import Emittery from "emittery";
import type { Logger as PinoLogger } from "pino";
import "reflect-metadata";
import type { Logger, QueryRunner } from "typeorm";
export declare const queryRunnerId: (runner?: QueryRunner) => number | "none";
export interface QueryEvent {
    query: string;
    connectionName: string;
    parameters?: any[];
    queryRunner?: QueryRunner;
}
/** Event emitter for accessing a stream of all the queries run by the system. Useful in tests. */
export declare const queries: Emittery<{
    query: QueryEvent;
}>;
/**
 * Wrapper class implementing the TypeORM logger interface backed by a pino logger (which is what we use everywhere else)
 */
export declare class TypeORMPinoLogger implements Logger {
    readonly connectionName: string;
    logger: PinoLogger;
    constructor(connectionName: string, logger: PinoLogger);
    logQuery(query: string, parameters?: any[], queryRunner?: QueryRunner): void;
    logQueryError(error: string, query: string, parameters?: any[], queryRunner?: QueryRunner): void;
    logQuerySlow(time: number, query: string, parameters?: any[], queryRunner?: QueryRunner): void;
    logSchemaBuild(message: string, queryRunner?: QueryRunner): void;
    logMigration(message: string, queryRunner?: QueryRunner): void;
    log(level: "log" | "info" | "warn", message: any, queryRunner?: QueryRunner): void;
}