> For the complete documentation index, see [llms.txt](https://yamoo9.gitbook.io/typescript/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yamoo9.gitbook.io/typescript/decorator.md).

# 데코레이터

데코레이터(Decorator)는 [**ECMAScript에 새롭게 제안된 기능**](https://github.com/tc39/proposal-decorators#decorators)이며, TypeScript의 실험적 기능으로 **클래스 선언과 멤버에 대한 주석(annotations)과 메타 프로그래밍 구문을 모두 추가 할 수있는 방법**을 제공합니다.

### 데코레이터 사용 설정 <a href="#setting" id="setting"></a>

데코레이터를 TypeScript에서 사용하려면 `tsconfig.json` 설정 `experimentalDecorators` 값을 `true`로 설정해야 합니다. 환경 설정 없이 데코레이터를 사용하려면 컴파일 과정에서 오류 메시지를 출력합니다.

{% code title="tsconfig.json" %}

```javascript
{
  "compilerOptions": {
  ...  
  "experimentalDecorators": true,
  ...
  }
}
```

{% endcode %}

{% hint style="warning" %}
데코레이터는 차후 릴리스 시, 변경 될 수있는 실험 기능입니다.
{% endhint %}

### 참고

{% embed url="<https://github.com/tc39/proposal-decorators#decorators>" %}
ECMAScript TC39 - 클래스 데코레이터 제안입니다.
{% endembed %}

{% embed url="<https://www.typescriptlang.org/docs/handbook/decorators.html>" %}
TypeScript 핸드북 - 데코레이터에 대한 사용법입니다.
{% endembed %}


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