/**
 * Core differ functionality - main entry points.
 */
import type { ModuleAnalysisWithTypes, ApiChange, DiffOptions } from '../types';
/**
 * Compares two module analyses and produces API changes.
 *
 * Requires TypeChecker for accurate semantic analysis. Use `parseModuleWithTypes()`
 * to create the input analyses.
 *
 * @param oldAnalysis - The old (baseline) module analysis with TypeChecker
 * @param newAnalysis - The new module analysis with TypeChecker
 * @param options - Comparison options
 * @returns Array of API changes with multi-dimensional descriptors
 *
 * @alpha
 */
export declare function diffModules(oldAnalysis: ModuleAnalysisWithTypes, newAnalysis: ModuleAnalysisWithTypes, options?: DiffOptions): ApiChange[];
/**
 * Flattens nested changes into a single array.
 * Useful for reporting or counting total changes.
 * Adds 'is-nested-change' tag to nested changes.
 *
 * Note: This function does NOT mutate the input changes.
 * Each nested change gets a new descriptor with the tag added.
 *
 * @alpha
 */
export declare function flattenChanges(changes: ApiChange[]): ApiChange[];
/**
 * Groups changes by their descriptor key.
 *
 * @alpha
 */
export declare function groupChangesByDescriptor(changes: ApiChange[]): Map<string, ApiChange[]>;
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