/**
 * Check if a string looks like a file path
 */
export declare function isFilePath(value: string): boolean;
/**
 * Load a prompt file if it's a file path, otherwise return the string as-is
 * @param systemMessage - Either a file path or literal string content
 * @param basePath - Base path to resolve relative paths against (usually config file directory)
 * @param allowAbsolutePaths - Whether to allow absolute paths (default: false for security)
 * @returns The loaded markdown content or the original string
 */
export declare function loadPromptFile(systemMessage: string, basePath?: string, allowAbsolutePaths?: boolean): string;
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