The V8 engine speeds up JavaScript by dynamically compiling frequently run bytecode into optimized native machine code. However, if you pass inconsistent argument types to these optimized functions, V8 panics and deoptimizes back to bytecode. Keeping your functions monomorphic (single-typed) pr...
Source: [Dev.to](https://dev.to/doogal/how-the-v8-engine-optimizes-javascript-at-runtime-4kf1)