/**
 * Type of throttle wrappers.
 * (When invocation gap is less than specific value,
 * the callback won't be invoked
 * and `undefined` will be returned.)
 */
export interface ThrottleWrapper<T extends (...args: any[]) => any> {
    (...args: Parameters<T>): ReturnType<T> | undefined;
    throttleGap: number;
}
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/**
 * Create a throttle wrapper.
 */
export declare const throttle: <T extends (...args: any[]) => any>(gap: number, callback: T) => ThrottleWrapper<T>;
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/**
 * Type of debounce wrappers.
 * (Invokes the callback after specific timeout.
 * Duplicate invocation resets the timer.)
 */
export interface DebounceWrapper<T extends (...args: any[]) => any> {
    (...args: Parameters<T>): void;
    debounceTimeout: number;
}
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/**
 * Create a debounce wrapper.
 */
export declare const debounce: <T extends (...args: any[]) => any>(timeout: number, callback: T) => DebounceWrapper<T>;
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/**
 * Type of lock wrappers.
 * (If `disabled` is `false`(default state), set it to `true`
 * and invoke the callback; otherwise, return `undefined`.
 * You will need to manually reset `disabled` to `false`,
 * to make the callback available again.)
 */
export interface LockWrapper<T extends (...args: any[]) => any> {
    (...args: Parameters<T>): ReturnType<T> | undefined;
    disabled: boolean;
}
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/**
 * Create a lock wrapper.
 */
export declare const lock: <T extends (...args: any[]) => any>(callback: T) => LockWrapper<T>;