File size: 3,125 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 |
export function linkGc() {
// TODO-APP: Remove this logic when Float has GC built-in in development.
if (process.env.NODE_ENV !== 'production') {
const callback = (mutationList: MutationRecord[]) => {
for (const mutation of mutationList) {
if (mutation.type === 'childList') {
for (const node of mutation.addedNodes) {
if (
'tagName' in node &&
(node as HTMLLinkElement).tagName === 'LINK'
) {
const link = node as HTMLLinkElement
if (link.dataset.precedence?.startsWith('next')) {
const href = link.getAttribute('href')
if (href) {
const [resource, version] = href.split('?v=', 2)
if (version) {
const currentOrigin = window.location.origin
const allLinks = [
...document.querySelectorAll(
'link[href^="' + resource + '"]'
),
// It's possible that the resource is a full URL or only pathname,
// so we need to remove the alternative href as well.
...document.querySelectorAll(
'link[href^="' +
(resource.startsWith(currentOrigin)
? resource.slice(currentOrigin.length)
: currentOrigin + resource) +
'"]'
),
] as HTMLLinkElement[]
for (const otherLink of allLinks) {
if (otherLink.dataset.precedence?.startsWith('next')) {
const otherHref = otherLink.getAttribute('href')
if (otherHref) {
const [, otherVersion] = otherHref.split('?v=', 2)
if (!otherVersion || +otherVersion < +version) {
// Delay the removal of the stylesheet to avoid FOUC
// caused by `@font-face` rules, as they seem to be
// a couple of ticks delayed between the old and new
// styles being swapped even if the font is cached.
setTimeout(() => {
otherLink.remove()
}, 5)
const preloadLink = document.querySelector(
`link[rel="preload"][as="style"][href="${otherHref}"]`
)
if (preloadLink) {
preloadLink.remove()
}
}
}
}
}
}
}
}
}
}
}
}
}
// Create an observer instance linked to the callback function
const observer = new MutationObserver(callback)
observer.observe(document.head, {
childList: true,
})
}
}
|