Glossary term
What is TurboFan (TurboFan (V8's optimising compiler))?
TurboFan stands for TurboFan (V8's optimising compiler).
The part of V8 that watches which functions run often and compiles those into optimised machine code.
Learn it properly · JavaScript CoreLesson 13: JS Engine and V8 ArchitectureParser, interpreter (Ignition), compiler (TurboFan), memory heap and garbage collection — what the engine does between your file and the CPU. Watch a function climb V8's tiers and fall back on a deopt, and step through mark-and-sweep.