@loaders.gl/math/dist/geometry/is-geometry.js

Experimental math classes for loaders.gl

/**
 * Checking if it is geometry
 * @param geometry
 */
export default function isGeometry(geometry) {
    return (geometry &&
        typeof geometry === 'object' &&
        geometry.mode &&
        geometry.attributes &&
        typeof geometry.attributes === 'object');
}