Version Details and Security Vulnerabilities

@storybook/addons version 5.3.21 introduces incremental updates to the Storybook addon ecosystem, building upon the foundation laid by version 5.3.20. Both versions serve as the central hub for managing and extending Storybook's functionality through addons. Key dependencies like global, core-js, util-deprecate, @storybook/api, @storybook/channels, @storybook/core-events, and @storybook/client-logger remain consistent, highlighting the stability of the core architecture. While the dependency versions appear synchronized between the two releases, developers should note that the internal logic and bug fixes within those dependencies may have been updated.

The most significant difference lies the release date and potentially, the subtle bug fixes and performance enhancements integrated within the core dependencies. Version 5.3.21 was released on August 28, 2020, a couple of days after version 5.3.20 which was released on August 26, 2020, suggesting a rapid response to address any discovered issues or incorporate minor improvements reported by the community. For developers using Storybook, upgrading to version 5.3.21 is recommended to benefit from those refinements and ensure compatibility across their Storybook environment. While the file count and unpacked size remain identical, developers should always consult the official Storybook changelog for a comprehensive list of changes. Each version licensed under MIT, contains the same development dependencies @types/util-deprecate.