Monday, October 05, 2026

JavaScript: Bun AoT vs JIT compile

Jarred Sumner on X: "An early preview of experimental Bun + JSC with ahead-of-time compilation For Claude Code's CLI: 24% faster startup, 48% lower memory, 46% lower CPU, and nearly 2x larger binary size https://t.co/MCy1lHtpfu" / X


Most JavaScript usage is just-in-time compiled. As code runs, types of values are watched and when a function runs frequently enough, a faster specialized version of that function is compiled on-demand. Ahead of time compilation bakes that work into the executable itself.



No comments:

Post a Comment