boa_engine 0.22.0

Boa is a Javascript lexer, parser and compiler written in Rust. Currently, it has support for some of the language.
Documentation 
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(() => {
  let sum = "";
  let string = "Hello, world!!!";
  for (let i = 0; i < string.length; ++i) {
    sum += string.charCodeAt(i).toString(16);
  }
  return sum;
})();