import type { ProcessorConfig, UserFunction, QueryKey, ConnectReason, SQLocalDriver } from './types.js';
import type { BatchMessage, ConfigMessage, DeleteMessage, DestroyMessage, ExportMessage, FunctionMessage, GetInfoMessage, ImportMessage, InputMessage, OutputMessage, QueryMessage, TransactionMessage, WorkerProxy } from './messages.js';
import { type Mutex } from './lib/create-mutex.js';
import { type DebouncedFunction } from './lib/debounce.js';
/**
 * The `SQLocal` client exchanges messages with a paired instance
 * of `SQLocalProcessor` to interact with databases.
 * @see {@link https://sqlocal.dev/guide/setup}
 */
export declare class SQLocalProcessor {
    protected driver: SQLocalDriver;
    protected config: ProcessorConfig;
    protected userFunctions: Map<string, UserFunction>;
    protected initMutex: Mutex;
    protected transactionMutex: Mutex;
    protected transactionKey: QueryKey | null;
    protected proxy: WorkerProxy;
    protected dirtyTables: Set<string>;
    protected effectsChannel?: BroadcastChannel;
    protected reinitChannel?: BroadcastChannel;
    /**
     * After an `InputMessage` has been processed, the resulting
     * `OutputMessage` is emitted to the function passed to `onmessage`.
     */
    onmessage?: (message: OutputMessage, transfer: Transferable[]) => void;
    constructor(driver: SQLocalDriver);
    protected init: (reason: ConnectReason) => Promise<void>;
    /**
     * To interact with a database, an `InputMessage` is passed to
     * `postMessage` for processing.
     */
    postMessage: (event: InputMessage | MessageEvent<InputMessage>, _transfer?: Transferable) => Promise<void>;
    protected emitMessage: (message: OutputMessage, transfer?: Transferable[]) => void;
    protected emitEffects: () => void;
    protected emitEffectsDebounced: DebouncedFunction<() => void>;
    protected editConfig: (message: ConfigMessage) => void;
    protected exec: (message: QueryMessage | BatchMessage | TransactionMessage) => Promise<void>;
    protected execInitStatements: () => Promise<void>;
    protected getDatabaseInfo: (message: GetInfoMessage) => Promise<void>;
    protected createUserFunction: (message: FunctionMessage) => Promise<void>;
    protected initUserFunction: (fn: UserFunction) => Promise<void>;
    protected importDb: (message: ImportMessage) => Promise<void>;
    protected exportDb: (message: ExportMessage) => Promise<void>;
    protected deleteDb: (message: DeleteMessage) => Promise<void>;
    protected destroy: (message?: DestroyMessage) => Promise<void>;
}