jsoncompat (JavaScript/WebAssembly)

WebAssembly bindings for checking compatibility of evolving JSON schemas and generating example values from JavaScript.

Installation

npm install [email protected]

Public Interface

import init, { check_compat, generate_value } from "jsoncompat";

await init();

const oldSchema = '{"type":"string"}';
const newSchema = '{"type":["string","null"]}';

const ok = check_compat(oldSchema, newSchema, "deserializer");
const valueJson = generate_value(newSchema, 5);

• check_compat(old_schema_json, new_schema_json, role) -> boolean accepts "serializer", "deserializer", or "both" for role.
• generate_value(schema_json, depth) -> string returns one generated JSON value encoded as a string.

Both functions accept schemas as JSON strings and throw string-backed wasm-bindgen errors for invalid JSON, invalid schemas, unsupported compatibility features, known-unsatisfiable schemas, or retry exhaustion.

For full documentation and examples, see:

• https://jsoncompat.com
• https://github.com/ostrowr/jsoncompat

License

MIT