TSDL server package
@tsdl/bun, @tsdl/client, @tsdl/core, @tsdl/dashboard, @tsdl/express, @tsdl/gui, @tsdl/node, @tsdl/react-query, @tsdl/server, @tsdl/tree
TSDL, short for Type-Safe Data Layer, is a transport layer designed to blur the line between client and server side. TSDL is an end-to-end http communication framework that makes your backend a type-safe library for your frontend.
Example code
Server side
const router = tsdl.router({
auth: tsdl.router({
login: tsdl // ✓ structured and nestable routes, easily refactored
.use(logger) // ✓ reusable and powerful middleware support
.use(cors)
.input(loginSchema) // ✓ Zod, Ajv, Joi, Yup etc. or custom
.query(async ({ input }) => {
input.username // ✓ type inferred and input schema validated
const user = await db.findOne({
where: { username: input.username }
});
if (!user) {
// ✓ consistent and simple error handling
throw new TSDLError(404, "oops");
}
// ✓ return any JS value to the client
return user;
}),
}),
});
Client side
const onSubmit = async () => {
try {
const result = await tsdl.auth.login({
username: form.username, // ✓ write with confidence, inputs are type safe
});
// ✓ correctly inferred JSON serialized type
console.log(result);
} catch(e) {
// (e is unknown by default, this is just for type inference)
if (e instanceof TSDLError) {
// ✓ handle errors with confidence and consistency
console.log(e.message); // "oops"
console.log(e.code); // "Not Found"
console.log(e.numberCode); // 404
}
}
}
Ready to dive in? Getting started guide
Links
Features
Replaces
Rest APIsExpress/Koa/Nest etc.GraphQL
Introduces
- Type-safe back-end architecture
- Incrementally adoptable — works alongside existing Node infrastructure
-
Express.js support
@tsdl/express
- Built-in documentation
-
Generate un-opinionated AST of (documented) back-end
@tsdl/tree
- Type-safe and implicit input validation
- Type-safe and powerful middleware
- Modular API (install only what you need)
-
TanStack Query (FKA React Query) and SWR integration
@tsdl/react-query
- Consistent error handling
- And more...
Contributing
TSDL is developed as a monorepo using Nx for cloud runs and caching as well as Lerna for package linking and publishing.
- Clone the repository
git clone https://github.com/asplunds/tsdl.git tsdl
- Install dependencies (also initializes husky, & symlinks packages)
npm i
- Start hacking! Unit tests are located in /tests. For playing, use /playground (it's git ignored but included in workspaces). You can find examples in /examples.
Docs (nextra)
cd meta/docs
-
npm run dev
(assuming dependencies are installed) -
npm run build
check that it builds -
npm run start
preview
Publishing (access only)
Publish npm packages
- Run lints, build packages, bump package versions and publish
npm run release
Detecting circular dependencies
If you suspect you have caused a circular dependency (easily done in monorepos), you can run npx madge -c
in the project root.
Deploying documentation
Merge into branch preview
(for preview) or branch docs
for live. The CI/CD workflows will automatically build the Nextra documentation site and deploy it to Cloudflare.
Credits
TSDL was originally created by the developers at Enter Technologies, it's used internally on projects such as GyRank and markanvisning.se but was later open sourced.
- Nextra for documentation
- TanStack Query for the awesome query library
- gRPC/tRPC for inspiration (see migration guide from gRPC/tRPC to TSDL)
- Nx cloud runs
- Lerna monorepo tool
- TypeScript
- Vitest unit testing
This README is auto-generated