npm i pixi.js
npm i @pixi/filter-displacement
npm i @pixi/filter-rgb-split

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/pixi.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/pixi-filters.js"></script>
<script src="<PATH_TO_FILE>/LiquidEffect.js"></script>

<script>
    new LiquidEffect({
        appendTo: "#main",
        image: './assets/images/image.jpg',
        displacementImage: "./assets/images/displacement_map.jpg",
        displacementScale: 1,
        speed: 1,
        intensityX: 1.5,
        intensityY: 1.5,
    });
</script>

npm i liquideffect

import LiquidEffect from 'liquideffect'

LiquidEffect({
    appendTo: "#main",
    image: './assets/images/image.jpg',
    displacementImage: "./assets/images/displacement_map.jpg",
    displacementScale: 1,
    speed: 1,
    intensityX: 1.5,
    intensityY: 1.5,
});