import PQueue from 'p-queue';
import { Database } from './db/index.js';
export declare class BackgroundQueue {
    db: Database;
    queue: InstanceType<typeof PQueue>;
    destroyed: boolean;
    constructor(db: Database);
    add(task: Task): void;
    processAll(): Promise<void>;
    destroy(): Promise<void>;
}
type Task = (db: Database) => Promise<void>;
export {};
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