packages/bun-types/tests/sqlite.test-d.ts


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import { Database } from "bun:sqlite";
import { expectType } from "tsd";

const db = new Database(":memory:");
const query1 = db.query<
  { name: string; dob: number }, // return type first
  { $id: string }
>("select name, dob from users where id = $id");
query1.all({ $id: "asdf" }); // => {name: string; dob:string}[]

const query2 = db.query<
  { name: string; dob: number },
  [string, number] // pass tuple for positional params
>("select ?1 as name, ?2 as dob");
const allResults = query2.all("Shaq", 50); // => {name: string; dob:string}[]
const getResults = query2.get("Shaq", 50); // => {name: string; dob:string}[]
const runResults = query2.run("Shaq", 50); // => {name: string; dob:string}[]

expectType<{ name: string; dob: number }[]>(allResults);
expectType<{ name: string; dob: number } | null>(getResults);
expectType<void>(runResults);

const query3 = db.prepare<
  { name: string; dob: number }, // return type first
  [{ $id: string }]
>("select name, dob from users where id = $id");
const allResults3 = query3.all({ $id: "asdf" });
expectType<{ name: string; dob: number }[]>(allResults3);