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const Support = (function Support() {
const positionSticky = (function supportPositionSticky() {
let support = false;
const div = document.createElement('div');
('sticky -webkit-sticky -moz-sticky').split(' ').forEach((prop) => {
if (support) return;
div.style.position = prop;
if (div.style.position === prop) {
support = true;
}
});
return support;
}());
return {
positionSticky,
touch: (function checkTouch() {
return !!(('ontouchstart' in window) || (window.DocumentTouch && document instanceof window.DocumentTouch));
}()),
transforms3d: (function checkTransforms3d() {
const div = document.createElement('div').style;
return ('webkitPerspective' in div || 'MozPerspective' in div || 'OPerspective' in div || 'MsPerspective' in div || 'perspective' in div);
}()),
flexbox: (function checkFlexbox() {
const div = document.createElement('div').style;
const styles = ('alignItems webkitAlignItems webkitBoxAlign msFlexAlign mozBoxAlign webkitFlexDirection msFlexDirection mozBoxDirection mozBoxOrient webkitBoxDirection webkitBoxOrient').split(' ');
for (let i = 0; i < styles.length; i += 1) {
if (styles[i] in div) return true;
}
return false;
}()),
observer: (function checkObserver() {
return ('MutationObserver' in window || 'WebkitMutationObserver' in window);
}()),
passiveListener: (function checkPassiveListener() {
let supportsPassive = false;
try {
const opts = Object.defineProperty({}, 'passive', {
// eslint-disable-next-line
get() {
supportsPassive = true;
},
});
window.addEventListener('testPassiveListener', null, opts);
} catch (e) {
// No support
}
return supportsPassive;
}()),
gestures: (function checkGestures() {
return 'ongesturestart' in window;
}()),
};
}());
export default Support;