type AnyFunction = (...args: never[]) => unknown;
interface DebounceOptions {
    delay?: number;
    leading?: boolean;
    trailing?: boolean;
    usePromise?: boolean;
}
export declare function debounce<T extends AnyFunction>(fn: T, options?: DebounceOptions | number): {
    (...args: Parameters<T>): Promise<ReturnType<T>> | void;
    cancel(): void;
    flush(): Promise<ReturnType<T>> | undefined;
} & {
    cancel: () => void;
    flush: () => Promise<ReturnType<T>> | undefined;
};
export {};
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