Cómo identificar correctamente los métodos sincrónicos que se han modificado para que sean asincrónicos al usar decoradores asincrónicos para decorar métodos sincrónicos.

 function AsyncDecorator() { return (target: any, propertyKey: string, descriptor: PropertyDescriptor) => { const originalMethod = descriptor.value; descriptor.value = async function (...args: any[]) { await sleep(100); const result = await originalMethod.apply(this, args); return result; }; return descriptor; }; } async function sleep(ms: number) { return new Promise(resolve => setTimeout(resolve, ms)); } class Test { // This function appears to be a synchronous function, but has been changed to an asynchronous function by an asynchronous decorator, but I didn't know that @AsyncDecorator() fun(): string { return 'Hello World!'; } } const result = new Test().fun(); console.log(result); // Expect results: Hello World! Actual result: Promise {<pending>}