helpers parseFromString.ts

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  export default function parseFromString(markup: string, type: 'html' | 'xml' = 'xml') : NodeListOf<ChildNode> {
 
    const mime = type === 'html' ? 'text/html' : 'application/xml';
 
    const wrappedMarkup = type === 'html' ?
        `<!DOCTYPE html>\n<html><body>${markup}</body></html>` :
        `<?xml version="1.0" encoding="UTF-8"?>\n<xml>${markup}</xml>`;
 
    const doc = new DOMParser().parseFromString(wrappedMarkup, mime);
 
    const tag = type === 'html' ? 'body' : 'xml';
 
    // Extract the inner node
    return doc.getElementsByTagName(tag)[0].childNodes;
}