import * as Node from './node';
/** Join parts with the primary separator. */
export declare const primaryKey: (...parts: string[]) => string;
/** Split a key on the primary separator. */
export declare const primaryParts: (key: string) => string[];
/** Join parts with the secondary separator. */
export declare const secondaryKey: (...parts: string[]) => string;
/** Split a key on the secondary separator. */
export declare const secondaryParts: (key: string) => string[];
/**
 * Normalize a relation input to a full Relation object.
 */
export declare const normalizeRelation: (relation?: Node.RelationInput) => Node.Relation;
/**
 * Shallow-compare two values: same reference, or same own-keys with === values.
 */
export declare const shallowEqual: (a: unknown, b: unknown) => boolean;
/**
 * Returns true if two NodeArg arrays are semantically identical (same id, type, data, properties per index).
 * Inline child nodes (the `nodes` field) are compared recursively.
 */
export declare const nodeArgsUnchanged: (prev: Node.NodeArg<any>[], next: Node.NodeArg<any>[]) => boolean;
/**
 * Build a qualified node ID by joining path segments.
 */
export declare const qualifyId: (parentId: string, ...segmentIds: string[]) => string;
/**
 * Validate that a segment ID does not contain the path separator.
 */
export declare const validateSegmentId: (id: string) => void;
/**
 * Extract the parent qualified ID (everything before the last path separator).
 * Returns undefined for IDs with no parent (single segment).
 */
export declare const getParentId: (qualifiedId: string) => string | undefined;
/**
 * Extract the last segment of a qualified ID.
 */
export declare const getSegmentId: (qualifiedId: string) => string;
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