title: Error: Can't access lexical declaration
body: <pre><code>let textBytes = ctypes.uint8_t("hello"); 
  let a = new SECItem;
  a.type = siBuffer;
  a.data = textBytes.address();
  a.len = textBytes.length;
  </code></pre>
  
  <p>I got ReferenceError: can't access lexical declaration textBytes before initialization.</p>