Node.isEqualNode()

[jujurocket]

Is your feature request related to a problem? Please describe.
I wanted to compare two happy-dom nodes in my tests, however the library does not implement the standard
Node.isEqualNode browser method.

Instead I noticed there is a static function (nodeEquals) that implements this functionality in NodeUtility.

The issue is I did not realise this functionality was available in the library until I dug through the source
code, and I had to do this import in order to use it:

import NodeUtility from "happy-dom/lib/nodes/node/NodeUtility"

Describe the solution you'd like
I was wondering if there was some design choice behind this that I haven't considered, or whether it
would be possible to add the method to the INode type, the same way it works in browsers?

Additional context
I am actually using happy-dom to test a web framework I am developing, and it involves comparing
generated HTML trees, hence the above.

The official implementation makes this tricky sometimes because of whitespace between nodes. I have
actually implemented a wrapper function around nodeEquals which first strips the two node trees of
any text nodes only containing whitespace. This makes comparison between two node trees more
meaningful in a test environment for generated HTML.

I'm not sure if the above function would have any use in NodeUtilities as well?

---

Happy to put in a pull request if any of the above seems desirable.

[gangsthub]

The method in the Node interface according to spec is isEqualNode:

• https://dom.spec.whatwg.org/#ref-for-dom-node-isequalnode

There's also isSameNode. nodeEquals does not exist in the spec, at least at the moment. 🤔

[capricorn86]

Thanks for your contribution @gangsthub! 🙂

Your fix has been released.

You can read more about the release here:
https://github.com/capricorn86/happy-dom/releases/tag/v8.2.0