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YuruToot/app/javascript/mastodon/is_mobile.ts

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import { supportsPassiveEvents } from 'detect-passive-events';
import { forceSingleColumn, hasMultiColumnPath } from './initial_state';
const LAYOUT_BREAKPOINT = 630;
export const isMobile = (width: number) => width <= LAYOUT_BREAKPOINT;
export const transientSingleColumn = !forceSingleColumn && !hasMultiColumnPath;
export type LayoutType = 'mobile' | 'single-column' | 'multi-column';
export const layoutFromWindow = (): LayoutType => {
if (isMobile(window.innerWidth)) {
return 'mobile';
} else if (!forceSingleColumn && !transientSingleColumn) {
return 'multi-column';
} else {
return 'single-column';
}
};
const listenerOptions = supportsPassiveEvents ? { passive: true } : false;
let userTouching = false;
const touchListener = () => {
userTouching = true;
window.removeEventListener('touchstart', touchListener);
};
window.addEventListener('touchstart', touchListener, listenerOptions);
export const isUserTouching = () => userTouching;