/**
 * CLI Input Validation Utilities
 *
 * Provides unified validation for all CLI commands.
 * Complements PathValidator with option-level validation.
 */
/**
 * Validation result structure
 */
export interface ValidationResult<T = string> {
    /** Whether validation passed */
    valid: boolean;
    /** Error message if validation failed */
    error?: string;
    /** Sanitized/normalized value */
    value?: T;
}
/**
 * Validate and sanitize input file path
 *
 * @param path - User-provided file path
 * @param required - Whether the path is required
 * @returns Validation result with sanitized path
 */
export declare function validateInputPath(path: string | undefined, required?: boolean): ValidationResult;
/**
 * Validate output file path
 *
 * @param path - User-provided output path
 * @param required - Whether the path is required
 * @returns Validation result with sanitized path
 */
export declare function validateOutputPath(path: string | undefined, required?: boolean): ValidationResult;
/**
 * Validate delimiter option
 *
 * @param delimiter - User-provided delimiter
 * @returns Validation result with normalized delimiter
 */
export declare function validateDelimiter(delimiter: string | undefined): ValidationResult;
/**
 * Validate tokenizer option
 *
 * @param tokenizer - User-provided tokenizer name
 * @returns Validation result with validated tokenizer
 */
export declare function validateTokenizer(tokenizer: string | undefined): ValidationResult;
/**
 * Validate numeric option
 *
 * @param value - User-provided value
 * @param options - Validation options
 * @returns Validation result with validated number
 */
export declare function validateNumber(value: string | number | undefined, options: {
    name: string;
    min?: number;
    max?: number;
    default?: number;
    integer?: boolean;
}): ValidationResult<number>;
/**
 * Validate indent option
 *
 * @param indent - User-provided indent value
 * @returns Validation result with validated indent
 */
export declare function validateIndent(indent: string | number | undefined): ValidationResult<number>;
/**
 * Validate version string
 *
 * @param version - User-provided version
 * @returns Validation result
 */
export declare function validateVersion(version: string | undefined): ValidationResult;
/**
 * Collected validation errors
 */
export interface ValidationErrors {
    valid: boolean;
    errors: string[];
}
/**
 * Run all validations and collect errors
 *
 * @param validations - Array of validation results
 * @returns Combined result with all errors
 */
export declare function validateAll(validations: ValidationResult<unknown>[]): ValidationErrors;
/**
 * Display validation errors to console
 *
 * @param errors - Array of error messages
 * @param exitCode - Process exit code (default: 1)
 */
export declare function displayValidationErrors(errors: string[], exitCode?: number): never;
/**
 * Validate query expression
 *
 * @param expression - Query expression string
 * @returns Validation result
 */
export declare function validateQueryExpression(expression: string | undefined): ValidationResult;
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