squnType-safe SQL for Bun

SQLite, PostgreSQL, MySQL, and MSSQL — one unified API, no codegen, zero magic.

Tagged template SQL

Values are always parameterised. Nested fragments merge with renumbered placeholders. SQL injection is structurally impossible.

SQLite (bun:sqlite), PostgreSQL, MySQL (Bun native), and MSSQL (mssql). Switch adapters without changing query code.

Strict mode, noUncheckedIndexedAccess, exactOptionalPropertyTypes, verbatimModuleSyntax — all on. No any, no non-null assertions.

Define your schema with col() and defineTable(). Types are inferred — no build step, no generated files, no ORM magic.

Connection pooling, transactions with savepoints, deadlock retry, TVP support, prepared queries, read/write routing, failover groups.

Built for Bun 1.x. Uses bun:sqlite, Bun's native Postgres and MySQL clients, and Bun.sleep for backoff. Zero unnecessary dependencies.