Have you ever wondered what actually happens when you run a JavaScript program? You write: function add ( a , b ) { return a + b ; } add ( 10 , 20 ); And somehow, within milliseconds, your JavaScript is executing as highly optimized machine code. But what happens between the source code you write and the instructions your CPU executes? The answer lies inside V8 , Google's high-performance JavaScript and WebAssembly engine. V8 power...