@blackevin/protocol

The Blackevin wire format: opcodes and the frame codec.

Shared by the node and by @blackevin/client, so both ends encode and decode identically. Zero dependencies and no Node built-ins — it has to bundle for a browser.

import { encode, decode, Opcode } from "@blackevin/protocol";

const frame = decode(raw);
if (frame.op === Opcode.Message) { /* … */ }

The codec is a compatibility surface: a deployed client and a deployed node can be different versions of it at the same time. Adding an opcode is safe; changing what an existing one means is not. See CLAUDE.md.