jsdom 5.5.0

on Node.js NPM

• Added postMessage support, for communicating between parent windows, iframes, and combinations thereof. It's missing a few semantics, especially around origins, as well as MessageEvent source. Objects are not yet structured cloned, but instead passed by reference. But it's working, and awesome! (@jeffcarp)
• Rewrote cloning code (underlying cloneNode and importNode), fixing a number of issues:
  • Elements with weird tag names, of the type that only the parser can normally create, can now be cloned (#1142)
  • Doctypes can now be cloned, per the latest spec.
  • Attrs cannot be cloned, per the latest spec (although they still have a cloneNode method for now due to legacy).
  • Document clones now correctly copy over the URL and content-type.
• Fixed any virtual console output from iframes to be proxied to the parent window's virtual console. (@jeffcarp)
• Fixed the type property of <button> elements to correctly default to submit, and to stay within the allowed range.
• Fixed clicking on submit <button>s to submit their containing form; previously only <input type="submit"> worked. (@rxgx)
• Fixed document.open() to return this, per spec. (@ryanseddon)

Additionally, Joris-van-der-Wel added a benchmarking framework, and a number of benchmarks, which should help us avoid performance regressions going forward, and also make targeted performance fixes. We're already investigating some real-world issues using this framework. Very exciting!