Javascript: Convert String To Object Value Without `eval`

This is how to convert "foo.bar.fuz.baz" to the actual value of foo.bar.fuz.baz . If the value is not available, it returns undefined

function str2Val(str, scope=window) {
  const keys = str.split(/[\.\[\]'"]/).filter(e => e);
  let ret = scope;
  
  try {
    keys.forEach(key => {
      ret = ret[key];
    });
    return ret;
  } catch(e) {
    return undefined;
  }
}
// The following is for test
window.foo = {
  bar: {
    a: {
      b: {
        'c-end': 'hello'
      }
    }
  }
}