export declare function buildRegex(entry: string): RegExp | null;
export declare function isCommandBlocked(command: string, mode: 'blacklist' | 'whitelist', list: string[]): boolean;
export declare function stripQuotes(text: string): string;
export declare function tokenizeCommand(command: string): string[];
export declare function isPathLike(token: string): boolean;
export declare function resolveCandidatePath(candidate: string, currentDir: string): string;
export declare function extractPathCandidates(command: string): string[];
export declare function isWithinRoot(rootDir: string, targetPath: string): boolean;
export declare function validatePathAccess(command: string, currentDir: string, rootDir: string, restrictDirectory: boolean): {
    valid: boolean;
    error?: string;
};
export declare function validateCdCommand(command: string, currentDir: string, rootDir: string, restrictDirectory: boolean): {
    valid: boolean;
    newDir?: string;
    error?: string;
};
export declare function maskCurlOutput(command: string, output: string): string;
export declare function isPrivateIpv4(ip: string): boolean;
export declare function escapeHtml(text: string): string;