mastodon/app/javascript/flavours/glitch/load_polyfills.js
Nick Schonning 5b88b7e81a [Glitch] Remove Array.prototype.includes polyfill
Port c0886dee14 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>
2023-04-09 12:03:11 +02:00

41 lines
1.2 KiB
JavaScript

// Convenience function to load polyfills and return a promise when it's done.
// If there are no polyfills, then this is just Promise.resolve() which means
// it will execute in the same tick of the event loop (i.e. near-instant).
function importBasePolyfills() {
return import(/* webpackChunkName: "base_polyfills" */ './base_polyfills');
}
function importExtraPolyfills() {
return import(/* webpackChunkName: "extra_polyfills" */ './extra_polyfills');
}
function loadPolyfills() {
const needsBasePolyfills = !(
HTMLCanvasElement.prototype.toBlob &&
window.Intl &&
Object.assign &&
Object.values &&
window.Symbol &&
Promise.prototype.finally
);
// Latest version of Firefox and Safari do not have IntersectionObserver.
// Edge does not have requestIdleCallback.
// This avoids shipping them all the polyfills.
const needsExtraPolyfills = !(
window.AbortController &&
window.IntersectionObserver &&
window.IntersectionObserverEntry &&
'isIntersecting' in IntersectionObserverEntry.prototype &&
window.requestIdleCallback
);
return Promise.all([
needsBasePolyfills && importBasePolyfills(),
needsExtraPolyfills && importExtraPolyfills(),
]);
}
export default loadPolyfills;