It's the perfect solution to have Postgres without the need of Docker. With just `npm install`, you can have a Postgres instance on your computer. So, it's extremely easy to onboard a new developer in your team.
And, the good news, PGlite works perfectly with Next.js.
With only one command `npm install`, you can have a full-stack application, which also includes the database (a working Postgres). And, no need to have/install external tools.
You can take a look at: https://github.com/ixartz/SaaS-Boilerplate, it should give you some inspiration to structure your React apps with folder structure, component breakdown.
I didn't get the change to customize the default and built-in components from Clerk. So, it's hard for me to share any experience. But, I know you can do little customization using https://clerk.com/docs/components/customization/overview and play with CSS and Tailwind CSS. Maybe, for complex customization, it's preferable to not use the pre-built components and build it yourself.
Currently, I just feel the default UI from Clerk works good with Shadcn UI, both works great together. Definitively not perfect but do a great to job for a solo developer or for a small team.
And, I mostly using for advanced authentication features like user impersonation, multi-tenancy, roles & permission.
It took me 5 months to build my first SaaS from scratch, which is way too much. For example, I could use this time to focus on marketing.
During my development process, I realized that 80% of the features I implemented were also present in other SaaS products. This is why I created Nextless.js, a SaaS Boilerplate that includes all the necessary features for launching a successful SaaS.
It works perfectly!