webauthn-json is deprecated in favor of browsers' native PublicKeyCredential API:
github/webauthn-json#94
We essentially had removed it in #31 but added it again in #43 for the moment as 1Password does not support the native API for the moment:
https://www.1password.community/discussions/1password/issues-with-publickeycredential-tojson-and-passkeys/158327