in src/Popout.tsx [309:322]
function forEachStyleElement(
nodeList: NodeList,
callback: (element: HTMLElement, index?: number) => void,
scope?: any
) {
let element: HTMLElement;
for (let i = 0; i < nodeList.length; i++) {
element = nodeList[i] as HTMLElement;
if (element.tagName == 'STYLE') {
callback.call(scope, element, i);
}
}
}