Why listening cornerstoneimageloadprogress events, the callback function parameters of the event. The detail of the toal and percentComplete for undefined

[zhengdechang1]

Why listening cornerstoneimageloadprogress events, the callback function parameters of the event. The detail of the toal and percentComplete for undefined

my code //cacha image cornerState.leftStack.imageIds.map((imageId, index) => cornerstone.loadAndCacheImage(imageId).then((res) => { // console.log(res, index) }) )

// addEventListener cornerstone.events.addEventListener( 'cornerstoneimageloadprogress', function (event) { const eventData = event.detail console.log(eventData, 'eventData: ') } )

//result