import type { LogRecord, PowerSyncCredentials } from '@powersync/common';
import { SyncStatusJson } from '@powersync/shared-internals';
/**
 * The client side port should provide these methods.
 */
export declare abstract class AbstractSharedSyncClientProvider {
    abstract fetchCredentials(): Promise<PowerSyncCredentials | null>;
    abstract invalidateCredentials(): void;
    abstract uploadCrud(): Promise<void>;
    abstract postCheckpointRequest(clientId: string, requestId: string): Promise<string | null>;
    abstract statusChanged(status: SyncStatusJson): void;
    abstract getDBWorkerPort(): Promise<MessagePort>;
    abstract log(record: LogRecord): void;
}