add singleton decorators

dist/index.cjs

@@ -19,7 +19,9 @@ var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: tru
 // src/index.ts
 var src_exports = {};
 __export(src_exports, {
-  ZError: () => ZError
+  SINGLETON_KEY: () => SINGLETON_KEY,
+  ZError: () => ZError,
+  singleton: () => singleton
 });
 module.exports = __toCommonJS(src_exports);
 
@@ -30,8 +32,24 @@ var ZError = class {
     this.message = message;
   }
 };
+
+// src/decorators/singleton.ts
+var SINGLETON_KEY = Symbol();
+var singleton = (classTarget) => new Proxy(classTarget, {
+  construct(target, argumentsList, newTarget) {
+    if (target.prototype !== newTarget.prototype) {
+      return Reflect.construct(target, argumentsList, newTarget);
+    }
+    if (!target[SINGLETON_KEY]) {
+      target[SINGLETON_KEY] = Reflect.construct(target, argumentsList, newTarget);
+    }
+    return target[SINGLETON_KEY];
+  }
+});
 // Annotate the CommonJS export names for ESM import in node:
 0 && (module.exports = {
-  ZError
+  SINGLETON_KEY,
+  ZError,
+  singleton
 });
 //# sourceMappingURL=index.cjs.map

dist/index.cjs.map

@@ -1 +1 @@
-{"version":3,"sources":["../src/index.ts","../src/common/ZError.ts"],"sourcesContent":["export { ZError } from './common/ZError'","\nexport class ZError implements Error {\n  code: string\n  statusCode?: number\n  message: string\n  name: string\n\n  constructor(statusCode: number, message: string) {\n    this.statusCode = statusCode\n    this.message = message\n  }\n}\n"],"mappings":";;;;;;;;;;;;;;;;;;;AAAA;AAAA;AAAA;AAAA;AAAA;;;ACCO,IAAM,SAAN,MAA8B;AAAA,EAMnC,YAAY,YAAoB,SAAiB;AAC/C,SAAK,aAAa;AAClB,SAAK,UAAU;AAAA,EACjB;AACF;","names":[]}
+{"version":3,"sources":["../src/index.ts","../src/common/ZError.ts","../src/decorators/singleton.ts"],"sourcesContent":["export { ZError } from './common/ZError'\nexport * from './decorators/singleton'","\nexport class ZError implements Error {\n  code: string\n  statusCode?: number\n  message: string\n  name: string\n\n  constructor(statusCode: number, message: string) {\n    this.statusCode = statusCode\n    this.message = message\n  }\n}\n","/**\n * 单例化一个class\n * 使用方法:\n * @singleton\n * class Test {}\n * new Test() === new Test() // returns `true`\n * 也可以不使用 decorator\n * const TestSingleton = singleton(Test)\n * new TestSingleton() === new TestSingleton() //returns 'true'\n */\n\nexport const SINGLETON_KEY = Symbol()\n\nexport type Singleton<T extends new (...args: any[]) => any> = T & {\n  [SINGLETON_KEY]: T extends new (...args: any[]) => infer I ? I : never\n}\nexport const singleton = <T extends new (...args: any[]) => any>(classTarget: T) =>\n  new Proxy(classTarget, {\n    construct(target: Singleton<T>, argumentsList, newTarget) {\n      // Skip proxy for children\n      if (target.prototype !== newTarget.prototype) {\n        return Reflect.construct(target, argumentsList, newTarget)\n      }\n      if (!target[SINGLETON_KEY]) {\n        target[SINGLETON_KEY] = Reflect.construct(target, argumentsList, newTarget)\n      }\n      return target[SINGLETON_KEY]\n    },\n  })\n"],"mappings":";;;;;;;;;;;;;;;;;;;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;;;ACCO,IAAM,SAAN,MAA8B;AAAA,EAMnC,YAAY,YAAoB,SAAiB;AAC/C,SAAK,aAAa;AAClB,SAAK,UAAU;AAAA,EACjB;AACF;;;ACAO,IAAM,gBAAgB,OAAO;AAK7B,IAAM,YAAY,CAAwC,gBAC/D,IAAI,MAAM,aAAa;AAAA,EACrB,UAAU,QAAsB,eAAe,WAAW;AAExD,QAAI,OAAO,cAAc,UAAU,WAAW;AAC5C,aAAO,QAAQ,UAAU,QAAQ,eAAe,SAAS;AAAA,IAC3D;AACA,QAAI,CAAC,OAAO,aAAa,GAAG;AAC1B,aAAO,aAAa,IAAI,QAAQ,UAAU,QAAQ,eAAe,SAAS;AAAA,IAC5E;AACA,WAAO,OAAO,aAAa;AAAA,EAC7B;AACF,CAAC;","names":[]}

