New
5.0.0
Express v5.0.0
🎉 Express v5 is finally here! 🎉
After years of development, the long-awaited Express v5 has been officially released. This version focuses on simplifying the codebase, improving security, and dropping support for older Node.js versions to enable better performance and maintainability.
For detailed information, please check out the official Express v5 release blog post.
Most relevant details
Major Changes in v5
- Node.js version support: Dropped support for Node.js versions before v18.
- Routing changes: Updated to
path-to-regexp@8.x, removing sub-expression regex patterns for security reasons (ReDoS mitigation). - Promise support: Middleware can now return rejected promises, caught by the router as errors.
- changes: Several improvements including the ability to customize body depth and defaulting to .