Part 1 documents conventions that can be enforced or guided through IDE settings.
Part 2 here describes conventions that really depend on the developers following them. In particular, the conventions here are for JavaScript/TypeScript code.
This is another one of those things that every developer has an opinion of. Can't blame them us really. As much as programming is science, it is also an art. And artists have their own temperaments.
Regardless, unlike artists, developers have to work as a team. That means that they have to follow the team's conventions regardless of their preferences.
Many conventions can now be easily enforced via configurations settings, thanks to the ubiquity of VS Code and, to a lesser extent, Prettier.
This article looks at the easy steps we can take to enforce coding conventions easily for a Next.js project.