We will introduce the theory of functional programming and how we applied it on frontend. https://2022.jsconf.kr/en/speakers/minsu-kim-changhui-lee Minsu Kim works as a web front-end developer at Devsisters. He is interested in functional programming, so he has studied and written technical blog posts on functional programming topics. Changhui Lee works as a platform backend developer at Devsisters. He has worked as a front-end and back-end engineer in a variety of fields. He wants to be a domain-independent problem solver