mastodon/app/javascript/flavours/glitch/util/dom_helpers.js

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// Package imports.
import detectPassiveEvents from 'detect-passive-events';
// This will either be a passive lister options object (if passive
// events are supported), or `false`.
export const withPassive = detectPassiveEvents.hasSupport ? { passive: true } : false;
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// Focuses the root element.
export function focusRoot () {
let e;
if (document && (e = document.querySelector('.ui')) && (e = e.parentElement)) {
e.focus();
}
}