Database management is a vast and dynamic industry. There are a lot of nice schema migration tools: some are standalone, like Atlas, some are a part of a broader ecosystem, like Drizzle or Prisma. 

I prefer simplicity and narrow specialization over tools that try to solve everything, so my choice would be a migration tool that operates on top of bare SQL statements. I couldn’t find such a tool in the JavaScript ecosystem, so I figured this would make a great exercise.