timeDecorator.ts

// usage:  @time

function time(target: any, context: ClassMethodDecoratorContext): any {
  const originalMethod = target;

  const resultMethod = async function (this: any, ...arg: any[]) {
    const start = performance.now();
    try {
      return await originalMethod.apply(this, arg);
    } catch (error) {
      console.log(error);
      throw error;
    } finally {
      const end = performance.now();
      console.log(`${String(context.name)} took ${end - start}`);
    }
  };

  return resultMethod;
}