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This is a SQL database implemented purely in TypeScript type annotations.
This means that it operates solely on types - you define a "database"
(just a type annotation) and then query it using some more type annotations.
It supports a subset of SQL, including SELECT (with conditions and joins), INSERT, UPDATE and DELETE statements.
See the live demo
You can install ts-sql in your own project with npm install @codemix/ts-sql or
yarn add @codemix/ts-sql (TypeScript 4.1 is required).
An example query looks like this:
import { Query } from "@codemix/ts-sql";
const db = {
things: [
{ id: 1, name: "a", active: true },
{ id: 2, name: "b", active: false },
{ id: 3, name: "c", active: true },
],
} as const;
type ActiveThings = Query<
"SELECT id, name AS nom FROM things WHERE active = true",
typeof db
>;
// ActiveThings is now equal to the following type:
type Expected = [{ id: 1; nom: "a" }, { id: 3; nom: "c" }];