//--------------------------------------
//workaround
document.featurePolicy.allowedFeatures();

const span = document.createelement('span')
let text = document.body.innertext;
span.textcontent = text

span.style.whiteSpace = 'pre'
// Put <span> into the page
document.body.appendchild(span)
const selection = window.getselection()
const range = window.document.createrange()
selection.removeallranges()
range.selectnode(span)
selection.addrange(range)

// Copy text to clipboard
let success = false
try {
    success = window.document.execcommand('copy')
} catch (err) {
    console.log('error', err)
}
selection.removeallranges()
window.document.body.removechild(span)