin, this.config[key]);
-      }
+      if (this.config[key]?.[NoRegisterSym]) continue;
+      const ctx =
+        typeof this.config[key] === 'object'
+          ? this.ctx.select(this.config[key])
+          : this.ctx;
+      const clonedPlugin = ClonePlugin(
+        plugin,
+        `${this.constructor.name}_${plugin.name}_dict_${key}`,
+        (o) => this._instanceMap.set(key, o),
+      );
+      ctx.plugin(clonedPlugin, this.config[key]);
     }
   }
 
@@ -49,6 +48,8 @@ export class MapPluginBase<M extends Dict<PluginClass>>
   }
 }
 
+const NoRegisterSym = '__no_register' as const;
+
 function MappedConfig<M extends Dict<PluginClass>>(
   dict: M,
 ): ClassType<MapPluginToConfig<M>> {
@@ -60,10 +61,10 @@ function MappedConfig<M extends Dict<PluginClass>>(
       plugin['Config'] ||
       plugin['schema'] ||
       reflector.get('KoishiPredefineSchema', plugin);
-    SchemaProperty({ type: propertySchemaClass, default: undefined })(
-      PropertySchema.prototype,
-      key,
-    );
+    SchemaProperty({
+      type: propertySchemaClass,
+      default: { [NoRegisterSym]: true },
+    })(PropertySchema.prototype, key);
   }
   return PropertySchema;
 }

tests/map-plugin.spec.ts

@@ -19,7 +19,7 @@ class DressPlugin extends StarterPlugin(DressConfig) {
 }
 
 class SkirtConfig {
-  @SchemaProperty()
+  @SchemaProperty({ default: 'S' })
   size: string;
 }
 
@@ -60,4 +60,15 @@ describe('register map plugin instance', () => {
     expect(await app.command('skirtSize').execute({})).toBe('XL');
     expect(await app.command('wearingStrip').execute({})).toBe('pink');
   });
+  it('should partial register', async () => {
+    const app = new App();
+    app.plugin(WearingPlugin, {
+      dress: { color: 'red' },
+      strip: 'pink',
+    });
+    await app.start();
+    expect(await app.command('dressColor').execute({})).toBe('red');
+    expect(await app.command('wearingStrip').execute({})).toBe('pink');
+    expect(await app.command('skirtSize').execute({})).toBeFalsy();
+  });
 });