Supercharge Javascript Developer interview questions

The process took around 3 weeks altogether. I had a pleasant interview with the HR, which was pretty long, technical and informal. After that, I've got a homework which took 3 hours to fulfill. It was a pretty interesting task, I liked working on it, but unfortunately, my work wasn't enough for the fullstack senior position, so I didn't get hired. The HR provided me tons of feedback so I can work on it and apply again in 1 year.