@mapbox/mapbox-gl-draw/src/lib/to_dense_array.js

A drawing component for Mapbox GL JS

/**
 * Derive a dense array (no `undefined`s) from a single value or array.
 *
 * @param {any} x
 * @return {Array<any>}
 */
function toDenseArray(x) {
  return [].concat(x).filter(y => y !== undefined);
}

export default toDenseArray;