/**
 * No-op function
 */
export declare const noop: () => void;
/**
 * Promise wrapped setTimeout
 *
 * @param {number} [delay=0] Time to wait (in milliseconds)
 * @returns {Promise}
 */
export declare function wait(delay?: number): Promise<void>;
/**
 * Check if a value is defined
 *
 * @template {unknown} [T=unknown]
 * @param {T} value Value to check
 * @returns {boolean} `true` if the given value is defined, `false` otherwise
 */
export declare function isDefined<T = unknown>(value: T): value is Exclude<T, undefined | null>;
/**
 * Create a debounced function that delays the execution of a given callback until a specified delay time has passed since the last call
 *
 * @template {Function} T
 * @param {T} callback Function to debounce
 * @param {number} delay Delay (in milliseconds)
 * @returns {T} Debounced function
 */
export declare function debounce<T extends (...args: any[]) => void>(callback: T, delay: number): (...args: Parameters<T>) => void;
/**
 * Create a throttled function that limits the execution of a given callback to once every specified limit time
 *
 * @template {Function} T
 * @param {T} callback Function to throttle
 * @param {number} limit Minimum interval between two calls (in milliseconds)
 * @returns {T} Throttled function
 */
export declare function throttle<T extends (...args: any[]) => void>(callback: T, limit: number): (...args: Parameters<T>) => void;
/**
 * Polyfill for `now()` functions
 */
export declare let now: () => number;