Worked on the vtex/faststore repository to address stability issues related to iframe environments, focusing on improving the reliability of preview functionality. Implemented a targeted bug fix by conditionally importing Partytown on the client side, which prevented cross-origin errors when FastStore operated within iframes such as VTEX Preview. This technical approach involved dynamic import gating in the ThirdPartyScripts.tsx file, ensuring that Partytown scripts only load outside of iframe contexts. Utilized React for front end development and leveraged both JavaScript and TypeScript to deliver a solution that reduced preview failures and enhanced developer productivity by enabling safe, consistent preview experiences.