import { CompileResult } from '../types.js';
export interface FileChanges {
    changedFiles: Set<string>;
    changedLines: Map<string, number[]>;
}
/**
 * Tracks which output files have changed between compilations.
 * Returns the set of changed file paths and a map of changed line numbers per file.
 */
export declare function useFileChanges(program: CompileResult["program"], outputFiles: string[]): FileChanges;
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