/**
 * Returns a function, that, after it is invoked, will trigger the `callback` function,
 * after the `delay` amount of milliseconds has passed. During that time, all subsequent calls are
 * ignored. All arguments are passed to the `callback` function.
 * @param callback
 * @param delay - Delay in milliseconds.
 * @returns {Function}
 */
export declare function throttle<T extends (...args: any[]) => void>(callback: T, delay: number): T;
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