Kysely

Judgement

What it is

Building block

What it does

A type-safe SQL query builder for TypeScript that autocompletes table and column names and infers result types, for PostgreSQL, MySQL, SQLite and other databases.

Adopt it when

You want to write SQL-shaped queries with full type checking rather than use an ORM.

Watch out

Still versioned below 1.0, and it has no built-in schema definition or migration generation, so you supply types yourself or generate them.

Ready for

Production-ready

Runs as

Library

Built with

TypeScript

How established

Established: started 5 years ago, latest release v0.29.8.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Kysely → TypeScript → Go → runs on a microchip

How compilers were built, back to punched paper tape

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