Summary & Key Takeaways ​

• Bun v1.3.13 fixes 82 issues, incorporating 381 community upvotes.
• New bun test flags include --parallel, --isolate, --shard, and --changed for more flexible testing.
• Memory usage for bun install tarball streaming is reduced by 17x, and source maps use 8x less memory.
• Gzip compression is 5.5x faster thanks to zlib-ng integration.
• Bun.serve() now supports Range requests, and node:crypto and WebCrypto include SHA3.
• A ws+unix:// WebSocket client has been added, alongside numerous bugfixes and Node.js compatibility improvements.

Our Commentary ​

Bun continues its relentless pace of development. This 1.3.13 release, while a minor version bump, is packed with substantial improvements. The memory optimizations for bun install and source maps are huge for DX, and the bun test enhancements show a commitment to a robust testing story. It's impressive how quickly Bun is closing the feature and compatibility gap with Node.js, while often outperforming it.