pinafore/routes/_utils/setFavicon.js

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// borrowed from https://github.com/HenrikJoreteg/favicon-setter
export function setFavicon (href) {
let faviconId = 'theFavicon'
let oldLink = document.getElementById(faviconId)
if (oldLink.getAttribute('href') === href) {
return
}
let link = document.createElement('link')
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link.id = faviconId
link.rel = 'shortcut icon'
link.type = 'image/png'
link.href = href
document.head.removeChild(oldLink)
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document.head.appendChild(link)
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}