It isn't, v8 will have anywhere between 2-1000x performance depending on the exact code it's jitting. Boa absolutely destroys v8 here though: use boa_engin

It isn't, v8 will have anywhere between 2-1000x performance depending on the exact code it's jitting. Boa absolutely destroys v8 here though: use boa_engine::{Context, Source, JsResult}; fn main() -> JsResult<()> { let js_code = r#" let two = 1 + 1; let definitely_not_four = two + "2"; definitely_not_four "#; // Instantiate the execution context let mut context = Context::default(); // Parse the source code let result = context.eval(Source::from_bytes(js_code))?; println!("{}", result.display()); Ok(()) }