function defineProperty(object, property, attr) { return Object.defineProperty(object, property, attr); } // Passive options // Inspired by https://github.com/Modernizr/Modernizr/blob/master/feature-detects/dom/passiveeventlisteners.js export const passiveOption = (() => { let cache = null; return (() => { if (cache !== null) { return cache; } let supportsPassiveOption = false; try { window.addEventListener( 'test', null, defineProperty({}, 'passive', { get() { supportsPassiveOption = true; }, }), ); } catch (err) { // } cache = supportsPassiveOption; return supportsPassiveOption; })(); })(); export default {};