bc518174
 王天杨
提交两个项目文件
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var passiveSupported = false;
if (typeof window !== 'undefined') {
try {
var options = Object.defineProperty({}, 'passive', {
get: function () {
passiveSupported = true;
return true;
},
});
// @ts-ignore
window.addEventListener('test', options, options);
// @ts-ignore
window.removeEventListener('test', options, options);
}
catch (err) {
passiveSupported = false;
}
}
export var nonPassive = passiveSupported ? { passive: false } : false;
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