Comment by baq

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(())
    }