2023-10-24, Version 21.1.0 (Current), @targos

Summary

• Introduces experimental `--detect-module` flag to auto-detect and run ESM syntax in ambiguous .js or extensionless files, with plans to make it default later.
• Adds several minor API enhancements: `flush` option for `fs.appendFile`, `navigator.userAgent` property, ability to pass a stream class to `stream.compose`, and various performance improvements in streams, VM, and file‑system error handl...
• Includes numerous bug fixes, documentation updates, and dependency upgrades (V8, c‑ares, undici, corepack, etc.).