greft

Language-agnostic lossless binary serializer.

• Format spec: spec/FORMAT.md
• Conformance ports (JS / Python / Rust / Go): conformance/README.md
• Release / distribution options (npm 以外): docs/RELEASING.md

JS library (js/)

import { encode, decode } from "greft";

const bytes = encode(value); // value -> Uint8Array (lossless, cycles + shared identity)
const back = decode(bytes); // Uint8Array -> value

• Extension types — losslessly serialize values the core rejects (class instances, domain types, …) by registering a TypeExtension: encode(v, { types }) / decode(bytes, { types }).
• Decode hardening — decode(bytes, { maxNodes }) plus built-in bounds checks reject malformed/oversized input.
• JSON bridge — toJSON(value) / fromJSON(json) give a JSON.stringify-able view for inspecting or hand-editing fixtures (lossy on identity; rejects cycles).
• CLI — graft inspect <file.bin> (readable tree + summary) and graft diff <a.bin> <b.bin> (value-graph diff).