import { BackBoneSequenceNode } from '../../../domain/entities/BackBoneSequenceNode';
import { EmptySequenceNode } from '../../../domain/entities/EmptySequenceNode';
import { LinkerSequenceNode } from '../../../domain/entities/LinkerSequenceNode';
import type { ITwoStrandedChainItem } from '../../../domain/entities/monomer-chains/ChainsCollection';
import type { SequenceNode } from '../../../domain/entities/monomer-chains/types';
export declare function isNodeRestrictedForHydrogenBondCreation(node: SequenceNode | undefined): node is EmptySequenceNode | LinkerSequenceNode | BackBoneSequenceNode | undefined;
export declare function isTwoStrandedNodeRestrictedForHydrogenBondCreation(twoStrandedNode?: ITwoStrandedChainItem): boolean;