@helia/bitswap/src/utils/cid-prefix.ts

JavaScript implementation of the Bitswap data exchange protocol used by Helia

import ve from './varint-encoder.js'
import type { CID } from 'multiformats/cid'

export function cidToPrefix (cid: CID): Uint8Array {
  return ve([
    cid.version, cid.code, cid.multihash.code, cid.multihash.digest.byteLength
  ])
}