Contributed to the w3c/webauthn repository by enhancing WebAuthn JavaScript sample code to support EdDSA credentials and refining credential algorithm prioritization, enabling more secure and flexible authentication flows. Improved error handling, specifically addressing AbortError scenarios, to reduce integration risks and streamline developer onboarding. Updated multiple code snippets to prevent common implementation mistakes, thereby improving the overall developer experience and reducing support overhead. Leveraged expertise in JavaScript, cryptography, and the Web Authentication API to align sample code with evolving W3C specifications. The work focused on code maintainability and interoperability, supporting broader adoption of WebAuthn in downstream applications and services.