https://catsbi.oopy.io/fffa6930-ca30-4f7e-88b6-28011fde5867
https://hanamon.kr/javascript-this%EB%9E%80-%EB%AC%B4%EC%97%87%EC%9D%BC%EA%B9%8C/
https://ko.javascript.info/constructor-new
https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Statements/debugger
https://developer.mozilla.org/ko/docs/Web/JavaScript/Reference/Functions/rest_parameters
https://ko.javascript.info/property-accessors
https://ko.javascript.info/arrow-functions-basics
https://k0502s.tistory.com/179
https://ko.javascript.info/promise-basics
https://ko.javascript.info/generators#ref-1103