/**
 * Secure YAML Parser for DollhouseMCP
 *
 * Provides safe YAML parsing that prevents deserialization attacks
 * by using a restricted schema and pre-validation.
 *
 * Security: SEC-003 - YAML parsing vulnerability protection
 */
import matter from 'gray-matter';
export interface SecureParseOptions {
    maxYamlSize?: number;
    maxContentSize?: number;
    allowedKeys?: string[];
    validateContent?: boolean;
}
export interface ParsedContent {
    data: Record<string, any>;
    content: string;
    excerpt?: string;
}
export declare class SecureYamlParser {
    private static readonly DEFAULT_OPTIONS;
    private static readonly SAFE_SCHEMA;
    private static readonly FIELD_VALIDATORS;
    /**
     * Securely parse content with YAML frontmatter
     */
    static parse(input: string, options?: SecureParseOptions): ParsedContent;
    /**
     * Create a secure gray-matter compatible parser
     */
    static createSecureMatterParser(): {
        parse: (input: string) => {
            data: Record<string, any>;
            content: string;
            excerpt: string | undefined;
            orig: string;
        };
        stringify: (content: string, data: any) => string;
    };
    /**
     * Safe wrapper for gray-matter with security validations
     */
    static safeMatter(input: string, options?: matter.GrayMatterOption<string, any>): matter.GrayMatterFile<string>;
}
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