Back when Bun was announced I was so excited for it. I was onboarding on a large node TypeScript project at the time and the build time and resource usage were killing me. Deno’s compatibility hacks and rough edges with node made it a non-starter.

I thought Bun’s promise of full node compatibility with better devex was a dream come true. Then “1.0” was announced and the first simple script I tried segfaulted Bun. The second threw a random error because the http server didn’t implement some stream api. I knew then that Bun was in the league of Vlang. Over promise and under delivery. Just ship “1.0” anyway for marketing and VC reasons. I haven’t touched it since. 2 people I trust that spent time looking at its code and both said to stay away.

Deno had the quality, but missed on the compat because (initially at least) it had an original and more ambitious vision. At least I’d give them that. Bun promised compat in exchange of any ambitious vision but it offers nothing. It runs on hype and hyperbole.