vt-social/app/javascript/mastodon/is_mobile.js

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import detectPassiveEvents from 'detect-passive-events';
const LAYOUT_BREAKPOINT = 630;
export function isMobile(width) {
return width <= LAYOUT_BREAKPOINT;
};
const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
let userTouching = false;
let listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false;
function touchListener() {
userTouching = true;
window.removeEventListener('touchstart', touchListener, listenerOptions);
}
window.addEventListener('touchstart', touchListener, listenerOptions);
export function isUserTouching() {
return userTouching;
}
export function isIOS() {
return iOS;
};