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publicKeyJwkFromPublicKeyBase58 method is present for Ed25519 suite but is missing for secp256k1 .

Suggested method:

const publicKeyJwkFromPublicKeyBase58 = value => {
  const publicKeyHex = publicKeyUInt8ArrayFromPublicKeyBase58(value).toString('hex')
  const publicKeyJwk = publicKeyJwkFromPublicKeyHex(publicKeyHex)

  return publicKeyJwk
}