개념

<aside> 🍎 @Module() 데코레이터 주석이 달린 클래스

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역할

<aside> 🍎 Nest 가 어플리케이션 구조를 구성하는 데에 사용하는 메타데이터를 제공

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`providers`	The providers that will be instantiated by the Nest injector and that may be shared at least across this module.
`controllers`	The set of controllers defined in this module which have to be instantiated.
`imports`	The list of imported modules that export the providers which are required in this module.
`exports`	The subset of `providers` that are provided by this module and should be available in other modules which import this module. You can use either the provider itself or just its token (`provide` value).