export interface CodeQualityMetrics {
    complexity: number;
    maintainabilityIndex: number;
    codeDuplicationPercentage: number;
    commentDensity: number;
    functionLength: number;
}
export interface SecurityIssue {
    severity: 'HIGH' | 'MEDIUM' | 'LOW';
    description: string;
    location: string;
}
export declare class CodeNode {
    type: string;
    value: string;
    children: CodeNode[];
    metadata: Record<string, any>;
    id: string;
    codeQualityMetrics?: CodeQualityMetrics;
    securityIssues?: SecurityIssue[];
    generatedCode?: string;
    constructor(type: string, value: string, children?: CodeNode[], metadata?: Record<string, any>);
    toJSON(): any;
    static fromJSON(json: any): CodeNode;
    toString(indent?: string): string;
    traverse(callback: (node: CodeNode) => void): void;
    find(predicate: (node: CodeNode) => boolean): CodeNode | null;
    serialize(): string;
    static deserialize(serialized: string): CodeNode;
}
export declare function findNodeById(root: CodeNode, id: string): CodeNode | null;
export declare function countNodes(root: CodeNode): number;
export declare function getLeafNodes(root: CodeNode): CodeNode[];
export declare function getNodeDepth(root: CodeNode, targetNode: CodeNode): number;
export declare function cloneCodeNode(node: CodeNode): CodeNode;