RichardBray · July 3, 2024 13:47 · Jul 3, 2024
diff --git a/decorators.js b/decorators.js
@@ -0,0 +1,39 @@
+function log(originalMethod: any, _context: any) {
+  function replacementMethod(this: any, ...args: any[]) {
+    // const startTime = performance.now();
+    console.log(`${originalMethod.name} START`);
+    const result = originalMethod.call(this, ...args);
+    console.log(`${originalMethod.name} END`);
+    // const endTime = performance.now();
+    // console.log(`Method ${originalMethod.name} took ${endTime - startTime} milliseconds`);
+    return "result: " + result;
+  }
+
+  return replacementMethod;
+}
+
+class Animal {
+  #name: string;
+
+  constructor(name: string) {
+    this.#name = name;
+  }
+
+  get name() {
+    return this.#name;
+  }
+
+  @log
+  makeSound(): string {
+    // let sound = "Sound";
+    console.log("running makeSound");
+    // if (this.#name === "Dog") sound = "Bark";
+    // return sound;
+    return "Sound";
+  }
+}
+
+const animal = new Animal("Dog");
+const sound = animal.makeSound();
+
+console.log(sound);