email: ctx.email,
name: ctx.text({ min: 2 }),Valid by construction
Properties validate and normalize every value. Records reject undeclared keys, even in nested objects.
DOMAIN MODELING · BUILT ON TYPEBOX
Model the domain.
Keep the invariants.
Your domain has rules.
Give them a place to live.
A TypeScript framework for properties, entities and use cases. Validate at the boundary. Keep your model consistent. Bring your own infrastructure.
Open source. MIT licensed. Yours to build with.
user.tsTypeScript
import { blueprintOf, entityOf } from "@afora/core"; class User extends entityOf( blueprintOf((ctx) => ({ name: ctx.text, email: ctx.email, token: ctx.string, })), { unique: ["email"], sensitive: ["token"] },) {} const user = new User({ name: "Ada", email: " Ada@Example.com ", token: "keep-it-private",}); JSON.stringify(user);// email → "ada@example.com"// token → "********"One definition. Types and runtime, in agreement.
AT HOME IN YOUR STACK
BunNode.js ≥ 22Browsers & WorkersTypeBoxStandard Schema V1
FROM THE INSIDE OUT
Small pieces. A coherent model.
Start with a value. Compose your way
to the behavior of your application.
03 / Record
Holds the value. Rejects undeclared keys at any depth.
class User extends recordOf(UserProps) {}
const user = new User({ name: "Ada", email: "ada@example.com" });EnvironmentValidated configuration, available where your domain needs it.
RULES THAT TRAVEL WITH YOUR DATA
Make the model do the work.
JSON.stringify(account);
// token: "********"Private stays private
Sensitive properties are masked by toJSON(), at any depth. Serialization respects the rules of your model.
error.layer; // "use-case"
error.trace; // the path to the failureErrors with a sense of place
Every exception carries its layer and a trace. Follow a failure from the boundary back to the property that caused it.
YOUR DOMAIN, YOUR INFRASTRUCTURE
Define once.
Connect where it matters.
The framework is the code you own and run. Compose commands and outputs, then connect the tools your application needs.