@json-schema-engine/dialect-draft04

JSON Schema draft-04 dialect for @json-schema-engine/core, assembled entirely through core's public dialect-authoring surface. draft-04's syntax differs from every later draft — id instead of $id, boolean exclusiveMinimum/exclusiveMaximum modifying sibling bounds, no const, contains, propertyNames, or if/then/else — so it ships separately rather than in core. Add this package when you need to validate draft-04 documents; they can coexist with every other draft in the same registry, including $refs across the dialect boundary. Needs @json-schema-engine/core installed alongside.

Install

npm install @json-schema-engine/dialect-draft04 @json-schema-engine/core

Example

import assert from "node:assert";
import { createEngine } from "@json-schema-engine/core";
import { registerDraft04 } from "@json-schema-engine/dialect-draft04";

const engine = createEngine();
registerDraft04(engine);

const uri = engine.registerSchema(
  {
    $schema: "http://json-schema.org/draft-04/schema#",
    minimum: 5,
    exclusiveMinimum: true, // draft-04: a boolean modifying `minimum`
  },
  "https://example.com/draft-04",
);

assert.equal(engine.evaluate(uri, 5).valid, false);
assert.equal(engine.evaluate(uri, 6).valid, true);

Status

Version 0.0.1 is published for initial public feedback on both the functionality and the documentation. APIs may change before 1.0. STATUS.md is the authoritative statement of what is built and what is staged.

Documentation

• User guide
• Dialects
• Conformance
• Repository

License

MIT