javascript 0.3.0

A JavaScript engine implementation in Rust
Documentation 
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var VALUE_GOPD = "VALUE_GOPD";
var VALUE_GET = "VALUE_GET";
var dontEnumSymbol = Symbol("dont_enum_symbol");
var enumerableSymbol = Symbol("enumerable_symbol");
var dontEnumKeys = [dontEnumSymbol, "dontEnumString", "0"];
var enumerableKeys = [enumerableSymbol, "enumerableString", "1"];
var ownKeysResult = [...dontEnumKeys, ...enumerableKeys];
var getOwnKeys = [];
var getKeys = [];
var proxy = new Proxy({}, {
  getOwnPropertyDescriptor: function(_target, key) {
    console.log('trap getOwnPropertyDescriptor called', String(key));
    getOwnKeys.push(key);
    var isEnumerable = enumerableKeys.indexOf(key) !== -1;
    return {value: VALUE_GOPD, writable: false, enumerable: isEnumerable, configurable: true};
  },
  get: function(_target, key) {
    console.log('trap get called', String(key));
    getKeys.push(key);
    return VALUE_GET;
  },
  ownKeys: function() {
    console.log('trap ownKeys called');
    return ownKeysResult;
  },
});
var {...rest} = proxy;
console.log('getOwnKeys', getOwnKeys);
console.log('getKeys', getKeys);
console.log('rest', Object.keys(rest));
console.log('rest-enumSymbol', rest[enumerableSymbol]);