how come I can't use 100.dp.toPx()? I'm following this swipeable to AnchoredDraggable migration guide where they have.

enum class DragValue { Start, Center, End }

@Composable
fun AnchoredDraggableBox() {
    val anchors = DraggableAnchors {
        Start at -100.dp.toPx()
        Center at 0f
        End at 100.dp.toPx()
    }
    val state = remember {
        AnchoredDraggableState(anchors = anchors)
    }
    Box(
        Modifier.offset { IntOffset(x = state.requireOffset(), y = 0) }
    )
}

but toPx() isn't an extension function for me.

Maybe DraggableAnchor dont give you composable scope

Do something like

LocalDensity.current.run { 100.dp.toPx() }

it is clearer to

with(LocalDensity.current) { 100.dp.toPx() }

than

.run {}

IMO