/**
 * Secure YAML parsing utility.
 *
 * Provides safe YAML parsing with protection against:
 * - Alias bombs (billion laughs attack) via maxAliasCount
 * - Excessive nesting via depth validation
 * - Circular references
 */
import { type ParseOptions } from 'yaml';
/**
 * Default security limits for YAML parsing.
 */
export declare const YAML_SECURITY_LIMITS: {
    /** Maximum number of aliases to resolve (prevents billion laughs attack) */
    MAX_ALIAS_COUNT: number;
    /** Maximum nesting depth for parsed structures */
    MAX_DEPTH: number;
    /** Maximum size of input in characters */
    MAX_INPUT_SIZE: number;
};
/**
 * Options for secure YAML parsing.
 */
export interface SecureYamlOptions {
    /** Maximum number of aliases to resolve (default: 100) */
    maxAliasCount?: number;
    /** Maximum nesting depth (default: 50) */
    maxDepth?: number;
    /** Maximum input size in characters (default: 10MB) */
    maxInputSize?: number;
    /** Additional yaml parse options */
    parseOptions?: ParseOptions;
}
/**
 * Parse YAML with security protections.
 *
 * @param content - YAML content to parse
 * @param options - Security options
 * @returns Parsed YAML value
 * @throws Error if parsing fails or security limits are exceeded
 *
 * @example
 * ```typescript
 * const data = parseYamlSecure(content);
 * const config = parseYamlSecure(content, { maxDepth: 10 });
 * ```
 */
export declare function parseYamlSecure<T = unknown>(content: string, options?: SecureYamlOptions): T;
/**
 * Parse YAML with strict security settings.
 * Use this for parsing untrusted input.
 *
 * @param content - YAML content to parse
 * @returns Parsed YAML value
 * @throws Error if parsing fails or security limits are exceeded
 */
export declare function parseYamlStrict<T = unknown>(content: string): T;
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