RFC: Decorators support

[0xDing]

Big Thanks to @koskimas for writing this amazing library.

Did kysely consider supporting class-based type definition? Different from interface, class support decorators. And it's which helps us to implement more powerful and flexibility features.

For example:

Typescript property decorators could set metadata for the class. This means we can use the KyselyPlugin to create plugins like auto-update updatedAt, encrypted fields, hashed password, etc.

And this can also be used to solve the problem in #5

This can make kysely more powerful than sql builder and more flexible than ORM

[koskimas]

Thanks 🍻

I specifically didn't use classes by choice. They bring more problems than they solve. For example if you do something like Pick<SomeClass, 'someProperty'> for a class, the result is no longer the class in any way, even though the wanted result is "the class without other properties than someProperty".

I'm also the author of objection.js and one of the design choices I regret the most is using classes for defining the models.

Kysely doesn't try to do anything else but build and execute queries. You should implement everything else in a layer on top of Kysely.