/**
 * Remove parts of the mesh that are not connected to any of the faces.
 * This is typically used after filtering or reduction operation to get rid of dangling references.
 * @param {TopoMesh} mesh
 * @return {number} number of structures removed (vertices + edges), if this is 0 - no changes were done
 */
export function tm_mesh_cleanup(mesh: TopoMesh): number;
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