Node.nodeValue should be var

[ochrons]

Currently nodeValue is a def but it should be var to allow setting a new nodeValue.

From https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeValue

The Node.nodeValue property returns or sets the value of the current node.

For Text node a work-around is to use the data property.

[exoego]

It seems that nodeValue supposed to raise Exception on setting in DOM Level 2.
In DOM Level 4, it won't.