Property 'Device' does not exist on type 'typeof jsb'.

Creator 2.x
#1

我想让屏幕不熄屏。搜了下论坛说可以用 jsb.Device.setKeepScreenOn(true)
但是 TS提示：Property ‘Device’ does not exist on type ‘typeof jsb’. 请问有大神知道咋回事不？