Sorry, but this is nearly the exact opposite of the truth. The choice of underlying JS runtime only really affects performance. Bun is specifically designed to

Sorry, but this is nearly the exact opposite of the truth. The choice of underlying JS runtime only really affects performance. Bun is specifically designed to be fully Node-compatible (including the standard library, etc), while Deno is specifically designed to be a break that leaves Node's baggage behind (the current post is one of the pragmatic compromises they've made on that intent, but the intent is still there). Both runtimes add their own stuff on top of the above, but Bun is definitely the most "like Node" in terms of compatibility/familiarity/ease of adoption (and I say this as someone who prefers Deno).