import type { DeltaPayload, Symbol, Edge } from './types.js';
/**
 * EncodeDelta serializes a DeltaPayload into GCF delta format.
 */
export declare function encodeDelta(d: DeltaPayload): string;
/**
 * DecodeDelta parses a GCF graph delta wire payload (as produced by encodeDelta)
 * back into a DeltaPayload. Kind abbreviations on removed/added lines are expanded
 * to their full form so the result matches a base snapshot's symbol identities.
 */
export declare function decodeDelta(input: string): DeltaPayload;
/**
 * Apply a delta to a base set of symbols/edges and verify the resulting pack root.
 *
 * Returns the new symbol and edge sets if the computed root matches expectedNewRoot.
 * Throws if the root does not match.
 */
export declare function verifyDelta(baseSymbols: Symbol[], baseEdges: Edge[], removedSymbols: Symbol[], addedSymbols: Symbol[], removedEdges: Edge[], addedEdges: Edge[], expectedNewRoot: string): {
    symbols: Symbol[];
    edges: Edge[];
};
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