/**
 * Helper Functions for the CLI
 *
 * Validation helpers for the `--harnesses` option.
 */
import { Harness } from './types';
/**
 * Parse comma-separated harness values into an array
 * @param value - Comma-separated string of harness names
 * @returns Array of harness names
 * @throws Error if invalid harness names are provided
 */
export declare function parseHarnesses(value: string): Harness[];
/**
 * Validate that all harnesses are supported
 * @param harnesses - Array of harnesses to validate
 * @throws Error if any harness is invalid or array is empty
 */
export declare function validateHarnesses(harnesses: Harness[]): void;
export interface MarkdownFrontmatter {
    [key: string]: string;
}
/**
 * Extract YAML frontmatter and body from a markdown string.
 * Returns an empty frontmatter object when no fences are found.
 */
export declare function parseFrontmatter(content: string): {
    frontmatter: MarkdownFrontmatter;
    body: string;
};
/**
 * Escape a string for use inside a TOML basic (double-quoted) string.
 */
export declare function escapeTomlString(str: string): string;
/**
 * Escape a string for use inside a TOML multi-line basic (triple-quoted) string.
 */
export declare function escapeTomlTripleQuotedString(str: string): string;
/**
 * Convert a canonical agent markdown template (with YAML frontmatter
 * containing `name` and `description`) into Codex's TOML agent format.
 */
export declare function convertAgentMdToToml(mdContent: string): string;
export interface AgentFormatInfo {
    format: 'md' | 'toml';
    extension: string;
    directory: string;
}
/**
 * Return the agent file format, extension, and target directory for a harness.
 */
export declare function getAgentFormat(harness: Harness): AgentFormatInfo;
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