import { DBAdapter, DBAdapterListener, DBLockOptions, LockContext } from '@powersync/common';
import { SharedConnectionWorker, WebDBAdapterConfiguration } from './WebDBAdapter.js';
import { DatabaseClient } from './wa-sqlite/DatabaseClient.js';
/**
 * A connection pool implementation delegating to another pool opened asynchronnously.
 */
export declare class AsyncDbAdapter extends DBAdapter {
    readonly name: string;
    protected readonly state: Promise<PoolState>;
    protected resolvedWriter?: DatabaseClient;
    private readonly pendingListeners;
    constructor(inner: Promise<PoolConnection>, name: string);
    init(): Promise<void>;
    close(): Promise<void>;
    readLock<T>(fn: (tx: LockContext) => Promise<T>, options?: DBLockOptions): Promise<T>;
    writeLock<T>(fn: (tx: LockContext) => Promise<T>, options?: DBLockOptions): Promise<T>;
    refreshSchema(): Promise<void>;
    registerListener(listener: Partial<DBAdapterListener>): () => void;
    shareConnection(): Promise<SharedConnectionWorker>;
    getConfiguration(): WebDBAdapterConfiguration;
}
export interface PoolConnection {
    writer: DatabaseClient;
    additionalReaders: DatabaseClient[];
}
interface PoolState {
    writer: DatabaseClient;
    withConnection<T>(allowReadOnly: boolean, fn: (tx: LockContext) => Promise<T>, options?: DBLockOptions): Promise<T>;
    close(): Promise<void>;
    refreshSchema(): Promise<void>;
}
export {};