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Extract polyfill loading into single module (#3421)

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Nolan Lawson 2017-05-30 06:11:15 -07:00 • committed by Eugen Rochko
parent 76fa9d2488
commit b42bdd80e8
3 changed files with 44 additions and 39 deletions
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34
app/javascript/packs/application.js
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@ -1,32 +1,6 @@
import main from '../mastodon/main';
import loadPolyfills from '../mastodon/load_polyfills';
const needsBasePolyfills = !(
window.Intl &&
Object.assign &&
Number.isNaN &&
window.Symbol &&
Array.prototype.includes
);
const needsExtraPolyfills = !(
window.IntersectionObserver &&
window.requestIdleCallback
);
// Latest version of Firefox and Safari do not have IntersectionObserver.
// Edge does not have requestIdleCallback.
// This avoids shipping them all the polyfills.
if (needsBasePolyfills) {
Promise.all([
import(/* webpackChunkName: "base_polyfills" */ '../mastodon/base_polyfills'),
import(/* webpackChunkName: "extra_polyfills" */ '../mastodon/extra_polyfills'),
]).then(main).catch(e => {
console.error(e); // eslint-disable-line no-console
});
} else if (needsExtraPolyfills) {
import(/* webpackChunkName: "extra_polyfills" */ '../mastodon/extra_polyfills').then(main).catch(e => {
console.error(e); // eslint-disable-line no-console
});
} else {
main();
}
loadPolyfills().then(main).catch(e => {
console.error(e); // eslint-disable-line no-console
});