Worked on the growthbook/growthbook repository to enhance the safety and reliability of feature rollouts by improving data validation processes. Addressed a specific issue in the OpenAPI specification by explicitly defining feature rollout weights as arrays of numbers, reducing the risk of misconfiguration and potential production issues. Updated the apiFeatureDefinitionValidator to enforce this stricter schema, ensuring that only valid numeric arrays are accepted for feature weights. Utilized TypeScript and YAML to implement these changes, focusing on backend development and schema validation. This targeted fix strengthened the robustness of feature flag configurations and contributed to safer deployment practices within the codebase.