Show HN: Bun-sqlgen – Type-safe raw SQL for Bun, no ORM

ilbert

I write Bun.sql with raw SQL and no ORM, and the one thing I kept missing was types. You write a query, get back `any[]`, and hand-write a row type that silently drifts from the actual columns. Drizzle/Kysely fix this by moving the query into TypeScript, but then you're not really writing SQL anymore. bun-sqlgen goes the other way. You keep writing raw SQL queries, just give each one a name. A codegen step reads your migration `.sql` files, stands up a throwaway Postgres via PGlite (so no Docker) or SQLite, prepares every tagged query against it, and writes a `.d.ts` that maps each query name to its real result type. After that, plain `tsc` does the rest: `user.notExistingField` won't compile, and `display_name.length` gets flagged because the column is nullable. Nullability was the annoying part. Postgres's describe doesn't hand you per-column nullability, so I infer it from the query plan plus the catalog, with manual overrides for the cases that genuinely can't be inferred. SQLite works too. The runtime stays 100% Bun.sql, the generated file is the only artifact (commit it), and codegen is fast enough to rerun on save. It's early (v0.1, built it for my own projects) so I'd mostly like to hear where it falls over.

psc007

Can you make it work/ does it work with Porsager-Postgres in modnes which buns Postgres client is «based on»?

psc007

Support for postgis?

sHooKDT

Nice project, thanks! I was looking for something like that for quite a while. Any chance to get it to work with Node? Unfortunately in my opinion and experience Bun is not really suitable for production. Does it have anything special which makes this possible?

danr4

pretty cool

rankdiff

sqlc is worth a mention. https://sqlc.dev

genshii

This is cool, but when the very first paragraph of the readme is clearly LLM generated, it makes me doubt the quality of the project.

giovannibonetti

Those looking for a more mature solution in this space will probably enjoy SQLc [1]. It was initially developed for Go applications, but over the years it got pluggins for many other languages, including JavaScript/Typescript. [1] https://sqlc.dev/

allthetime

Kysely rules

zareith

This looks great. I love using pgtyped, but have missed a solution that works well for sqlite.

inline_always

pretty neat, what's the technical reason it has to be Bun only?

schultzer

I don’t understand why no one is making SQL a first class citizen in a language, there are tons of languages out there that are extendable, how hard can it be, enough of DSL and generated type-safe application code which is a DSL in reverse order.