import type { Redis } from 'ioredis';
import { type ChangeStreamOptions, type ScanOptions } from 'mongochangestream';
import * as mongoChangeStream from 'mongochangestream';
import type { Collection } from 'mongodb';
import type { QueueOptions } from 'prom-utils';
import type { Crate, Response } from './crate.js';
import type { ConvertOptions, OptimizationOptions, SyncOptions } from './types.js';
export declare const initSync: (redis: Redis, collection: Collection, crate: Crate, options?: SyncOptions & mongoChangeStream.SyncOptions) => {
    /**
     * Process MongoDB change stream for the given collection.
     */
    processChangeStream: (options?: QueueOptions & ChangeStreamOptions & OptimizationOptions) => Promise<{
        start: () => Promise<void>;
        stop: () => Promise<void>;
        restart: () => Promise<void>;
        state: Pick<{
            get: () => mongoChangeStream.State;
            change: (newState: mongoChangeStream.State) => void;
            waitForChange: (...newStates: mongoChangeStream.State[]) => Promise<void>;
            is: (...states: mongoChangeStream.State[]) => boolean;
            canChange: (newState: mongoChangeStream.State) => boolean;
            maybeChange: (newState: mongoChangeStream.State) => boolean;
            getElapsedTime: () => number;
        }, "get" | "is">;
    }>;
    /**
     * Run initial collection scan. `options.batchSize` defaults to 500.
     * Sorting defaults to `_id`.
     */
    runInitialScan: (options?: QueueOptions & ScanOptions) => Promise<{
        start: () => Promise<void>;
        stop: () => Promise<void>;
        restart: () => Promise<void>;
        state: Pick<{
            get: () => mongoChangeStream.State;
            change: (newState: mongoChangeStream.State) => void;
            waitForChange: (...newStates: mongoChangeStream.State[]) => Promise<void>;
            is: (...states: mongoChangeStream.State[]) => boolean;
            canChange: (newState: mongoChangeStream.State) => boolean;
            maybeChange: (newState: mongoChangeStream.State) => boolean;
            getElapsedTime: () => number;
        }, "get" | "is">;
    }>;
    /**
     * Convert the given JSON schema to CrateDB table DDL.
     */
    createTableFromSchema: (jsonSchema: object, options?: ConvertOptions) => Promise<Response>;
    schemaName: string;
    tableName: string;
    qualifiedName: string;
    emitter: import("eventemitter3").EventEmitter<"process" | mongoChangeStream.Events, any>;
    reset: () => Promise<void>;
    getCollectionSchema: (db: import("mongodb").Db) => Promise<mongoChangeStream.JSONSchema>;
    detectSchemaChange: (db: import("mongodb").Db, options?: mongoChangeStream.ChangeOptions) => Promise<{
        start: () => void;
        stop: () => void;
    }>;
    detectResync: (resyncCheckInterval?: number) => {
        start: () => void;
        stop: () => void;
    };
    keys: {
        scanCompletedKey: string;
        lastScanIdKey: string;
        changeStreamTokenKey: string;
        schemaKey: string;
        lastChangeProcessedAtKey: string;
        lastScanProcessedAtKey: string;
        resyncKey: string;
    };
    pausable: {
        pause: () => void;
        resume: () => void;
        maybeBlock: () => Promise<void> | undefined;
        readonly isPaused: boolean;
    };
};