import { DecryptKeystoreArgs } from "./types.js";
/**
 * Thread pool to decrypt keystores
 */
export declare class DecryptKeystoresThreadPool {
    private readonly signal;
    private pool;
    private tasks;
    private terminatePoolHandler;
    constructor(keystoreCount: number, signal: AbortSignal);
    /**
     * Add keystore to the task queue to be decrypted
     */
    queue(args: DecryptKeystoreArgs, onDecrypted: (secretKeyBytes: Uint8Array) => void, onError: (e: Error) => void): void;
    /**
     * Resolves once all queued tasks are completed and terminates worker threads.
     * Errors during executing can be captured in `onError` handler for each task.
     */
    completed(): Promise<void>;
    /**
     * Cancel all pending tasks
     */
    cancel(): void;
}
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