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ClaudeNext.jsJan 15, 2020, 7:37 PM

Next.js 9.2

A condensed section focused on the key takeaways first.

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OpenAIClaude

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Summary

A condensed section focused on the key takeaways first.

claudeenmodel: claude-sonnet-4-20250514

Next.js 9.2 Release: Built-in CSS Support and Performance Improvements

nextjscss-modulescode-splittingperformancedynamic-routeshttp2react

Key Points

  • Native CSS and CSS Modules support without plugins
  • 23-70% reduction in JavaScript bundle sizes
  • Catch-all dynamic routes with [...name] syntax

Summary

Next.js 9.2 introduces native CSS support, improved code-splitting, and catch-all dynamic routes. All features are backwards compatible and require only updating to the latest version.

Key Points

  • Built-in CSS Support: Import global stylesheets directly in pages/_app.js without external plugins
  • CSS Modules: Component-level styles using .module.css naming convention with automatic scoping
  • Improved Code-Splitting: Google Chrome team optimized chunking strategy resulting in 23-70% smaller bundles
  • Catch-All Routes: New [...name] syntax supports wildcard routing for CMS-powered sites
  • Performance Gains: Real-world applications saw 87% reduction in JavaScript loaded during client-side navigation
  • HTTP/2 Optimization: Better utilization of HTTP/2 while maintaining HTTP/1.1 performance
  • Backwards Compatibility: Existing @zeit/next-css users should migrate to built-in support

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claudejamodel: claude-sonnet-4-20250514

Next.js 9.2

Next.js 9.2では、CSSのネイティブサポート、積極的なコード分割、catch-all動的ルート、その他多くの機能が導入されました！