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index.js
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index.js
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/*! clipboard-copy. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
/* global DOMException */
module.exports = clipboardCopy
function makeError () {
return new DOMException('The request is not allowed', 'NotAllowedError')
}
async function copyClipboardApi (text) {
// Use the Async Clipboard API when available. Requires a secure browsing
// context (i.e. HTTPS)
if (!navigator.clipboard) {
throw makeError()
}
return navigator.clipboard.writeText(text)
}
async function copyExecCommand (text) {
// Put the text to copy into a <span>
const span = document.createElement('span')
span.textContent = text
// Preserve consecutive spaces and newlines
span.style.whiteSpace = 'pre'
span.style.webkitUserSelect = 'auto'
span.style.userSelect = 'all'
// Add the <span> to the page
document.body.appendChild(span)
// Make a selection object representing the range of text selected by the user
const selection = window.getSelection()
const range = window.document.createRange()
selection.removeAllRanges()
range.selectNode(span)
selection.addRange(range)
// Copy text to the clipboard
let success = false
try {
success = window.document.execCommand('copy')
} finally {
// Cleanup
selection.removeAllRanges()
window.document.body.removeChild(span)
}
if (!success) throw makeError()
}
async function clipboardCopy (text) {
try {
await copyClipboardApi(text)
} catch (err) {
// ...Otherwise, use document.execCommand() fallback
try {
await copyExecCommand(text)
} catch (err2) {
throw (err2 || err || makeError())
}
}
}