import "allocator/arena"; assert(Date.UTC(1970, 0, 1) == 0); assert(Date.UTC(1970, 0, 1, 0, 0, 0, 0) == 0); var creationTime = Date.UTC(2018, 10, 10, 11, 0, 0, 1); assert(creationTime == 1541847600001); assert(Date.now() > creationTime); var date = new Date(creationTime); assert(date.getTime() == creationTime); date.setTime(creationTime + 1); assert(date.getTime() == creationTime + 1);