import { AsyncLocalStorage } from "async_hooks";
import { type Knex } from "knex";
import { type SonamuConfig } from "../api/config";
import { TransactionContext } from "./transaction-context";
export type DBPreset = "w" | "r";
export type SonamuDBConfig = {
    development_master: Knex.Config;
    development_slave: Knex.Config;
    production_master: Knex.Config;
    production_slave: Knex.Config;
    fixture: Knex.Config;
    test: Knex.Config;
};
export declare class DBClass {
    private wdb?;
    private rdb?;
    private workerDBs;
    private currentConfig;
    transactionStorage: AsyncLocalStorage<TransactionContext>;
    runWithTransaction<T>(callback: () => Promise<T>): Promise<T>;
    setConfig(dbConfig: SonamuDBConfig): void;
    private getCurrentConfig;
    getTransactionContext(): TransactionContext;
    getDB(which: DBPreset): Knex;
    /**
     * 병렬 테스트에서 worker별 DB 인스턴스를 반환합니다.
     * VITEST_POOL_ID 환경변수로 worker를 식별하여 해당 DB에 연결합니다.
     */
    private getWorkerDB;
    getDBConfig(which: DBPreset): Knex.Config;
    destroy(): Promise<void>;
    generateDBConfig(config: SonamuConfig["database"]): SonamuDBConfig;
    testTransaction: Knex.Transaction | null;
    createTestTransaction(): Promise<Knex.Transaction>;
    clearTestTransaction(): Promise<void>;
    getTestConnection(): Promise<Knex>;
}
export declare const DB: DBClass;
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