智能照明系统APP-本地串口
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LightingSystemApp-serial/.svn/pristine/38/382bce22fa2f5b636b987b4730c...

11 lines
306 B

export let supportsPassive = false
try {
const opts = {}
Object.defineProperty(opts, 'passive', ({
get () {
/* istanbul ignore next */
supportsPassive = true
}
})) // https://github.com/facebook/flow/issues/285
window.addEventListener('test-passive', null, opts)
} catch (e) {}