export declare function executeCommand(command: string, timeout?: number): Promise<{
    stdout: string;
    stderr: string;
}>;
export declare function truncateString(str: string, maxLength: number): string;
export declare function formatFileSize(bytes: number): string;
export declare function formatDuration(ms: number): string;
export declare function pluralize(count: number, singular: string, plural?: string): string;
export declare function groupBy<T>(array: T[], keyFn: (item: T) => string): Record<string, T[]>;
export declare function sleep(ms: number): Promise<void>;
export declare function debounce<T extends (...args: unknown[]) => unknown>(fn: T, delay: number): (...args: Parameters<T>) => void;
export declare function getRelativePath(absolutePath: string, basePath: string): string;
export declare function isWindows(): boolean;
export declare function normalizeLineEndings(text: string): string;
export declare function extractFirstLine(text: string): string;
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