dist/index.d.cts

@@ -1 +1,19 @@
 export { ZError } from './common/ZError.cjs';
+
+/**
+ * 单例化一个class
+ * 使用方法:
+ * @singleton
+ * class Test {}
+ * new Test() === new Test() // returns `true`
+ * 也可以不使用 decorator
+ * const TestSingleton = singleton(Test)
+ * new TestSingleton() === new TestSingleton() //returns 'true'
+ */
+declare const SINGLETON_KEY: unique symbol;
+type Singleton<T extends new (...args: any[]) => any> = T & {
+    [SINGLETON_KEY]: T extends new (...args: any[]) => infer I ? I : never;
+};
+declare const singleton: <T extends new (...args: any[]) => any>(classTarget: T) => T;
+
+export { SINGLETON_KEY, type Singleton, singleton };

dist/index.d.ts

@@ -1 +1,19 @@
 export { ZError } from './common/ZError.js';
+
+/**
+ * 单例化一个class
+ * 使用方法:
+ * @singleton
+ * class Test {}
+ * new Test() === new Test() // returns `true`
+ * 也可以不使用 decorator
+ * const TestSingleton = singleton(Test)
+ * new TestSingleton() === new TestSingleton() //returns 'true'
+ */
+declare const SINGLETON_KEY: unique symbol;
+type Singleton<T extends new (...args: any[]) => any> = T & {
+    [SINGLETON_KEY]: T extends new (...args: any[]) => infer I ? I : never;
+};
+declare const singleton: <T extends new (...args: any[]) => any>(classTarget: T) => T;
+
+export { SINGLETON_KEY, type Singleton, singleton };

dist/index.js

@@ -5,7 +5,23 @@ var ZError = class {
     this.message = message;
   }
 };
+
+// src/decorators/singleton.ts
+var SINGLETON_KEY = Symbol();
+var singleton = (classTarget) => new Proxy(classTarget, {
+  construct(target, argumentsList, newTarget) {
+    if (target.prototype !== newTarget.prototype) {
+      return Reflect.construct(target, argumentsList, newTarget);
+    }
+    if (!target[SINGLETON_KEY]) {
+      target[SINGLETON_KEY] = Reflect.construct(target, argumentsList, newTarget);
+    }
+    return target[SINGLETON_KEY];
+  }
+});
 export {
-  ZError
+  SINGLETON_KEY,
+  ZError,
+  singleton
 };
 //# sourceMappingURL=index.js.map

