/**
 * Decorator to log a warning if the method execution time exceeds a specified threshold.
 * It uses high-resolution time in Node.js and performance.now() in browsers.
 * @param threshold - The execution time threshold in milliseconds. Defaults to 100ms.
 * @param performanceHandler - An optional custom performance handler function that takes
 *                             the execution time and method name as parameters.
 * @returns MethodDecorator
 */
export declare function WarnPerformanceThreshold(threshold?: number, performanceHandler?: (executionTime: number, methodName: string) => void): (originalMethod: Function, context: {
    kind: string;
    name: string | symbol;
}) => (this: any, ...args: any[]) => any;