import { SplatLoader, PLYLoader } from 't3d-gaussian-splatting';

// ...

// load splat file and add to scene
const splatLoader = new SplatLoader(); // ro new PlyLoader();
splatLoader.loadAsync('./path/to/xx.splat').then(({ buffer, node }) => {
    scene.add(node);
});

function loop() {
    // ...

    // call node.update in loop function
    node.update(camera, renderTargetWidth, renderTargetHeight);

    // ...
}