Your system asks for reduced motion, so VFX-JS draws nothing. Demos on this site show plain HTML.

import type { HalftoneInkPalette } from "@vfx-js/effects";

black: HalftoneInk

blue: HalftoneInk

cyan: HalftoneInk

green: HalftoneInk

magenta: HalftoneInk

red: HalftoneInk

yellow: HalftoneInk