How to use the can-dom-mutate.onNodeRemoval function in can-dom-mutate
To help you get started, we’ve selected a few can-dom-mutate examples, based on popular ways it is used in public projects.
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canjs / can-connect / can / tag / tag.js View on Github 
el[canSymbol.for('can.viewModel')] = request;
var nodeList = nodeLists.register([], undefined, tagData.parentNodeList || true);
var frag = tagData.subtemplate ?
tagData.subtemplate( tagData.scope.add(request), tagData.options, nodeList ) :
document.createDocumentFragment();
// Append the resulting document fragment to the element
domMutateNode.appendChild.call(el, frag);
// update the nodeList with the new children so the mapping gets applied
nodeLists.update(nodeList, el.childNodes);
var removalDisposal = domMutate.onNodeRemoval(el, function () {
if (!el.ownerDocument.contains(el)) {
removalDisposal();
nodeLists.unregister(nodeList);
}
});
});
};can-dom-mutate
Dispatch and listen for DOM mutations
