interface PromiseHandlerOptions {
    concurrency?: number;
}
declare class PromiseHandler {
    private queue;
    private running;
    private concurrency;
    constructor(options?: PromiseHandlerOptions);
    clear: () => void;
    add: (task: () => Promise<void>, ref: unknown) => Promise<void>;
    private processQueue;
}
export declare const createPromiseHandler: (options?: PromiseHandlerOptions) => PromiseHandler;
export declare const promiseHandler: PromiseHandler;
export {};
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