import ts from "typescript";
import { AttributeInfo } from "../types/internalTypes";
/**
 * Utility functions for working with JSX elements in SEO analysis
 */
export declare class JsxUtils {
    /**
     * Gets the tag name of a JSX element
     */
    static getTagName(node: ts.JsxElement | ts.JsxSelfClosingElement): string;
    /**
     * Gets the value of a JSX attribute
     */
    static getAttribute(node: ts.JsxElement | ts.JsxSelfClosingElement, attributeName: string): string | null;
    /**
     * Gets all attributes from a JSX element
     */
    static getAllAttributes(node: ts.JsxElement | ts.JsxSelfClosingElement): AttributeInfo[];
    /**
     * Checks if a node is a Link component (Next.js, React Router, etc.)
     */
    static isLinkComponent(node: ts.Node): boolean;
    /**
     * Checks if a node is an anchor tag
     */
    static isAnchorTag(node: ts.Node): boolean;
    /**
     * Extracts link target from Link component or anchor
     */
    static extractLinkTarget(node: ts.Node): string | null;
    /**
     * Checks if a node has accessible text (for SEO and a11y)
     */
    static hasAccessibleText(node: ts.JsxElement | ts.JsxSelfClosingElement): boolean;
    /**
     * Checks if a node is an icon-only button (accessibility issue for SEO)
     */
    static isIconOnlyButton(node: ts.JsxElement | ts.JsxSelfClosingElement): boolean;
    /**
     * Extracts text content from JSX elements
     */
    static extractTextContent(node: ts.Node): string;
    /**
     * Detects Next.js Image component usage and optimization
     */
    static isNextImageComponent(node: ts.Node): boolean;
    /**
     * Checks if image has performance-critical attributes
     */
    static hasPerformanceOptimizedImage(node: ts.JsxElement | ts.JsxSelfClosingElement): {
        isOptimized: boolean;
        issues: string[];
        hasLazyLoading: boolean;
        hasPriority: boolean;
        hasDimensions: boolean;
    };
    /**
     * Detects lazy loading opportunities
     */
    static getLazyLoadingInfo(node: ts.JsxElement | ts.JsxSelfClosingElement): {
        supportsLazyLoading: boolean;
        hasLazyLoading: boolean;
        method: "native" | "next-image" | "none";
        recommendation: string | null;
    };
    /**
     * Detects components that might benefit from lazy loading
     */
    static isHeavyComponent(node: ts.JsxElement | ts.JsxSelfClosingElement): {
        isHeavy: boolean;
        reasons: string[];
        complexity: "low" | "medium" | "high";
    };
    /**
     * Detects performance-impacting event handlers
     */
    static hasPerformanceIssues(node: ts.JsxElement | ts.JsxSelfClosingElement): {
        hasIssues: boolean;
        issues: Array<{
            type: "complex-handlers" | "too-many-handlers" | "inline-functions";
            description: string;
            severity: "low" | "medium" | "high";
        }>;
    };
    /**
     * Detects third-party scripts and their performance impact
     */
    static isThirdPartyScript(node: ts.JsxElement | ts.JsxSelfClosingElement): {
        isThirdParty: boolean;
        service: string | null;
        performanceImpact: "low" | "medium" | "high";
        recommendations: string[];
    };
    /**
     * Detects preloading opportunities
     */
    static shouldBePreloaded(node: ts.JsxElement | ts.JsxSelfClosingElement): {
        shouldPreload: boolean;
        resourceType: "image" | "font" | "script" | "style" | null;
        priority: "high" | "medium" | "low";
        recommendation: string | null;
    };
    /**
     * Analyzes Core Web Vitals impact of an element
     */
    static analyzeCoreWebVitalsImpact(node: ts.JsxElement | ts.JsxSelfClosingElement): {
        lcpImpact: "none" | "low" | "medium" | "high";
        clsImpact: "none" | "low" | "medium" | "high";
        fidImpact: "none" | "low" | "medium" | "high";
        recommendations: string[];
    };
}