Delete level based on first name

I modified another script into something that works for me, perhaps it will work for you too:

/*
Delete level based on first name
https://community.adobe.com/t5/photoshop/delete-level-based-on-first-name/td-p/12062329
*/

#target photoshop

function main() {
    // Call the function to process layers/layerSets
    processLayersAndSets(app.activeDocument);

    function processLayersAndSets(target) {
        // Loop through all layers
        for (var l = target.artLayers.length - 1; 0 <= l; l--) {
            // Call the removeLayer function
            removeLayer(target.artLayers[l]);
        }
        // Loop through all layer groups/sets
        for (var s = target.layerSets.length - 1; 0 <= s; s--) {
            // Call the removeLayer function
            processLayersAndSets(target.layerSets[s]);
        }
        // Remove non-background layers beginning with the word "test", case insensitive
        function removeLayer(layer) {
            if (!layer.isBackgroundLayer & layer.name.match(/^test\b/i) !== null) layer.remove();
        }
    }
}
app.activeDocument.suspendHistory("Run script", "main()");