/**
 * Fallback Utilities
 * Provides graceful degradation when external binaries are unavailable
 */
/**
 * Check if a binary is available
 * @param binary - The binary name to check.
 * @returns True if the binary is available in PATH.
 */
export declare function isBinaryAvailable(binary: string): boolean;
/**
 * Native file listing fallback when fd is unavailable
 * @param dir - The directory to list files from.
 * @param options - Options for filtering.
 * @param options.glob - Glob pattern to match files.
 * @param options.depth - Maximum directory depth to traverse.
 * @param options.type - File type filter: 'file', 'directory', or 'any'.
 * @returns An array of relative file paths.
 */
export declare function listFilesNative(dir: string, options?: {
    glob?: string;
    depth?: number;
    type?: 'file' | 'directory' | 'any';
}): Promise<string[]>;
/**
 * Native grep fallback when ripgrep is unavailable
 * @param dir - The directory to search in.
 * @param pattern - The search pattern.
 * @param options - Search options.
 * @param options.isRegex - Whether the pattern is a regex.
 * @param options.caseSensitive - Whether the search is case-sensitive.
 * @returns An array of matching results with file, line number, and text.
 */
export declare function grepNative(dir: string, pattern: string, options?: {
    isRegex?: boolean;
    caseSensitive?: boolean;
}): Promise<{
    file: string;
    line: number;
    text: string;
}[]>;
/**
 * Get appropriate search function based on binary availability
 * @returns The search strategy to use.
 */
export declare function getSearchStrategy(): 'ripgrep' | 'native';
/**
 * Get appropriate file listing strategy
 * @returns The file listing strategy to use.
 */
export declare function getListStrategy(): 'fd' | 'native';
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