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map안에 await를 걸어두게 되면 실제로 동기화가 되지 않는 상태로 작동하게 된다. 블로그 참고) https://www.techiediaries.com/promise-all-map-async-await-example/ Promise.all() and map() with Async/Await by Example | Techiediaries In this quick example, we'll learn how to use Promise.all() and map() with Async/Await in JavaScript to impelemt certain scenarios that can't be implemented with for loops with async/await. Example of JavaS..