hevi1991 · April 9, 2024 06:28 · Apr 9, 2024 · Oct 30, 2023 · Oct 30, 2023
diff --git a/exampleClass → singletonClass b/exampleClass → singletonClass
diff --git a/test.js b/test.js
@@ -1,4 +1,4 @@
-import Video from "./exampleClass.js";
+import Video from "./singletonClass.js";
 
 const v2 = new Video(`v2`);
 const v = new Video(`v`);

diff --git a/exampleClass b/exampleClass
@@ -0,0 +1,13 @@
+import { singleton } from "./singleton.js";
+
+class Video {
+  constructor(name) {
+    this.name = name;
+  }
+
+  play() {
+    console.log(`${this.name} is playing`);
+  }
+}
+
+export default singleton(Video);
diff --git a/singleton.js b/singleton.js
@@ -0,0 +1,14 @@
+export function singleton(clazz) {
+  let instance;
+
+  return new Proxy(clazz, {
+    construct(target, args) {
+      if (instance) {
+        return instance;
+      } else {
+        instance = new target(...args);
+        return instance;
+      }
+    },
+  });
+}
diff --git a/test.js b/test.js
@@ -0,0 +1,8 @@
+import Video from "./exampleClass.js";
+
+const v2 = new Video(`v2`);
+const v = new Video(`v`);
+v.play();
+v2.play();
+
+console.log(v === v2);