JavaScript/TypeScript implementation of MoQT (Media over QUIC Transport), an IETF protocol for real-time media delivery over QUIC.

• Multi-draft support — drafts 07 through 17
• Stateless codec — encode/decode all MoQT control messages and data stream headers
• Session state machine — FSM-based protocol validation per draft
• Trace recording — capture sessions with configurable detail levels
• Cross-runtime — works in Node.js, Bun, Deno, and browsers
• Zero dependencies — codec has no runtime dependencies

npm install @moqtap/codec

import { createCodec } from '@moqtap/codec';

const codec = createCodec({ draft: '17' });

// Decode
const result = codec.decodeMessage(bytes);
if (result.ok) {
  console.log(result.value.type);
}

// Encode
const encoded = codec.encodeMessage({
  type: 'setup',
  parameters: { max_request_id: 100n },
});

Or use draft-scoped imports for full type inference:

import { createDraft14Codec } from '@moqtap/codec/draft14';
const codec = createDraft14Codec();

See each package's README for full API documentation.

This is a Bun workspaces monorepo.

bun install          # install dependencies
bun run build        # build all packages
bun run test         # run tests
bun run lint         # check formatting and lint rules
bun run typecheck    # type-check all packages

MIT