/**
 * Copyright Zendesk, Inc.
 *
 * Use of this source code is governed under the Apache License, Version 2.0
 * found at http://www.apache.org/licenses/LICENSE-2.0.
 */
export declare const DebounceReason: unique symbol;
export declare const TimeoutReason: unique symbol;
export type FlushReason = typeof DebounceReason | typeof TimeoutReason | string;
type FnToBeDebounced<Args extends readonly unknown[]> = (...args: [...args: Args, flushReason: FlushReason]) => boolean | undefined | void;
export interface DebounceOptionsRef<Args extends readonly unknown[]> {
    fn: FnToBeDebounced<Args>;
    debounceMs: number;
    timeoutMs?: number;
}
export type DebouncedFn<Args extends readonly unknown[]> = ((...args: Args) => void) & {
    cancel: () => void;
    reset: () => Args | undefined;
    flush: (reason?: FlushReason) => boolean;
    getIsScheduled: () => boolean;
};
/**
 * A simple debounce function that is easier to test against than the lodash one.
 * In addition it offers a way to check whether the last call was due to a timeout or not,
 * and a way to manually clear that timeout state.
 * Options may change even after the debounce was created by the means of a ref.
 */
export declare const debounce: <Args extends readonly unknown[]>(optionsRef: DebounceOptionsRef<Args>) => DebouncedFn<Args>;
export {};