Worked on the kotlinx.serialization repository to enhance security and stability for Kotlin JS web targets by upgrading transitive dependencies in the kotlin-js-store/yarn.lock file. Focused on dependency management, the approach involved a targeted refresh of multiple JavaScript-related packages to address known vulnerabilities and improve build reliability. Leveraging skills in Kotlin and JavaScript, the work ensured that web target deployments remained compatible with supported versions while reducing risk exposure for downstream consumers. All changes were delivered in a single, traceable commit, demonstrating careful change management and a methodical approach to maintaining the integrity of the Kotlin JS ecosystem’s dependency chain.