@feedal/embed/dist/performance.d.ts

Feedal embed script to load feedback forms via JS or NPM

export interface PerformanceOptions {
    lazyLoad?: boolean;
    preloadDelay?: number;
    intersectionThreshold?: number;
    performanceMonitoring?: boolean;
    criticalPath?: boolean;
}
export declare class PerformanceManager {
    private options;
    private intersectionObserver?;
    private performanceObserver?;
    private metrics;
    constructor(options?: PerformanceOptions);
    setupLazyLoading(element: HTMLElement, callback: () => void): void;
    preloadResources(host: string, formId: string): void;
    createOptimizedScrollHandler(callback: () => void): () => void;
    addPassiveEventListener(element: HTMLElement | Window | Document, event: string, handler: EventListener): void;
    createOptimizedResizeHandler(callback: () => void, delay?: number): () => void;
    private initPerformanceMonitoring;
    markPerformance(name: string): void;
    measurePerformance(name: string, startMark: string, endMark?: string): number;
    getMetrics(): Record<string, number>;
    optimizeIframeLoading(iframe: HTMLIFrameElement): void;
    trackMemoryUsage(): void;
    destroy(): void;
}
export declare function addResourceHints(host: string): void;
export declare function injectCriticalCSS(css: string): void;