Styled-components version 5.0.0 represents a significant update over the preceding 4.4.1, bringing notable changes for React developers leveraging CSS-in-JS. One key difference lies in its dependencies. V5 relies on @emotion/stylis instead of the previous plain stylis package for CSS parsing, potentially leading to performance improvements and expanded features for advanced CSS styling. This transition aligns styled-components more closely with the broader Emotion ecosystem. Noticeably, version 5 shifts from listing stylis-rule-sheet and several utility libraries as direct dependencies, suggesting internal restructuring or reliance on features within the @emotion packages.
Another potentially impactful change is the altered peer dependency constraints. While both versions require React and React-DOM, v5 specifies a minimum version of 16.8.0 compared to v4's 16.3.0. This indicates that v5 leverages newer React features, such as Hooks and concurrent rendering, potentially requiring developers to upgrade their React version to benefit fully from the update. The slight reduction in unpacked size in v5 might signal code optimizations or removal of deprecated features. The introduction of "funding" information hints at a move towards sustainable open-source development, showcasing the team's commitment to the project's long-term health. If you're considering upgrading, ensure your React version meets the new peer dependency requirements and assess the impact of the @emotion/stylis transition on your existing styles.
The are not vulnerabilities for the version 5.0.0 of the package styled-components