Worked on the Adyen/adyen-web repository to deliver a flexible session initialization control aimed at simplifying integration with externally managed sessions. Developed an internal flag in TypeScript to bypass the initial session setup when a session is already established, updating the initializeCore logic to respect this flag. This approach allowed sessionData to be conditionally included in submitDetails, ensuring accurate data flow and reducing redundant initialization steps. Focused on front end development using JavaScript and TypeScript, the work improved integration readiness with external session management systems and helped prevent potential race conditions, streamlining the setup process for future integrations.