dist/index.js.map

@@ -1 +1 @@
-{"version":3,"sources":["../src/common/ZError.ts"],"sourcesContent":["\nexport class ZError implements Error {\n  code: string\n  statusCode?: number\n  message: string\n  name: string\n\n  constructor(statusCode: number, message: string) {\n    this.statusCode = statusCode\n    this.message = message\n  }\n}\n"],"mappings":";AACO,IAAM,SAAN,MAA8B;AAAA,EAMnC,YAAY,YAAoB,SAAiB;AAC/C,SAAK,aAAa;AAClB,SAAK,UAAU;AAAA,EACjB;AACF;","names":[]}
+{"version":3,"sources":["../src/common/ZError.ts","../src/decorators/singleton.ts"],"sourcesContent":["\nexport class ZError implements Error {\n  code: string\n  statusCode?: number\n  message: string\n  name: string\n\n  constructor(statusCode: number, message: string) {\n    this.statusCode = statusCode\n    this.message = message\n  }\n}\n","/**\n * 单例化一个class\n * 使用方法:\n * @singleton\n * class Test {}\n * new Test() === new Test() // returns `true`\n * 也可以不使用 decorator\n * const TestSingleton = singleton(Test)\n * new TestSingleton() === new TestSingleton() //returns 'true'\n */\n\nexport const SINGLETON_KEY = Symbol()\n\nexport type Singleton<T extends new (...args: any[]) => any> = T & {\n  [SINGLETON_KEY]: T extends new (...args: any[]) => infer I ? I : never\n}\nexport const singleton = <T extends new (...args: any[]) => any>(classTarget: T) =>\n  new Proxy(classTarget, {\n    construct(target: Singleton<T>, argumentsList, newTarget) {\n      // Skip proxy for children\n      if (target.prototype !== newTarget.prototype) {\n        return Reflect.construct(target, argumentsList, newTarget)\n      }\n      if (!target[SINGLETON_KEY]) {\n        target[SINGLETON_KEY] = Reflect.construct(target, argumentsList, newTarget)\n      }\n      return target[SINGLETON_KEY]\n    },\n  })\n"],"mappings":";AACO,IAAM,SAAN,MAA8B;AAAA,EAMnC,YAAY,YAAoB,SAAiB;AAC/C,SAAK,aAAa;AAClB,SAAK,UAAU;AAAA,EACjB;AACF;;;ACAO,IAAM,gBAAgB,OAAO;AAK7B,IAAM,YAAY,CAAwC,gBAC/D,IAAI,MAAM,aAAa;AAAA,EACrB,UAAU,QAAsB,eAAe,WAAW;AAExD,QAAI,OAAO,cAAc,UAAU,WAAW;AAC5C,aAAO,QAAQ,UAAU,QAAQ,eAAe,SAAS;AAAA,IAC3D;AACA,QAAI,CAAC,OAAO,aAAa,GAAG;AAC1B,aAAO,aAAa,IAAI,QAAQ,UAAU,QAAQ,eAAe,SAAS;AAAA,IAC5E;AACA,WAAO,OAAO,aAAa;AAAA,EAC7B;AACF,CAAC;","names":[]}

src/decorators/singleton.ts

@@ -0,0 +1,29 @@
+/**
+ * 单例化一个class
+ * 使用方法:
+ * @singleton
+ * class Test {}
+ * new Test() === new Test() // returns `true`
+ * 也可以不使用 decorator
+ * const TestSingleton = singleton(Test)
+ * new TestSingleton() === new TestSingleton() //returns 'true'
+ */
+
+export const SINGLETON_KEY = Symbol()
+
+export type Singleton<T extends new (...args: any[]) => any> = T & {
+  [SINGLETON_KEY]: T extends new (...args: any[]) => infer I ? I : never
+}
+export const singleton = <T extends new (...args: any[]) => any>(classTarget: T) =>
+  new Proxy(classTarget, {
+    construct(target: Singleton<T>, argumentsList, newTarget) {
+      // Skip proxy for children
+      if (target.prototype !== newTarget.prototype) {
+        return Reflect.construct(target, argumentsList, newTarget)
+      }
+      if (!target[SINGLETON_KEY]) {
+        target[SINGLETON_KEY] = Reflect.construct(target, argumentsList, newTarget)
+      }
+      return target[SINGLETON_KEY]
+    },
+  })

src/index.ts

@@ -1 +1,2 @@
 export { ZError } from './common/ZError'
+export * from './decorators/singleton'