Function _populateIdMapWithTree

src/core/runtime/morph.js:242–254

(idMap, persistentIds, root, elements)

}

function _populateIdMapWithTree(idMap, persistentIds, root, elements) {
    for (var elt of elements) {
        if (persistentIds.has(elt.id)) {
            var current = elt;
            while (current && current !== root) {
                var idSet = idMap.get(current);
                if (idSet == null) { idSet = new Set(); idMap.set(current, idSet); }
                idSet.add(elt.id);
                current = current.parentElement;
            }
        }
    }
}

function _queryEltAndDescendants(elt, selector) {
    var results = [...(elt.querySelectorAll?.(selector) ?? [])];