Seeing questions like "How do I test private methods?" or "Should I test private methods?" periodically appear in various communities made me think I should organize my thoughts on the topic someday....

For some time, my mind had become cluttered with various worries. In such situations, exercise and reading can be solutions. I was already exercising regularly, so I significantly increased my reading...

Among the ECMAScript class field specifications, there is Private field, also known as Private Property (hereinafter referred to as Private Property). The class field spec has reached Stage 3 (Candida...

At the company conference NHN FORWARD held in November 2019, we ran a Frontend Counseling Center to address concerns or questions about frontend development. There were various concerns, but I noticed...

What is Lazy Loading? I had a great opportunity to attend Google I/O 2019. While there weren't any groundbreaking web technology sessions, some web-related technologies introduced in certain sessions...