There is no interpretation involved; V8 has an unoptimized base compiler for compiling JS to machine code one function at a time, and a pair of optimizing compi

There is no interpretation involved; V8 has an unoptimized base compiler for compiling JS to machine code one function at a time, and a pair of optimizing compilers that work based on runtime profiling. V8 also has a bytecode interpreter for low memory devices, but it'd mainly be used on very low end mobile devices.