Decorator to log async method

logAction.ts

export const logAction = (name: string) => {
  return (target, key, descriptor) => {
    if(descriptor === undefined){
      descriptor = Object.getOwnPropertyDescriptor(target, key);
    }

    const originalMethod: Function = descriptor.value;

    descriptor.value = async function() {
      const args: Array<any> = [];
      for(let i = 0, iMax = arguments.length; i < iMax; i++){
        args[i] = arguments[i];
      }

      const result = await originalMethod.apply(this, args);
      console.log(`Call ${name}(${JSON.stringify(args)}) returns : ${JSON.stringify(result)}`);
      return result;
    }

    return descriptor;
  }
}