Ankit Khandelwal developed a data integrity enhancement for the ClipboardHealth/core-utils repository by implementing a custom ESLint rule targeting Mongoose upsert operations. Using TypeScript and JavaScript, Ankit introduced automated lint-time enforcement to require runValidators: true whenever upsert: true is specified in Mongoose update flows. This approach proactively prevents invalid data from being written during updates, reducing the risk of data integrity issues before code reaches production. By leveraging ESLint and deep knowledge of Mongoose, Ankit’s work strengthened code quality and maintainability across the codebase. The feature demonstrates a focused, practical solution to a common validation gap in database operations.